from flask import Flask, request
from flask_restplus import Resource, Api

app = Flask(__name__)
api = Api(app)

todos = {}

@api.route('/<string:todo_id>')
class TodoSimple(Resource):
    def get(self, todo_id):
        return {todo_id: todos[todo_id]}

    def put(self, todo_id):
        todos[todo_id] = request.form['data']
        return {todo_id: todos[todo_id]}

if __name__ == '__main__':
    app.run(debug=True)

from flask import Flask
from flask_restplus import Api, Resource, fields
from werkzeug.contrib.fixers import ProxyFix

app = Flask(__name__)
app.wsgi_app = ProxyFix(app.wsgi_app)

api = Api(app, version='1.0', title='TodoMVC API',
    description='A simple TodoMVC API',
)

# 定义命名空间
ns = api.namespace('todos', description='TODO operations')

todo = api.model('Todo', {
    'id': fields.Integer(readOnly=True, description='The task unique identifier'),
    'task': fields.String(required=True, description='The task details')
})

# DAO
class TodoDAO(object):
    def __init__(self):
        self.counter = 0
        self.todos = []

    def get(self, id):
        for todo in self.todos:
            if todo['id'] == id:
                return todo
        api.abort(404, "Todo {} doesn't exist".format(id))

    def create(self, data):
        todo = data
        todo['id'] = self.counter = self.counter + 1
        self.todos.append(todo)
        return todo

    def update(self, id, data):
        todo = self.get(id)
        todo.update(data)
        return todo

    def delete(self, id):
        todo = self.get(id)
        self.todos.remove(todo)


DAO = TodoDAO()
DAO.create({'task': 'Build an API'})
DAO.create({'task': '?????'})
DAO.create({'task': 'profit!'})

# 对 all todo 操作
@ns.route('/')
class TodoList(Resource):
    '''获取所有todos元素，并允许通过POST来添加新的task'''
    @ns.doc('list_todos')
    @ns.marshal_list_with(todo)
    def get(self):
        '''返回所有task'''
        return DAO.todos

    @ns.doc('create_todo')
    @ns.expect(todo)
    @ns.marshal_with(todo, code=201)
    def post(self):
        '''创建一个新的task'''
        return DAO.create(api.payload), 201

# 对其中 某个id 的 实体 操作
@ns.route('/<int:id>')
@ns.response(404, 'Todo not found')
@ns.param('id', 'The task identifier')
class Todo(Resource):
    '''获取单个todo项，并允许删除操作'''
    @ns.doc('get_todo')
    @ns.marshal_with(todo)
    def get(self, id):
        '''获取id指定的todo项'''
        return DAO.get(id)

    @ns.doc('delete_todo')
    @ns.response(204, 'Todo deleted')
    def delete(self, id):
        '''根据id删除对应的task'''
        DAO.delete(id)
        return '', 204

    @ns.expect(todo)
    @ns.marshal_with(todo)
    def put(self, id):
        '''更新id指定的task'''
        return DAO.update(id, api.payload)


if __name__ == '__main__':
    app.run(debug=True)