Merge branch 'issue_5_more_consumable_material' into 'development'

Issue 5 more consumable material



See merge request !17

app/rollerverbrauch/__init__.py

@@ -9,6 +9,7 @@ from flask.ext.security import Security, SQLAlchemyUserDatastore, \
 from flask.ext.security import user_registered
 from flask_security.core import current_user
 from flask_sqlalchemy import SQLAlchemy
+from sqlalchemy.exc import IntegrityError
 from flask.ext.security.forms import LoginForm
 
 app = Flask(__name__)
@@ -31,13 +32,18 @@ from rollerverbrauch.forms import \
     SelectVehicleForm, \
     DeleteAccountForm, \
     DeletePitStopForm, \
-    EditPitstopForm
+    EditPitstopForm, \
+    CreateConsumableForm, \
+    EditConsumableForm, \
+    DeletConsumableForm, \
+    SelectConsumableForm
 
 from rollerverbrauch.entities import \
     User, \
     Role, \
     Pitstop, \
-    Vehicle
+    Vehicle, \
+    Consumable
 
 # required to activate the filters
 import rollerverbrauch.filters
@@ -100,26 +106,47 @@ def index():
         return render_template('index.html', login_user_form=LoginForm(), data=data)
 
 
-@app.route('/account/edit_vehicle/<int:vid>', methods=['GET', 'POST'])
+@app.route('/account/vehicle/edit/<int:vid>', methods=['GET', 'POST'])
 @login_required
 def edit_vehicle(vid):
     vehicle = Vehicle.query.filter(Vehicle.id == vid).first()
+
+    # prevent edit of foreign vehicles
+    if vehicle not in current_user.vehicles:
+        return redirect(url_for('get_account_page'))
+
     form = EditVehicleForm()
+    form.consumables.choices = [(g.id, g.name) for g in Consumable.query.all()]
+
+    if not form.consumables.data:
+        form.consumables.default = [g.id for g in vehicle.consumables]
+
+    if form.name.data is not None:
+        form.name.default = form.name.data
 
     if form.validate_on_submit():
-        if not tools.check_vehicle_name_is_unique(current_user, form.name):
-            return render_template('editVehicleForm.html', form=form)
         vehicle.name = form.name.data
+        # we cannot delete consumables where there are pitstops for => report error
+        vehicle.consumables = []
+        for consumable_id in  form.consumables.data:
+            consumable = Consumable.query.get(consumable_id)
+            if consumable is not None:
+                vehicle.consumables.append(consumable)
+        try:
             db.session.commit()
             tools.db_log_update(vehicle)
+        except IntegrityError:
+            db.session.rollback()
+            form.name.errors.append('"%s" is not unique.' % (form.name.data))
+            return render_template('editVehicleForm.html', form=form)
         return redirect(url_for('get_account_page'))
 
     form.name.default = vehicle.name
     form.process()
-    return render_template('editVehicleForm.html', form=form)
+    return render_template('editVehicleForm.html', form=form, vehicle=vehicle)
 
 
-@app.route('/account/delete_vehicle/<int:vid>', methods=['GET', 'POST'])
+@app.route('/account/vehicle/delete/<int:vid>', methods=['GET', 'POST'])
 @login_required
 def delete_vehicle(vid):
     vehicle = Vehicle.query.filter(Vehicle.id == vid).first()
@@ -128,6 +155,9 @@ def delete_vehicle(vid):
     if vehicle not in current_user.vehicles:
         return redirect(url_for('get_account_page'))
 
+    if len(current_user.vehicles) == 1:
+        return redirect(url_for('get_account_page'))
+
     form = DeleteVehicleForm()
 
     if form.validate_on_submit():
@@ -139,75 +169,124 @@ def delete_vehicle(vid):
     return render_template('deleteVehicleForm.html', form=form, vehicle=vehicle)
 
 
-@app.route('/account/create_vehicle', methods=['GET', 'POST'])
+@app.route('/account/vehicle/create', methods=['GET', 'POST'])
 @login_required
 def create_vehicle():
     form = EditVehicleForm()
+    form.consumables.choices = [(g.id, g.name) for g in Consumable.query.all()]
+
+    if form.name.data is not None:
+        form.name.default = form.name.data
+
+    if form.consumables.data:
+        form.consumables.default = form.consumables.data
 
     if form.validate_on_submit():
-        vehicle_name = form.name.data
+        if len(form.consumables.data) == 0:
-        if not tools.check_vehicle_name_is_unique(current_user, form.name):
+            form.consumables.errors.append('At least one consumable must be selected.')
             return render_template('createVehicleForm.html', form=form)
+
+        vehicle_name = form.name.data
         new_vehicle = Vehicle(vehicle_name)
+        for consumable_id in form.consumables.data:
+            consumable = Consumable.query.get(consumable_id)
+            if consumable is not None:
+                new_vehicle.consumables.append(consumable)
         db.session.add(new_vehicle)
         current_user.vehicles.append(new_vehicle)
+        try:
             db.session.commit()
             tools.db_log_add(new_vehicle)
+        except IntegrityError:
+            db.session.rollback()
+            form.name.errors.append('"%s" is not unique.' % (form.name.data))
+            return render_template('createVehicleForm.html', form=form)
         return redirect(url_for('get_account_page'))
 
     return render_template('createVehicleForm.html', form=form)
 
 
-@app.route('/pitstops/select_vehicle', methods=['GET', 'POST'])
+@app.route('/pitstops/vehicle/select', methods=['GET', 'POST'])
 @login_required
 def select_vehicle_for_new_pitstop():
+    if len(current_user.vehicles) == 1:
+        return redirect(url_for('select_consumable_for_new_pitstop', vid=current_user.vehicles[0].id))
+
     form = SelectVehicleForm()
     form.vehicle.choices = [(g.id, g.name) for g in current_user.vehicles]
 
     if form.validate_on_submit():
-        vehicle = Vehicle.query.filter(Vehicle.id == form.vehicle.data).first()
+        return redirect(url_for('select_consumable_for_new_pitstop', vid=form.vehicle.data))
-        if vehicle not in current_user.vehicles:
-            return render_template('selectVehice.html', form=form)
 
-        return redirect(url_for('create_pit_stop_form', vid=form.vehicle.data))
+    return render_template('selectVehicle.html', form=form)
-
-    return render_template('selectVehice.html', form=form)
 
 
-@app.route('/pitstops/create/<int:vid>', methods=['GET', 'POST'])
+@app.route('/pitstops/vehicle/<int:vid>/consumable/select', methods=['GET', 'POST'])
 @login_required
-def create_pit_stop_form(vid):
+def select_consumable_for_new_pitstop(vid):
-    vehicle = Vehicle.query.filter(Vehicle.id == vid).first()
+    vehicle = Vehicle.query.get(vid)
-    if vehicle not in current_user.vehicles:
+    if vehicle is None or vehicle not in current_user.vehicles:
         return redirect(url_for('select_vehicle_for_new_pitstop'))
 
-    if len(vehicle.pitstops) > 0:
+    if len(vehicle.consumables) == 1:
-        last_pitstop = vehicle.pitstops[-1]
+        return redirect(url_for('create_pit_stop_form', vid=vid, cid=vehicle.consumables[0].id))
-    else:
-        last_pitstop = Pitstop(0, 0, date(1970, 1, 1), 0)
 
-    form = CreatePitstopForm()
+    form = SelectConsumableForm()
-    form.set_pitstop(last_pitstop)
+    form.consumable.choices = [(g.id, g.name) for g in vehicle.consumables]
 
     if form.validate_on_submit():
-        new_stop = Pitstop(form.odometer.data, form.litres.data, form.date.data, form.costs.data)
+        return redirect(url_for('create_pit_stop_form', vid=vid, cid=form.consumable.data))
+
+    return render_template('selectConsumableForVehicle.html', vehicle=vehicle, form=form)
+
+
+@app.route('/pitstops/vehicle/<int:vid>/consumable/<int:cid>/create', methods=['GET', 'POST'])
+@login_required
+def create_pit_stop_form(vid, cid):
+    vehicle = Vehicle.query.get(vid)
+    if vehicle is None or vehicle not in current_user.vehicles:
+        return redirect(url_for('select_vehicle_for_new_pitstop'))
+
+    consumable = Consumable.query.get(cid)
+    if consumable not in vehicle.consumables:
+        return redirect(url_for('select_consumable_for_new_pitstop', vid=vid))
+
+    form = CreatePitstopForm()
+
+    # the last pitstop is required to be able to check the monotonicy of date and odometer
+    last_pitstop = tools.get_latest_pitstop_for_vehicle(vid)
+    last_pitstop_consumable = tools.get_latest_pitstop_for_vehicle_and_consumable(vid, cid)
+
+    # we can enter the same odometer if the pitstops are not equal
+    form.same_odometer_allowed = (last_pitstop != last_pitstop_consumable)
+
+    # set the lower limits for odometer andd date and the values for amount and costs of the last stop
+    form.set_pitstop(tools.compute_lower_limits_for_new_pitstop(last_pitstop, last_pitstop_consumable, cid))
+
+    # set the label of the litres field to make the user comfortable
+    form.set_consumable(consumable)
+
+    # preinitialize the defaults with potentially existing values from a try before
+    form.preinit_with_data()
+
+    #
+    #   Validate should accept same odometer on different consumables
+    #
+    if form.validate_on_submit():
+        new_stop = Pitstop(form.odometer.data, form.litres.data, form.date.data, form.costs.data, cid)
         db.session.add(new_stop)
         vehicle.pitstops.append(new_stop)
+        try:
             db.session.commit()
             tools.db_log_add(new_stop)
+        except IntegrityError:
+            db.session.rollback()
+            form.odometer.errors.append('Pitstop already present for %s at odometer %s km!' % (consumable.name, form.odometer.data))
+            return render_template('createPitStopForm.html', form=form, vehicle=vehicle, messages=form.get_hint_messages())
         return redirect(url_for('get_pit_stops', _anchor= 'v' + str(vehicle.id)))
 
-    form.odometer.default = last_pitstop.odometer
-    form.litres.default = last_pitstop.litres
-    form.date.default = date.today()
-    form.costs.default = last_pitstop.costs
     form.process()
-    messages = {
+    return render_template('createPitStopForm.html', form=form, vehicle=vehicle, messages=form.get_hint_messages())
-        'date': 'Date must be between %s and %s (including).' % (str(last_pitstop.date), str(date.today())),
-        'odometer': 'Odometer must be greater than %s km.' % (str(last_pitstop.odometer)),
-        'costs': 'Costs must be higher than 0.01 €.'
-    }
-    return render_template('newPitStopForm.html', form=form, vehicle=vehicle, messages = messages)
 
 
 @app.route('/pitstops/delete/<int:pid>', methods=['GET', 'POST'])
@@ -233,9 +312,10 @@ def delete_pit_stop_form(pid):
 @app.route('/pitstops/edit/<int:pid>', methods=['GET', 'POST'])
 @login_required
 def edit_pit_stop_form(pid):
-    edit_pitstop = Pitstop.query.filter(Pitstop.id == pid).first()
+    edit_pitstop = Pitstop.query.get(pid).first()
     if edit_pitstop is None:
         return redirect(url_for('get_pit_stops'))
+
     vehicle = Vehicle.query.filter(Vehicle.id == edit_pitstop.vehicle_id).first()
     if vehicle not in current_user.vehicles:
         return redirect(url_for('get_pit_stops'))
@@ -244,7 +324,7 @@ def edit_pit_stop_form(pid):
     if last_pitstop_pos > 0:
         last_pitstop = vehicle.pitstops[last_pitstop_pos]
     else:
-        last_pitstop = Pitstop(0, 0, date(1970, 1, 1))
+        last_pitstop = Pitstop(0, 0, date(1970, 1, 1), 0, 0)
 
     form = EditPitstopForm()
     form.set_pitstop(last_pitstop)
@@ -287,8 +367,88 @@ def get_manual():
 @app.route('/admin', methods=['GET'])
 @roles_required('admin')
 def get_admin_page():
-    g.data['users'] = User.query.all()
+    users = User.query.all()
-    return render_template('admin.html', data=g.data)
+    consumables = Consumable.query.all()
+    for consumable in consumables:
+        consumable.in_use = len(consumable.vehicles) > 0
+    return render_template('admin.html', users=users, consumables=consumables)
+
+
+@app.route('/admin/consumable/create', methods=['GET', 'POST'])
+@login_required
+def create_consumable():
+    form = CreateConsumableForm()
+
+    # preinitialize the defaults with potentially existing values from a try before
+    if form.name.data is not None:
+        form.name.default = form.name.data
+    if form.unit.data is not None:
+        form.unit.default = form.unit.data
+
+    if form.validate_on_submit():
+        new_consumable = Consumable(form.name.data, form.unit.data)
+        db.session.add(new_consumable)
+        try:
+            db.session.commit()
+            tools.db_log_add(new_consumable)
+        except IntegrityError:
+            db.session.rollback()
+            form.name.errors.append('"%s" is not unique.' % (form.name.data))
+            return render_template('createConsumableForm.html', form=form)
+        return redirect(url_for('get_admin_page'))
+
+    return render_template('createConsumableForm.html', form=form)
+
+
+@app.route('/admin/consumable/delete/<int:cid>', methods=['GET', 'POST'])
+@login_required
+def delete_consumable(cid):
+    consumable = Consumable.query.filter(Consumable.id == cid).first()
+    if consumable is None:
+        return redirect(url_for('get_admin_page'))
+
+    form = DeletConsumableForm()
+
+    if form.validate_on_submit():
+        db.session.delete(consumable)
+        db.session.commit()
+        tools.db_log_delete(consumable)
+        return redirect(url_for('get_admin_page'))
+
+    return render_template('deleteConsumableForm.html', form=form, consumable=consumable)
+
+
+@app.route('/admin/consumable/edit/<int:cid>', methods=['GET', 'POST'])
+@login_required
+def edit_consumable(cid):
+    consumable = Consumable.query.filter(Consumable.id == cid).first()
+    if consumable is None:
+        return redirect(url_for('get_admin_page'))
+
+    form = EditConsumableForm()
+
+    form.name.default = consumable.name
+    form.unit.default = consumable.unit
+
+    # preinitialize the defaults with potentially existing values from a try before
+    if form.name.data is not None:
+        form.name.default = form.name.data
+    if form.unit.data is not None:
+        form.unit.default = form.unit.data
+
+    if form.validate_on_submit():
+        consumable.name = form.name.data
+        consumable.unit = form.unit.data
+        try:
+            db.session.commit()
+            tools.db_log_update(consumable)
+        except IntegrityError:
+            db.session.rollback()
+            form.name.errors.append('"%s" is not unique.' % (form.name.data))
+            return render_template('editConsumableForm.html', form=form)
+        return redirect(url_for('get_admin_page'))
+
+    return render_template('editConsumableForm.html', form=form)
 
 
 @app.route('/account', methods=['GET'])

app/rollerverbrauch/entities.py

@@ -5,8 +5,15 @@ roles_users = db.Table('roles_users',
                        db.Column('user_id', db.Integer(), db.ForeignKey('user.id')),
                        db.Column('role_id', db.Integer(), db.ForeignKey('role.id')))
 
+vehicles_consumables = db.Table('vehicles_consumables',
+                                db.Column('vehicle_id', db.Integer(), db.ForeignKey('vehicle.id')),
+                                db.Column('consumable_id', db.Integer(), db.ForeignKey('consumable.id')))
+
 
 class Role(db.Model, RoleMixin):
+    """
+    Entity to handle different roles for users: Typically user and admin exist
+    """
     id = db.Column(db.Integer(), primary_key=True)
     name = db.Column(db.String(80), unique=True)
     description = db.Column(db.String(255))
@@ -19,11 +26,15 @@ class Role(db.Model, RoleMixin):
 
 
 class User(db.Model, UserMixin):
+    """
+    Entity to represent a user including login data and links to roles and vehicles.
+    """
     id = db.Column(db.Integer, primary_key=True)
     email = db.Column(db.String(255), unique=True)
     password = db.Column(db.String(255))
     active = db.Column(db.Boolean())
     confirmed_at = db.Column(db.DateTime())
+
     vehicles = db.relationship(
         'Vehicle'
     )
@@ -38,13 +49,28 @@ class User(db.Model, UserMixin):
 
 
 class Vehicle(db.Model):
+    """
+    Entity to represent a vehicle.
+    Attributes:
+     * name of the vehilce
+     * the id of the owner
+     * list of pitstops
+     * list of possible consumables
+    """
     id = db.Column(db.Integer, primary_key=True)
     owner_id = db.Column(db.Integer, db.ForeignKey('user.id'))
     name = db.Column(db.String(255))
     pitstops = db.relationship(
         'Pitstop'
     )
-    __table_args__ = (db.UniqueConstraint('owner_id', 'name', name='_owner_name_uniq'),)
+    consumables = db.relationship(
+        'Consumable',
+        secondary=vehicles_consumables
+    )
+    # allow vehicle names to be duplicated between different owners but must still be uniq for each owner
+    __table_args__ = (db.UniqueConstraint('owner_id',
+                                          'name',
+                                          name='_owner_name_uniq'),)
 
     def __init__(self, name):
         self.name = name
@@ -54,18 +80,63 @@ class Vehicle(db.Model):
 
 
 class Pitstop(db.Model):
+    """
+    Entity to represent a pitstop for a single consumable.
+    Attributes:
+     * the date of the pitstop
+     * the odometer of the pitstop
+     * the id of the fuelled consumable
+     * amount of consumable used
+     * the costs of the consumable
+     * the id of the vehicle that was refuelled
+    """
     id = db.Column(db.Integer, primary_key=True)
     date = db.Column(db.Date)
     odometer = db.Column(db.Integer)
-    litres = db.Column(db.Numeric(5, 2))
+    consumable_id = db.Column(db.Integer, db.ForeignKey('consumable.id'))
+    amount = db.Column(db.Numeric(5, 2))
     costs = db.Column(db.Numeric(5, 2), default=0)
     vehicle_id = db.Column(db.Integer, db.ForeignKey('vehicle.id'))
+    # short cut to access the fuelled consumable of the pitstop
+    consumable = db.relationship('Consumable')
+    # this uniqueness constraint makes sure that for each consumable and each vehicle only one pitstop exists at the
+    # same odometer
+    __table_args__ = (db.UniqueConstraint('odometer',
+                                          'consumable_id',
+                                          'vehicle_id',
+                                          name='_odometer_consumable_vehicle_uniq'),)
 
-    def __init__(self, odometer, litres, date, costs):
+    def __init__(self, odometer, amount, date, costs, consumable_id):
         self.odometer = odometer
-        self.litres = litres
+        self.amount = amount
         self.date = date
         self.costs = costs
+        self.consumable_id = consumable_id
 
     def __repr__(self):
-        return '<Pitstop odometer="%r" litres="%r" date="%r" vehicle_id="%r">' % (self.odometer, self.litres, self.date, self.vehicle_id)
+        return '<Pitstop odometer="%r" amount="%r" date="%r" vehicle_id="%r" consumable_id="%r">' % \
+               (self.odometer, self.amount, self.date, self.vehicle_id, self.consumable_id)
+
+
+class Consumable(db.Model):
+    """
+    Entity to represent a material that be consumed by a vehilce.
+    Attributes:
+     * name (must be globally unique)
+     * unit
+    """
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(255), unique=True)
+    unit = db.Column(db.String(255))
+
+    vehicles = db.relationship(
+        'Vehicle',
+        secondary=vehicles_consumables
+    )
+
+    def __init__(self, name, unit):
+        self.name = name
+        self.unit = unit
+
+    def __repr__(self):
+        return '<Consumable name="%s" unit="%s" />' % (self.name, self.unit)

app/rollerverbrauch/forms.py

@@ -1,10 +1,17 @@
 from flask_wtf import Form
-from wtforms import DateField, IntegerField, DecimalField, StringField, SelectField, SubmitField
+from wtforms import DateField, IntegerField, DecimalField, StringField, SelectField, SubmitField, SelectMultipleField, BooleanField
 from wtforms.validators import ValidationError, Length
 from datetime import date
 
 
 def date_check(form, field):
+    """
+    Checks that the date of the pitstop is not before the date of the latest pitstop and not after today.
+
+    :param form: the form where the field is in
+    :param field: the field to check
+    :return: Nothing or a ValidationError if the limits are not kept
+    """
     if field.data < form.last_pitstop.date:
         raise ValidationError('The new date must not be before %s' % form.last_pitstop.date)
     if field.data > date.today():
@@ -12,7 +19,15 @@ def date_check(form, field):
 
 
 def odometer_check(form, field):
-    if field.data <= form.last_pitstop.odometer:
+    """
+
+    :param form:
+    :param field:
+    :return:
+    """
+    if not form.same_odometer_allowed and field.data <= form.last_pitstop.odometer:
+        raise ValidationError('The new odometer value must be higher than %i km' % form.last_pitstop.odometer)
+    if form.same_odometer_allowed and field.data < form.last_pitstop.odometer:
         raise ValidationError('The new odometer value must be higher than %i km' % form.last_pitstop.odometer)
 
 
@@ -27,15 +42,27 @@ def costs_check(form, field):
 
 
 def edit_costs_check(form, field):
+    """
+    Costs must be given, if a default value was given to the form field.
+    :param form:
+    :param field:
+    :return:
+    """
     costs_check_required = (form.costs.default is not None and form.costs.default > 0)
     if costs_check_required and field.data is not None and field.data <= 0:
         raise ValidationError('Costs must be above 0.01 €.')
 
+
 class SelectVehicleForm(Form):
     vehicle = SelectField('Vehicle', coerce=int)
     submit = SubmitField(label='Do it!')
 
 
+class SelectConsumableForm(Form):
+    consumable = SelectField('Consumable', coerce=int)
+    submit = SubmitField(label='Do it!')
+
+
 class CreatePitstopForm(Form):
     date = DateField('Date of Pitstop', validators=[date_check])
     odometer = IntegerField('Odometer (km)', validators=[odometer_check])
@@ -43,13 +70,48 @@ class CreatePitstopForm(Form):
     costs = DecimalField('Costs (€, overall)', places=2, validators=[costs_check])
     submit = SubmitField(label='Do it!')
     last_pitstop = None
+    same_odometer_allowed = True
 
     def set_pitstop(self, last_pitstop):
         self.last_pitstop = last_pitstop
 
+    def set_consumable(self, consumable):
+        self.litres.label = '%s (%s)' % (consumable.name, consumable.unit)
+
+    def preinit_with_data(self):
+        if self.date.data:
+            self.date.default = self.date.data
+        else:
+            self.date.default = self.last_pitstop.date
+        if self.odometer.data:
+            self.odometer.default = self.odometer.data
+        else:
+            self.odometer.default = self.last_pitstop.odometer
+        if self.litres.data:
+            self.litres.default = self.litres.data
+        else:
+            self.litres.default = self.last_pitstop.amount
+        if self.costs.data:
+            self.costs.default = self.costs.data
+        else:
+            self.costs.default = self.last_pitstop.costs
+
+    def get_hint_messages(self):
+        if self.same_odometer_allowed:
+            or_equal = ' or equal to'
+        else:
+            or_equal = ''
+        messages = {
+            'date': 'Date must be between %s and %s (including).' % (str(self.last_pitstop.date), str(date.today())),
+            'odometer': 'Odometer must be greater than%s %s km.' % (or_equal, str(self.last_pitstop.odometer)),
+            'costs': 'Costs must be higher than 0.01 €.'
+        }
+        return messages
+
 
 class EditVehicleForm(Form):
     name = StringField('Name', validators=[Length(1, 255)])
+    consumables = SelectMultipleField('Consumables', coerce=int,validators=[])
     submit = SubmitField(label='Do it!')
 
 
@@ -72,8 +134,36 @@ class EditPitstopForm(Form):
     costs = DecimalField('Costs (€, overall)', places=2, validators=[edit_costs_check])
     submit = SubmitField(label='Update it!')
     last_pitstop = None
+    same_odometer_allowed = True
 
     def set_pitstop(self, last_pitstop):
         self.last_pitstop = last_pitstop
 
+    def set_consumable(self, consumable):
+        self.litres.label = '%s (%s)' % (consumable.name, consumable.unit)
 
+    def preinit_with_data(self):
+        if self.date.data:
+            self.date.default = self.date.data
+        if self.odometer.data:
+            self.odometer.default = self.odometer.data
+        if self.litres.data:
+            self.litres.default = self.litres.data
+        if self.costs.data:
+            self.costs.default = self.costs.data
+
+
+class CreateConsumableForm(Form):
+    name = StringField('Name', validators=[Length(1, 255)])
+    unit = StringField('Unit', validators=[Length(1, 255)])
+    submit = SubmitField(label='Do it!')
+
+
+class EditConsumableForm(Form):
+    name = StringField('Name', validators=[Length(1, 255)])
+    unit = StringField('Unit', validators=[Length(1, 255)])
+    submit = SubmitField(label='Do it!')
+
+
+class DeletConsumableForm(Form):
+    submit = SubmitField(label='Do it!')

app/rollerverbrauch/templates/account.html

@@ -36,7 +36,8 @@
                             {{ vehicle.name }}
                         </td>
                         <td>
-                            {{ vehicle.pitstops | length }} pitstops
+                            {{ vehicle.pitstops | length }} pitstops<br />
+                            {{ vehicle.consumables | length }} consumables
                         </td>
                         <td>
                             <a href="{{ url_for('edit_vehicle', vid=vehicle.id) }}" class="btn btn-primary " role="button">

app/rollerverbrauch/templates/admin.html

@@ -1,18 +1,66 @@
 {% extends "layout.html" %}
 
 {% block body %}
-<div class="col-md-2" ></div>
-<div class="col-md-8">
-    <div class="panel panel-default">
-        <div class="panel-body">
     <h3>Admin</h3>
-            We have {{ data.users|length }} users so far:
+    <div class="panel panel-default">
+        <div class="panel-heading">Users</div>
+        <div class="panel-body">
+            We have {{ users|length }} users so far:
             <ul>
-                {% for user in data.users %}
+                {% for user in users %}
                     <li>{{user.email}}</li>
                 {% endfor %}
-            </ul>
         </div>
     </div>
+
+    <div class="panel panel-default">
+        <div class="panel-heading">Consumables</div>
+        <div class="panel-body">
+            <a href="{{ url_for('create_consumable') }}" class="btn btn-primary " role="button">
+                <span class="glyphicon glyphicon-plus" aria-hidden="true"></span> create
+            </a>
         </div>
+        <table class="table table-striped table-bordered">
+            <tbody>
+                <tr>
+                    <th>
+                        Name
+                    </th>
+                    <th>
+                        Unit
+                    </th>
+                    <th>
+                        Used by
+                    </th>
+                    <th>
+                        Actions
+                    </th>
+                </tr>
+                {% for consumable in consumables %}
+                    <tr>
+                        <td>
+                            {{ consumable.name }}
+                        </td>
+                        <td>
+                            {{ consumable.unit }}
+                        </td>
+                        <td>
+                            {{ consumable.vehicles | length }} vehicles
+                        </td>
+                        <td>
+                            {% if not consumable.in_use %}
+                                <a href="{{ url_for('delete_consumable', cid=consumable.id) }}"  class="btn btn-primary btn-warning " role="button">
+                                    <span class="glyphicon glyphicon-trash" aria-hidden="true"></span> delete
+                                </a>
+                            {% endif %}
+                            <a href="{{ url_for('edit_consumable', cid=consumable.id) }}" class="btn btn-primary " role="button">
+                                <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span> edit
+                            </a>
+                        </td>
+                    </tr>
+                {% endfor %}
+            </tbody>
+        </table>
+    </div>
+
 {% endblock %}

app/rollerverbrauch/templates/createConsumableForm.html

@@ -0,0 +1,19 @@
+{% extends "layout.html" %}
+
+{% block body %}
+<div class="col-md-2" ></div>
+<div class="col-md-8">
+    <div class="panel panel-default">
+        <div class="panel-body">
+            <h3>Create consumable</h3>
+            <form class='form-horizontal' method="POST">
+                {{ form.hidden_tag() }}
+                {{ render_field_with_errors(form.name) }}
+                {{ render_field_with_errors(form.unit) }}
+                {{ render_field_with_errors(form.submit) }}
+            </form>
+        </div>
+    </div>
+</div>
+<div class="col-md-2" ></div>
+{% endblock %}

app/rollerverbrauch/templates/createPitStopForm.html

@@ -26,4 +26,5 @@
         </div>
     </div>
 </div>
+<div class="col-md-2" ></div>
 {% endblock %}

app/rollerverbrauch/templates/createVehicleForm.html

@@ -9,6 +9,7 @@
             <form class='form-horizontal' method="POST">
                 {{ form.hidden_tag() }}
                 {{ render_field_with_errors(form.name) }}
+                {{ render_field_with_errors(form.consumables) }}
                 {{ render_field_with_errors(form.submit) }}
             </form>
         </div>

app/rollerverbrauch/templates/deleteConsumableForm.html

@@ -0,0 +1,18 @@
+{% extends "layout.html" %}
+
+{% block body %}
+<div class="col-md-2" ></div>
+<div class="col-md-8">
+    <div class="panel panel-default">
+        <div class="panel-body">
+            <h3>Delete vehicle '{{consumable.name}}'?</h3>
+            <form class='form-horizontal' method="POST">
+                {{ form.hidden_tag() }}
+                {{ render_field_with_errors(form.submit) }}
+
+            </form>
+        </div>
+    </div>
+</div>
+<div class="col-md-2" ></div>
+{% endblock %}

app/rollerverbrauch/templates/editConsumableForm.html

@@ -0,0 +1,19 @@
+{% extends "layout.html" %}
+
+{% block body %}
+<div class="col-md-2" ></div>
+<div class="col-md-8">
+    <div class="panel panel-default">
+        <div class="panel-body">
+            <h3>Edit consumable </h3>
+            <form class='form-horizontal' method="POST">
+                {{ form.hidden_tag() }}
+                {{ render_field_with_errors(form.name) }}
+                {{ render_field_with_errors(form.unit) }}
+                {{ render_field_with_errors(form.submit) }}
+            </form>
+        </div>
+    </div>
+</div>
+<div class="col-md-2" ></div>
+{% endblock %}

app/rollerverbrauch/templates/editVehicleForm.html

@@ -9,6 +9,7 @@
             <form class='form-horizontal' method="POST">
                 {{ form.hidden_tag() }}
                 {{ render_field_with_errors(form.name) }}
+                {{ render_field_with_errors(form.consumables) }}
                 {{ render_field_with_errors(form.submit) }}
             </form>
         </div>

app/rollerverbrauch/templates/layout.html

@@ -85,30 +85,6 @@
 {% endmacro %}
 
 
-{% macro chartScript(divId, data, unit)%}
-    {% set hash = divId | md5 %}
-
-    data_{{ hash }} = [{% for stop in data %}{
-                                "date": "{{stop.date}}",
-                                "value": {{stop.value}}
-                            }{% if not loop.last %},{%endif%}
-                            {% endfor%}
-                            ]
-    var chart_{{ hash }} = createChart('{{divId}}', data_{{ hash }}, '{{unit}}');
-
-    function zoom_chart_{{ hash }}() {
-        chart_{{ hash }}.zoomToIndexes(
-            chart_{{ hash }}.dataProvider.length - 40,
-            chart_{{ hash }}.dataProvider.length - 1
-        );
-    }
-
-    chart_{{ hash }}.addListener("rendered", zoom_chart_{{ hash }});
-
-    zoom_chart_{{ hash }}()
-
-{% endmacro %}
-
 
 <!doctype html>
 <!--[if lt IE 7]>      <html class="no-js lt-ie9 lt-ie8 lt-ie7" lang=""> <![endif]-->

app/rollerverbrauch/templates/pitstops.html

@@ -1,6 +1,7 @@
  {% extends "layout.html" %}
 {% block body %}
-    <div id="content">
+    <div class="col-md-2" ></div>
+    <div class="col-md-8">
         <ul id="tabs" class="nav nav-tabs" data-tabs="tabs">
             {% for vehicle in current_user.vehicles %}
                 <li {% if loop.first %}class="active" {%endif %}>
@@ -15,93 +16,54 @@
                 <div class="tab-pane {% if loop.first %}active{% endif %}" id="v{{vehicle.id}}">
                     <h3>{{vehicle.name}}</h3>
                     {% if vehicle.pitstops %}
-                        <div class="table-responsive">
+                        {% for pitstop in vehicle.pitstops|reverse %}
+                            <div class="panel panel-default">
+                                <div class="panel-body">
                                     <table class="table table-striped table-bordered table-condensed">
                                         <tr>
-                                    <th>
+                                            <th>Date</th>
-                                        Date<br/>
+                                            <td>{{pitstop.date}}</td>
-                                        Days
-                                    </th>
-                                    <th>
-                                        Odometer<br/>
-                                        Distance
-                                    </th>
-                                    <th>
-                                        Litres<br/>
-                                        Average
-                                    </th>
-                                    <th>
-                                        Costs<br />
-                                        Costs per Litre
-                                    </th>
                                         </tr>
-                                {% for pitstop in vehicle.pitstops|reverse %}
+                                        <tr>
-                                    {% if not loop.last %}
+                                            <th>Odometer</th>
-                                        {% set days = (pitstop.date - vehicle.pitstops[vehicle.pitstops|length - loop.index - 1].date).days %}
+                                            <td>{{pitstop.odometer}} km</td>
-                                        {% set distance = pitstop.odometer - vehicle.pitstops[vehicle.pitstops|length - loop.index - 1].odometer %}
+                                        </tr>
-                                        {% set average = (pitstop.litres / distance) * 100 %}
+                                        <tr>
-                                        <tr class='pitstop'>
+                                            <th>{{ pitstop.consumable.name }}</th>
+                                            <td>{{pitstop.amount}} {{ pitstop.consumable.unit }}</td>
+                                        </tr>
+                                        <tr>
+                                            <th>Costs</th>
                                             <td>
-                                                {{pitstop.date}}<br/>
+                                                {% if pitstop.costs %}
-                                                {{ days }} days
+                                                    {{pitstop.costs}} €
-                                            </td>
+                                                {% else %}
-                                            <td>
+                                                    -- €
-                                                {{pitstop.odometer}} km<br/>
+                                                {% endif %}
-                                                {{distance}} km
-                                            </td>
-                                            <td>
-                                                {{pitstop.litres}} l<br/>
-                                                {{average | round(2)}} l/100km
-                                            </td>
-                                            <td>
-                                                {{pitstop.costs}} €<br />
-                                                {{ (pitstop.costs / pitstop.litres) | round(2) }} €/l
                                             </td>
                                         </tr>
+                                    </table>
                                     {% if loop.first %}
-                                            <tr class='pitstop'>
-                                                <td colspan='4'>
                                         <a href="{{ url_for('edit_pit_stop_form', pid=pitstop.id) }}" class="btn btn-primary">
                                             <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span> edit
                                         </a>
                                         <a href="{{ url_for('delete_pit_stop_form', pid=pitstop.id) }}" class="btn btn-primary btn-warning ">
                                             <span class="glyphicon glyphicon-trash" aria-hidden="true"></span> delete
                                         </a>
-                                                </td>
-                                            </tr>
                                     {% endif %}
-                                    {% else %}
-                                        <tr class='pitstop'>
-                                            <td>
-                                                {{pitstop.date}}<br/>
-                                                -- days
-                                            </td>
-                                            <td>
-                                                {{pitstop.odometer}} km<br/>
-                                                -- km
-                                            </td>
-                                            <td>
-                                                {{pitstop.litres}} l<br/>
-                                                -- l/100km
-                                            </td>
-                                            <td>
-                                                {{pitstop.costs}} €<br />
-                                                {{ (pitstop.costs / pitstop.litres) | round(2) }} €/l
-                                            </td>
-                                        </tr>
-                                    {% endif %}
-                                {% endfor %}
-                            </table>
                                 </div>
+                            </div>
+                        {% endfor %}
                     {% else %}
                         <div class="alert alert-warning" role="alert">
-                            not enough data: <a href="{{ url_for('create_pit_stop_form', vid=vehicle.id) }}">log a pitstop</a>?
+                            not enough data: <a href="{{ url_for('select_consumable_for_new_pitstop', vid=vehicle.id) }}">log a pitstop</a>?
                         </div>
                     {% endif %}
                 </div>
             {% endfor %}
         </div>
     </div>
+    <div class="col-md-2" ></div>
 
 
     <script type="text/javascript">

app/rollerverbrauch/templates/selectConsumableForVehicle.html

@@ -0,0 +1,19 @@
+{% extends "layout.html" %}
+
+{% block body %}
+<div class="col-md-2" ></div>
+<div class="col-md-8">
+    <div class="panel panel-default">
+        <div class="panel-body">
+            <h3>Select Consumable for '{{ vehicle.name }}'</h3>
+            <form class='form-horizontal' method="POST">
+                {{ form.hidden_tag() }}
+                {{ render_field_with_errors(form.consumable) }}
+                {{ render_field_with_errors(form.submit) }}
+            </form>
+        </div>
+    </div>
+</div>
+<div class="col-md-2" ></div>
+{% endblock %}
+

app/rollerverbrauch/templates/statistics.html

@@ -1,161 +1,175 @@
 {% extends "layout.html" %}
 
-{% block body %}
+{% macro chartScript(divId, data, unit)%}
-    <div id="content">
+    {% set hash = divId | md5 %}
-        <ul id="vehicle_tabs" class="nav nav-tabs" data-tabs="tabs">
+
-            {% for vehicle in data %}
+    data_{{ hash }} = [{% for stop in data %}{
-                <li {% if loop.first %}class="active" {%endif %}>
+                                "date": "{{stop.date}}",
-                    <a href="#v{{vehicle.id}}" id="i{{vehicle.id}}" data-toggle="tab">
+                                "value": {{stop.value}}
-                        {{ vehicle.name }}
+                            }{% if not loop.last %},{%endif%}
+                            {% endfor%}
+                            ]
+    var chart_{{ hash }} = createChart('{{divId}}', data_{{ hash }}, '{{unit}}');
+
+    function zoom_chart_{{ hash }}() {
+        chart_{{ hash }}.zoomToIndexes(
+            chart_{{ hash }}.dataProvider.length - 40,
+            chart_{{ hash }}.dataProvider.length - 1
+        );
+    }
+
+    chart_{{ hash }}.addListener("rendered", zoom_chart_{{ hash }});
+
+    zoom_chart_{{ hash }}()
+{% endmacro %}
+
+{% macro nav_tab(id, text, active) %}
+    {#
+
+    #}
+    <li class="{% if active %}active{% endif %}">
+        <a href="#ref_{{id}}" id="id_{{id}}" data-toggle="tab" >
+            {{ text }}
         </a>
     </li>
-            {% endfor %}
+{% endmacro %}
-        </ul>
+
-        <div id="vehicle_content" class="tab-content ">
+{% macro tab_pane(id, content, active) %}
-            {% for vehicle in data %}
+     <div class="tab-pane {% if active %}active{% endif %}" id="ref_{{ id }}">
-                <div class="tab-pane {% if loop.first %}active{% endif %}" id="v{{vehicle.id}}">
+         {{ content }}
+     </div>
+{% endmacro %}
+
+{% macro chart(data, baseId, unit, link) %}
+    {% if data|length > 0 %}
+        {% set chartID = 'chart_' + baseId %}
+        <div id="{{ chartID }}" style="width:100%; height:500px;"></div>
+        <script type="text/javascript">
+            {{ chartScript(chartID, data, unit) }}
+        </script>
+    {% else %}
+        <div class="alert alert-warning" role="alert">
+            not enough data: <a href="{{ link }}">log a pitstop</a>?
+        </div>
+    {% endif %}
+{% endmacro %}
+
+{% macro print_consumable_table(consumable) %}
+    <table class="table table-striped table-bordered table-condensed">
+        <tr>
+            <th>Average Distance:</th>
+            <td>{{ consumable.average_distance | round(2) }} km</td>
+        </tr>
+        <tr>
+            <th>Amount fuelled:</th>
+            <td>{{ consumable.overall_amount | round(2) }} {{ consumable.unit }}</td>
+        </tr>
+        <tr>
+            <th>Average Amount fuelled:</th>
+            <td>{{ consumable.average_amount_fuelled | round(2) }} {{ consumable.unit }}</td>
+        </tr>
+        <tr>
+            <th>Average Amount used:</th>
+            <td>{{ consumable.average_amount_used | round(2) }} {{ consumable.unit }}/100km</td>
+        </tr>
+    </table>
+{% endmacro %}
+
+{% macro print_vehicle_table(vehicle) %}
     <h3>{{vehicle.name}}</h3>
     <div class="table-responsive">
         <table class="table table-striped table-bordered table-condensed">
-							<tr>
-								<th>Number of Pitstops:</th>
-								<td>{{ vehicle.pitstop_count }}</td>
-							</tr>
             <tr>
                 <th>Logged Distance:</th>
                 <td>{{ vehicle.overall_distance | round(2) }} km</td>
             </tr>
-							<tr>
-								<th>Average Distance:</th>
-								<td>{{ vehicle.average_distance | round(2) }} km</td>
-							</tr>
-								<tr>
-								<th>Litres fuelled:</th>
-								<td>{{ vehicle.overall_litres | round(2) }} l</td>
-							</tr>
-							<tr>
-								<th>Average Litres fuelled:</th>
-								<td>{{ vehicle.average_litres_fuelled | round(2) }} l</td>
-							</tr>
-							<tr>
-								<th>Average Litres used:</th>
-								<td>{{ vehicle.average_litres_used | round(2) }} l/100km</td>
-							</tr>
             <tr>
                 <th>Logged Costs:</th>
                 <td>{{ vehicle.overall_costs | round(2) }} €</td>
             </tr>
-							<tr>
-								<th>Average Costs per Litre:</th>
-								<td>{{ vehicle.average_costs_per_litre | round(2) }} €/l</td>
-							</tr>
         </table>
     </div>
-                    <ul id="charts_tabs" class="nav nav-tabs" data-tabs="tabs">
+{% endmacro %}
-                        <li class="active">
-                            <a href="#v{{vehicle.id}}_c3" id="i{{vehicle.id}}_c3" data-toggle="tab">
-                                Consumption
-                            </a>
-                        </li>
-                        <li>
-                            <a href="#v{{vehicle.id}}_c1" id="i{{vehicle.id}}_c1" data-toggle="tab">
-                                Fuelled litres
-                            </a>
-                        </li>
-                        <li>
-                            <a href="#v{{vehicle.id}}_c2" id="i{{vehicle.id}}_c2" data-toggle="tab">
-                                Odometer
-                            </a>
-                        </li>
-                        <li>
-                            <a href="#v{{vehicle.id}}_c4" id="i{{vehicle.id}}_c4" data-toggle="tab">
-                                Costs per litre
-                            </a>
-                        </li>
-                        <li>
-                            <a href="#v{{vehicle.id}}_c5" id="i{{vehicle.id}}_c5" data-toggle="tab">
-                                Costs
-                            </a>
-                        </li>
-                    </ul>
-                    <div id="charts_tabs-content" class="tab-content">
-                       <div class="tab-pane active" id="v{{vehicle.id}}_c3">
-                            {% if vehicle.pitstop_count > 1 %}
-    					        <div id="averageUsageDiv{{vehicle.id}}" style="width:100%; height:500px;"></div>
-                                <script type="text/javascript">
-                                    {{ chartScript('averageUsageDiv'+vehicle.id|str, vehicle.average_litres, 'l/100 km') }}
-                                </script>
-                            {% else %}
-                                <div class="alert alert-warning" role="alert">
-                                    not enough data: <a href="{{ url_for('create_pit_stop_form', vid=vehicle.id) }}">log a pitstop</a>?
-                                </div>
-                            {% endif %}
-                        </div>
-                        <div class="tab-pane " id="v{{vehicle.id}}_c1">
-                            {% if vehicle.pitstop_count > 0 %}
- 					            <div id="fuelledChartDiv{{vehicle.id}}" style="width:100%; height:500px;"></div>
-                                <script type="text/javascript">
-                                    {{ chartScript('fuelledChartDiv'+vehicle.id|str, vehicle.litres, 'l') }}
-                                </script>
-                            {% else %}
-                                <div class="alert alert-warning" role="alert">
-                                    not enough data: <a href="{{ url_for('create_pit_stop_form', vid=vehicle.id) }}">log a pitstop</a>?
-                                </div>
-                            {% endif %}
-                        </div>
-                        <div class="tab-pane " id="v{{vehicle.id}}_c2">
-                            {% if vehicle.pitstop_count > 0 %}
-    					        <div id="odometerChartDiv{{vehicle.id}}" style="width:100%; height:500px;"></div>
-                                <script type="text/javascript">
-                                    {{ chartScript('odometerChartDiv'+vehicle.id|str, vehicle.odometers, 'km') }}
-                                </script>
-                            {% else %}
-                                <div class="alert alert-warning" role="alert">
-                                    not enough data: <a href="{{ url_for('create_pit_stop_form', vid=vehicle.id) }}">log a pitstop</a>?
-                                </div>
-                            {% endif %}
-                        </div>
-                        <div class="tab-pane " id="v{{vehicle.id}}_c4">
-                            {% if vehicle.pitstop_count > 0 %}
-    					        <div id="costsPerLitre{{vehicle.id}}" style="width:100%; height:500px;"></div>
-                                <script type="text/javascript">
-                                    {{ chartScript('costsPerLitre'+vehicle.id|str, vehicle.costsPerLitre, '€/l') }}
-                                </script>
-                            {% else %}
-                                <div class="alert alert-warning" role="alert">
-                                    not enough data: <a href="{{ url_for('create_pit_stop_form', vid=vehicle.id) }}">log a pitstop</a>?
-                                </div>
-                            {% endif %}
-                        </div>
-                        <div class="tab-pane " id="v{{vehicle.id}}_c5">
-                            {% if vehicle.pitstop_count > 0 %}
-    					        <div id="costs{{vehicle.id}}" style="width:100%; height:500px;"></div>
-                                <script type="text/javascript">
-                                    {{ chartScript('costs'+vehicle.id|str, vehicle.costs, '€') }}
-                                </script>
-                            {% else %}
-                                <div class="alert alert-warning" role="alert">
-                                    not enough data: <a href="{{ url_for('create_pit_stop_form', vid=vehicle.id) }}">log a pitstop</a>?
-                                </div>
-                            {% endif %}
-                        </div>
-                    </div>
-                </div>
-            {% endfor %}
-        </div>
-    </div>
-
 
+{% macro tab_script(id) %}
     <script type="text/javascript">
         jQuery(document).ready(function ($) {
-            $('#vehicle_tabs').tab();
+            $('#{{id}}').tab();
             if(window.location.hash != "") {
                   $('a[href="' + window.location.hash + '"]').click()
             }
           });
-
     </script>
+{% endmacro %}
 
-
+{% block body %}
-
+    <div id="content">
+        <ul id="vehicle_tabs" class="nav nav-tabs" data-tabs="tabs">
+            {% for vehicle in data %}
+                {{ nav_tab(vehicle.id, vehicle.name, loop.first) }}
+            {% endfor %}
+        </ul>
+        <div id="vehicle_content" class="tab-content ">
+            {% for vehicle in data %}
+                <div class="tab-pane {% if loop.first %}active{% endif %}" id="ref_{{vehicle.id}}">
+                    {{ print_vehicle_table(vehicle) }}
+                    <ul id="vehicle_{{vehicle.id}}_tabs" class="nav nav-tabs" data-tabs="tabs">
+                        {{ nav_tab(vehicle.id|string + '_odometer', 'Odometer', true) }}
+                        {% for consumable in vehicle.consumables %}
+                            {{ nav_tab(vehicle.id|string + '_' + consumable.id|string, consumable.name, false) }}
+                        {% endfor %}
+                    </ul>
+                    <div id="vehicle_{{vehicle.id}}_content" class="tab-content ">
+                        {{ tab_pane(
+                            vehicle.id|string + '_odometer',
+                            chart(
+                                vehicle.odometers,
+                                'ref_' + vehicle.id|string + '_odometer',
+                                'km',
+                                url_for('select_consumable_for_new_pitstop', vid=vehicle.id)
+                            ),
+                            true
+                            )
+                        }}
+                        {% for consumable in vehicle.consumables %}
+                            <div class="tab-pane" id="ref_{{vehicle.id}}_{{consumable.id}}">
+                                {{ print_consumable_table(consumable) }}
+                                <ul id="consumable_{{vehicle.id}}_{{consumable.id}}_tabs" class="nav nav-tabs" data-tabs="tabs">
+                                    {{ nav_tab(vehicle.id|string + '_' + consumable.id|string + '_consumption', 'Consumption', true) }}
+                                    {{ nav_tab(vehicle.id|string + '_' + consumable.id|string + '_amount', 'Amount', false) }}
+                                </ul>
+                                <div id="consumable_{{vehicle.id}}_{{consumable.id}}_content" class="tab-content ">
+                                    {{ tab_pane(
+                                        vehicle.id|string + '_' + consumable.id|string + '_consumption',
+                                        chart(
+                                            consumable.average_amount,
+                                            'ref_' + vehicle.id|string + '_' + consumable.id|string + '_consumption',
+                                            consumable.unit + '/100km',
+                                            url_for('create_pit_stop_form', vid=vehicle.id, cid=consumable.id)
+                                            ),
+                                        true
+                                        )
+                                    }}
+                                    {{ tab_pane(
+                                        vehicle.id|string + '_' + consumable.id|string + '_amount',
+                                        chart(
+                                            consumable.amounts,
+                                            'ref_' + vehicle.id|string + '_' + consumable.id|string + '_amount',
+                                            consumable.unit,
+                                            url_for('create_pit_stop_form', vid=vehicle.id, cid=consumable.id)
+                                            ),
+                                        false
+                                        )
+                                    }}
+                                </div>
+                                {{ tab_script('vehicle_' + vehicle.id|string + '_' + consumable.id|string + '_tabs') }}
+                            </div>
+                        {% endfor %}
+                    </div>
+                    {{ tab_script('vehicle_' + vehicle.id|string + '_tabs') }}
+                </div>
+            {% endfor %}
+        </div>
+        {{ tab_script('vehicle_tabs') }}
+    </div>
 {% endblock %}

app/rollerverbrauch/tools.py

@@ -1,52 +1,65 @@
 import logging
+from datetime import date
+
+from rollerverbrauch.entities import \
+    Pitstop
+
+
+class ConsumableStats:
+    def __init__(self, vehicle, consumable):
+        self.name = consumable.name
+        self.id = consumable.id
+        self.unit = consumable.unit
+        self.overall_amount = 0
+        self.average_distance = 0
+        self.average_amount_fuelled = 0
+        self.average_amount_used = 0
+        self.average_amount = []
+        self.amounts = []
+
+        pitstops = [stop for stop in vehicle.pitstops if stop.consumable_id == consumable.id]
+        pitstop_count = len(pitstops)
+
+        if pitstop_count > 0:
+            for pitstop in pitstops:
+                self.overall_amount += pitstop.amount
+                self.amounts.append(StatsEvent(pitstop.date, pitstop.amount))
+            self.average_amount_fuelled = self.overall_amount / pitstop_count
+        if pitstop_count > 1:
+            overall_distance = vehicle.pitstops[-1].odometer - vehicle.pitstops[0].odometer
+            self.average_distance = overall_distance / (pitstop_count - 1)
+            self.average_amount_used = 100 * (self.overall_amount - pitstops[0].amount) / overall_distance
+            for index in range(1, pitstop_count):
+                last_ps = pitstops[index - 1]
+                current_ps = pitstops[index]
+                self.average_amount.append(
+                    StatsEvent(
+                        current_ps.date,
+                        round(100 * current_ps.amount/(current_ps.odometer - last_ps.odometer), 2)))
 
 
 class VehicleStats:
     def __init__(self, vehicle):
         self.name = vehicle.name
         self.id = vehicle.id
-        self.pitstop_count = len(vehicle.pitstops)
         self.overall_distance = 0
-        self.average_distance = 0
-        self.overall_litres = 0
-        self.average_litres_fuelled = 0
-        self.average_litres_used = 0
-        self.litres = []
-        self.average_litres = []
-        self.odometers = []
-        self.costsPerLitre = []
-        self.costs = []
         self.overall_costs = 0
-        self.average_costs_per_litre = 0
+        self.consumables = []
-        cost_count = 0;
+        self.odometers = []
 
-        if self.pitstop_count > 0:
+        for consumable in vehicle.consumables:
+            self.consumables.append(ConsumableStats(vehicle, consumable))
+
+        pitstop_count = len(vehicle.pitstops)
+
+        if pitstop_count > 0:
              for pitstop in vehicle.pitstops:
-                self.overall_litres += pitstop.litres
-                self.litres.append(StatsEvent(pitstop.date, pitstop.litres))
                  self.odometers.append(StatsEvent(pitstop.date, pitstop.odometer))
-                self.costsPerLitre.append(StatsEvent(pitstop.date, pitstop.costs / pitstop.litres))
+                 if pitstop.costs is not None:
-                self.costs.append(StatsEvent(pitstop.date, pitstop.costs))
                     self.overall_costs += pitstop.costs
-                self.average_costs_per_litre += (pitstop.costs / pitstop.litres)
-                if pitstop.costs > 0:
-                    cost_count += 1
-            self.average_litres_fuelled = self.overall_litres / self.pitstop_count
-            if cost_count > 0:
-                self.average_costs_per_litre = self.average_costs_per_litre / cost_count
-            else:
-                self.average_costs_per_litre = 0
 
-        if self.pitstop_count > 1:
+        if pitstop_count > 1:
             self.overall_distance = vehicle.pitstops[-1].odometer - vehicle.pitstops[0].odometer
-            self.average_distance = self.overall_distance / (self.pitstop_count - 1)
-            self.average_litres_used = 100 * (self.overall_litres - vehicle.pitstops[0].litres) / self.overall_distance
-            for index in range(1, self.pitstop_count):
-                last_ps = vehicle.pitstops[index - 1]
-                current_ps = vehicle.pitstops[index]
-                self.average_litres.append(StatsEvent(
-                    current_ps.date,
-                    round(100 * current_ps.litres/(current_ps.odometer - last_ps.odometer), 2)))
 
 
 class StatsEvent:
@@ -83,3 +96,83 @@ def check_vehicle_name_is_unique(current_user, name_field):
             name_field.errors.append('Vehicle "%s" already exists.' % vehicle_name)
             return False
     return True
+
+
+def get_latest_pitstop_for_vehicle(vehicle_id):
+    """
+    return the latest pit stop for the vehicle with the given id.
+    :param vehicle_id: the id of the vehicle
+    :return: the latest pitstop or None if no pitstop exists
+    """
+    latest_pitstop = Pitstop.query\
+        .filter(Pitstop.vehicle_id == vehicle_id)\
+        .order_by(Pitstop.id.desc())\
+        .first()
+    return latest_pitstop
+
+
+def get_latest_pitstop_for_vehicle_and_consumable(vehicle_id, consumable_id):
+    """
+    return the latest pit stop for the vehicle and consumable with the given ids.
+    :param vehicle_id: the id of the vehicle
+    :param consumable_id: the id of the consumable
+    :return: the latest pitstop or None if no pitstop exists
+    """
+    latest_pitstop_consumable = Pitstop.query\
+        .filter(Pitstop.vehicle_id == vehicle_id)\
+        .filter(Pitstop.consumable_id == consumable_id)\
+        .order_by(Pitstop.id.desc())\
+        .first()
+    return latest_pitstop_consumable
+
+
+def compute_lower_limits_for_new_pitstop(latest_pitstop, last_pitstop_consumable, consumable_id):
+    """
+    This function figures out the lower limits for date and odometer of a new pitstop.
+    :param latest_pitstop:
+    :param last_pitstop_consumable:
+    :param consumable_id:
+    :return:
+    """
+    odometer = 0
+    date_of_pitstop = date(1970, 1, 1)
+    amount = 0
+    costs = 0
+
+    if latest_pitstop is not None:
+        odometer = latest_pitstop.odometer
+        date_of_pitstop = latest_pitstop.date
+
+    if last_pitstop_consumable is not None:
+        amount = last_pitstop_consumable.amount
+        costs = last_pitstop_consumable.costs
+
+    return Pitstop(odometer, amount, date_of_pitstop, costs, consumable_id)
+
+
+    # if latest_pitstop is not None:
+    #     if last_pitstop_consumable is not None and last_pitstop_consumable != latest_pitstop:
+    #         if latest_pitstop.id > last_pitstop_consumable.id:
+    #             return Pitstop(latest_pitstop.odometer,
+    #                            last_pitstop_consumable.overall_amount,
+    #                            latest_pitstop.date,
+    #                            last_pitstop_consumable.costs,
+    #                            consumable_id)
+    #         else:
+    #             return Pitstop(last_pitstop_consumable.odometer,
+    #                            last_pitstop_consumable.overall_amount,
+    #                            last_pitstop_consumable.date,
+    #                            last_pitstop_consumable.costs,
+    #                            consumable_id)
+    #     else:
+    #         # either only one pitstop exists or both are the same
+    #         litres = 0
+    #         costs = 0
+    #         if latest_pitstop.consumable_id == last_pitstop_consumable.consumable_id:
+    #             litres = latest_pitstop.overall_amount
+    #             costs = latest_pitstop.costs
+    #         return Pitstop(latest_pitstop.odometer, litres, latest_pitstop.date, costs, consumable_id)
+    # else:
+    #     # No existing pitstop at all: insert fake data
+    #     return Pitstop(0, 0, date(1970, 1, 1), 0, None)
+

database_upgrades/upgrade_cathrine_to_danielle.sql

@@ -0,0 +1,28 @@
+CREATE TABLE IF NOT EXISTS `consumable` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `name` varchar(255) DEFAULT NULL,
+  `unit` varchar(255) DEFAULT NULL,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `name` (`name`)
+) ENGINE=InnoDB AUTO_INCREMENT=31 DEFAULT CHARSET=latin1;
+
+INSERT INTO `consumable`(`id`, `name`, `unit`) VALUES (1, 'Super E5', 'l');
+
+CREATE TABLE IF NOT EXISTS `vehicles_consumables` (
+  `vehicle_id` int(11) DEFAULT NULL,
+  `consumable_id` int(11) DEFAULT NULL,
+  KEY `vehicle_id` (`vehicle_id`),
+  KEY `consumable_id` (`consumable_id`),
+  CONSTRAINT `vehicles_consumables_ibfk_1` FOREIGN KEY (`vehicle_id`) REFERENCES `vehicle` (`id`),
+  CONSTRAINT `vehicles_consumables_ibfk_2` FOREIGN KEY (`consumable_id`) REFERENCES `consumable` (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1;
+
+ALTER TABLE `pitstop` ADD COLUMN `costs` decimal(5,2) DEFAULT NULL;
+
+ALTER TABLE `pitstop` CHANGE `litres` `amount`;
+
+ALTER TABLE `pitstop` ADD COLUMN `consumable_id` int(11);
+ALTER TABLE `pitstop` ADD FOREIGN KEY (`consumable_id`) REFERENCES `consumable` (`id`);
+UPDATE `pitstop` set `consumable_id`=1;
+
+INSERT INTO `vehicles_consumables`(`vehicle_id`, `consumable_id`) SELECT `id`, 1 FROM `vehicle`;