Flask-Restful error: "as_view" method not inherited

Question

I am writting a RESTful API using the Flask framework and the Flask-RESTful plugin. I define my API classes on top of the `Resource` class that this plugin provides, as in the examples. However, when I want to register my classes using the `add_resource` method I get the following error: ``` AttributeError: type object 'UserAPI' has no attribute 'as_view' ``` The `as_view` method is part of the Flask Pluggable Views, this is, the `View` class. The `Resource` class is built on top of this class, and my `UserAPI` class on top of the `Resource` class. For this reason, the `as_view` method should be inherited, but it is not. Any ideas on which could be the problem? Here you can see how I defined the classes: ``` from app import api, db from flask.ext.restful import Resource, abort from models import * class UserAPI(Resource): def get(self, user_id): user = User.query.filter(User.id == user_id)[0] if user is None: abort(404, message="User {} doesn't exist".format(user_id)) else: return {'u…

Accepted Answer

After scanning the code I found that the `Resource` class inherits from the `MethodView` class of Flask. Well, finally I managed to get the `as_view` method by inheriting directly from the `MethodView` class instead of the `Resource` class. This is:

```
from app import api, db
from flask.ext.restful import abort
from flask.views import MethodView
from models import *

class UserAPI(MethodView):

def get(self, user_id):
         user = User.query.filter(User.id == user_id)[0]
         if user is None:
             abort(404, message="User {} doesn't exist".format(user_id))
         else:
             return {'user' : user}, 201

api.add_resource(UserAPI, '/api/v0.1/users/<int:user_id>', endpoint = 'user')
```

I hope someone finds this helpful.

Flask-Restful error: "as_view" method not inherited

Solution

Problem