Added database and start with the api

README.md

@@ -2,3 +2,11 @@
 
 
 Bra länk: https://scotch.io/tutorials/build-a-crud-web-app-with-python-and-flask-part-two
+
+export FLASK_CONFIG=development
+export FLASK_APP=run.py
+
+Init DB
+flask db init
+flask db migrate
+ flask db upgrade

app/__init__.py

@@ -3,17 +3,23 @@ from flask_sqlalchemy import SQLAlchemy
 from flask_migrate import Migrate
 from config import app_config
 
+
 db = SQLAlchemy()
 def create_app(config_name):
-	app = Flask(__name__, instance_relative_config=True)
-	app.config.from_object(app_config[config_name])
-	app.config.from_pyfile('config.py')
-	db.init_app(app)
-	from app import models
-	migrate = Migrate(app, db)
+    app = Flask(__name__, instance_relative_config=True)
+    app.config.from_object(app_config[config_name])
+    app.config.from_pyfile('config.py')
+    db.init_app(app)
+    migrate = Migrate(app, db)
 
-	@app.route('/')
-	def hello_world():
-		return 'Hello, World!'
+    from app import models
 
-	return app
+    from .api import api as api_blueprint
+    app.register_blueprint(api_blueprint)
+
+
+    @app.route('/')
+    def hello_world():
+        return 'Hello, World!'
+
+    return app

app/api/__init__.py

@@ -0,0 +1,4 @@
+from flask import Blueprint
+
+api = Blueprint('api', __name__)
+from . import views

app/api/api.py

@@ -0,0 +1,16 @@
+from . import api
+from ..model import Gas, Car
+from flask import jsonify
+
+
+@api.route('/dummy')
+def dummy():
+    return 'dummy, World!'
+
+@api.route('/cars', methods=['GET', 'POST'])
+def list_cars():
+    cars = Car.query.all()
+    result = [d.__dict__ for d in cars]
+    return jsonify(result=result)
+
+

app/api/views.py

@@ -0,0 +1,50 @@
+from . import api
+from ..models import Gas, Car
+from flask import jsonify, request, abort
+from .. import db
+
+
+@api.route('/dummy')
+def dummy():
+    return 'dummy, World!'
+
+
+@api.route('/cars', methods=['GET', 'POST'])
+def list_cars():
+    cars = Car.query.first()
+    return jsonify(result=cars.get_public())
+
+
+@api.route('/gas', methods=['GET', 'POST'])
+def list_gas():
+    gas = Gas.query.first()
+    return jsonify(result=gas.get_public())
+
+
+@api.route('/gas/add', methods=['POST'])
+def add_gas():
+    if not request.json:
+        abort(400)
+    if not 'price' in request.json:
+        abort(400)
+    if not 'volume' in request.json:
+        abort(400)
+    if not 'milage' in request.json:
+        abort(400)
+    if not 'car' in request.json:
+        abort(400)
+
+    price = request.json['price']
+    volume = request.json['volume']
+    milage = request.json['milage']
+    car = request.json['car']
+    car_id = Car.query.get_or_404(car)
+    gas = Gas(price=price, volume=volume, milage=milage, car_id=car_id)
+    db.session.add(gas)
+    db.session.commit()
+
+
+
+    return jsonify(result="OK")
+
+

app/models.py

@@ -1,19 +1,75 @@
 from app import db
-from datetime import datetime
+from datetime import datetime, date
 
-class Gas(db.Model):
-	"""
-	Create a gas table
-	"""
 
-	__tablename__ = 'gas'
+class AutoSerialize(object):
+    'Mixin for retrieving public fields of model in json-compatible format'
+    __public__ = None
 
-	id = db.Column(db.Integer, primary_key=True)
-	price = db.Column(db.Integer)
-	volume = db.Column(db.Integer)
-	milage = db.Column(db.Integer)
-	date = db.Column(db.DateTime, default=datetime.utcnow)
-	winterTyre = db.Column(db.Boolean)
+    def get_public(self, exclude=(), extra=()):
+        "Returns model's PUBLIC data for jsonify"
+        data = {}
+        keys = self._sa_instance_state.attrs.items()
+        public = self.__public__ + extra if self.__public__ else extra
+        for k, field in keys:
+            if public and k not in public: continue
+            if k in exclude: continue
+            value = self._serialize(field.value)
+            if value:
+                data[k] = value
 
-	def __ref__(self):
-		return '<Gas :{}>'.format(self.id)
+        return data
+
+    @classmethod
+    def _serialize(cls, value, follow_fk=False):
+        if type(value) in (datetime, date):
+            ret = value.isoformat()
+        elif hasattr(value, '__iter__'):
+            ret = []
+            for v in value:
+                ret.append(cls._serialize(v))
+        elif AutoSerialize in value.__class__.__bases__:
+            ret = value.get_public()
+        else:
+            ret = value
+
+        return ret
+
+
+class Gas(db.Model, AutoSerialize):
+    """
+    Create a gas table
+    """
+
+    __table_args__ = {'extend_existing': True}
+    __tablename__ = 'gas'
+    __public__ = ('price', 'volume', 'milage', 'date',
+                  'wintertyre', 'car', 'id')
+
+    id = db.Column(db.Integer, primary_key=True)
+    price = db.Column(db.Integer)
+    volume = db.Column(db.Integer)
+    milage = db.Column(db.Integer)
+    date = db.Column(db.DateTime, default=datetime.utcnow)
+    winterTyre = db.Column(db.Boolean)
+    car_id = db.Column(db.Integer, db.ForeignKey('car.id'))
+
+    def __ref__(self):
+        return '<Gas :{}>'.format(self.id)
+
+
+class Car(db.Model, AutoSerialize):
+    """
+    Create a table of cars
+    """
+
+    __tablename__ = 'car'
+    __public__ = ('name', 'id')
+
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(50))
+    cars = db.relationship('Gas', backref='car',
+                            lazy='dynamic')
+
+    def __ref__(self):
+        return '<Gas :{}>'.format(self.id)

migrations/versions/6ea64b2c52be_added_cars_table.py

@@ -0,0 +1,36 @@
+"""Added cars table
+
+Revision ID: 6ea64b2c52be
+Revises: 46b4c05512b3
+Create Date: 2017-08-23 20:43:41.807113
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '6ea64b2c52be'
+down_revision = '46b4c05512b3'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('car',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('name', sa.String(length=50), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.add_column(u'gas', sa.Column('car_id', sa.Integer(), nullable=True))
+    op.create_foreign_key(None, 'gas', 'car', ['car_id'], ['id'])
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'gas', type_='foreignkey')
+    op.drop_column(u'gas', 'car_id')
+    op.drop_table('car')
+    # ### end Alembic commands ###

requirements.txt

@@ -0,0 +1,15 @@
+alembic==0.9.5
+click==6.7
+Flask==0.12.2
+Flask-Migrate==2.1.0
+Flask-SQLAlchemy==2.2
+itsdangerous==0.24
+Jinja2==2.9.6
+Mako==1.0.7
+MarkupSafe==1.0
+mysqlclient==1.3.10
+python-dateutil==2.6.1
+python-editor==1.0.3
+six==1.10.0
+SQLAlchemy==1.1.13
+Werkzeug==0.12.2