Building blocks for REST APIs for Flask.
Create a SQLAlchemy model and a marshmallow schema, then:
from flask_resty import Api, GenericModelView
from . import app, models, schemas
class WidgetViewBase(GenericModelView):
model = models.Widget
schema = models.WidgetSchema()
class WidgetListView(WidgetViewBase):
def get(self):
return self.list()
def post(self):
return self.create()
class WidgetView(WidgetViewBase):
def get(self, id):
return self.retrieve(id)
def patch(self, id):
return self.update(id, partial=True)
def delete(self, id):
return self.destroy(id)
api = Api(app, '/api')
api.add_resource('/widgets', WidgetListView, WidgetView)By default, models are expected to have been created using Flask-SQLAlchemy.
from flask_sqlalchemy import SQLAlchemy
from sqlalchemy import Column, String
from . import app
db = SQLAlchemy(app)
class Widget(db.Model):
id = Column(String, primary_key=True)
name = Column(String, nullable=False)
color = Column(String, nullable=False)Schemas can be standard marshmallow Schema instances or marshmallow-sqlalchemy TableSchema instances. They should not be ModelSchema instances.
from marshmallow_sqlalchemy import TableSchema
from . import models
class WidgetSchema(TableSchema):
class Meta:
table = models.Widget.__table__