似乎無法弄清楚如何在Flask中使用響應標頭

Question

嘿傢伙idk爲什麼我的代碼不工作。我忘了大部分的東西約響應頭以及如何使用它，我吸在搞清楚什麼時候，當運行此代碼我碰到下面的錯誤使用字典和元組等

from flask import Flask, jsonify, json, request, abort 
from flask_sqlalchemy import SQLAlchemy 

app = Flask(__name__) 
app.config.from_pyfile('Config.py') 
db = SQLAlchemy(app) 
response = {} 

class JsonModel(object): #Class for making objects JSON serializable 
    def as_dict(self): 
     return {c.name: getattr(self, c.name) for c in self.__table__.columns} 

class User(db.Model, JsonModel): #Class which is a model for the User table in the database 
    User_ID = db.Column(db.Integer, primary_key = True) 
    FirstName = db.Column(db.String(20)) 
    LastName = db.Column(db.String(20)) 

def __init__(self,User_ID,FirstName, LastName): 
    self.User_ID = User_ID 
    self.FirstName = FirstName 
    self.LastName = LastName 

class Todo(db.Model, JsonModel): #Class which is a model for the Todo table in the database 
    todo_ID = db.Column(db.Integer, primary_key = True) 
    UserID = db.Column(db.Integer, db.ForeignKey("user.User_ID")) 
    details = db.Column(db.String(30)) 

def __init__(self, UserID, details): 
    self.UserID = UserID 
    self.details = details 

@app.route('/todo', methods = ['GET']) #Uses GET method to return all information in the database. 
def index(): 
    return json.dumps([u.as_dict() for u in Todo.query.all()]) 

@app.route('/todo/<int:todo_ID>', methods = ['GET']) 
def get(todo_ID): 
    todo = Todo.query.get(todo_ID) 
    response 
    response['todo_ID']= todo.todo_ID 
    response['UserID'] = todo.UserID 
    response['details'] = todo.details 
    response.status_code = 200 
    response.headers['location'] = '/todo/{}'.format(todo.todo_ID) 
    return response 

。

File "/home/muba/PycharmProjects/Work/Flaskapp.py", line 43, in get 
    response.status_code = 200 
AttributeError: 'dict' object has no attribute 'status_code' 
127.0.0.1 - - [01/Mar/2017 21:29:27] "GET /todo/1 HTTP/1.1" 500 - 

有人可以告訴我什麼是錯的，也可以指向某種教程。只有我可以理解的是，由於某種原因，我頂部的響應對象不能使用status_code。

Answer 1

假設您希望返回JSON格式的todo對象;下面是使用JSON對象和額外頭文件構造響應的簡化示例。

app.py

from flask import Flask, make_response 
import json 

app = Flask(__name__) 

    @app.route("/", methods=['GET']) 
    def index(): 

    todo = {'todo_ID': 1, 'UserID': 2, 'details': 'test'} 
    r = make_response((json.dumps(todo), 
         200, 
         {'Content-Type': 'application/json', 
         'location': '/todo/{}'.format(todo['todo_ID'])})) 
    return r 


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

捲曲響應：

HTTP/1.0 200 OK 
Content-Type: application/json 
Location: http://localhost:5000/todo/1 
Content-Length: 46 
Server: Werkzeug/0.10.4 Python/2.7.13 
Date: Wed, 01 Mar 2017 09:09:11 GMT 


* Closing connection 0 
{"UserID": 2, "details": "test", "todo_ID": 1}