Flask请求对象始终为空（GET和POST）

Question

代码如下：

from flask import Flask
from flask import request, redirect, url_for, render_template
from flask_sqlalchemy import SQLAlchemy

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'postgresql://postgres:root@localhost/gradelink'
db = SQLAlchemy(app)

class Location(db.Model):
    __tablename__ = 'location'
    id = db.Column('id', db.Integer, primary_key=True)
    location_name = db.Column('location_name', db.String(250), unique=True)

    def __init__(self, location_name):
        self.location_name = location_name

    def __repr__(self):
        return '<Location %r' % self.location_name

@app.route('/')
def index():
    return render_template('home.html');

@app.route('/location', methods=['GET', 'POST'])
def location():
    return render_template('location.html');

@app.route('/post_location', methods=['POST'])
def post_location():
    if request.method == "POST":
        location_n = request.form['location_name']

    return redirect(url_for('index'))

@app.route('/location_list', methods=['GET', 'POST'])
def location_list():
    locationList = Location.query.all()
    return render_template('location_list.html', locationList=locationList);

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

我试过同时使用GET和POST，但结果还是一样：

对象没有属性“data”

对象没有属性“form”

位置列表非常有效。

看起来请求总是空的

我的提交表单html:

^{pr2}$

我做错什么了？在

编辑1：

我试过了：

@app.route('/post_location', methods=['POST'])
def post_location():
    if request.method == "POST":
        location_n = request.form['location_name']

    return redirect(url_for('index'))

现在错误消息是：

“function”对象没有属性“method”

编辑2：

我没有一个名为request的函数，也没有很多其他函数（这是一个新的新项目）

不，我的任何项目文件夹中都没有flask.py文件。在

编辑3：烧瓶和Python版本

C:\Users\Daniel>flask --version
Flask 1.0.2
Python 3.7.1 (v3.7.1:260ec2c36a, Oct 20 2018, 14:57:15) [MSC v.1915 64 bit (AMD64)]

回溯

builtins.AttributeError
AttributeError: 'function' object has no attribute 'method'

Traceback (most recent call last)
File "C:\Users\Daniel\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 2309, in __call__
return self.wsgi_app(environ, start_response)
File "C:\Users\Daniel\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 2295, in wsgi_app
response = self.handle_exception(e)
File "C:\Users\Daniel\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 1741, in handle_exception
reraise(exc_type, exc_value, tb)
File "C:\Users\Daniel\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\_compat.py", line 35, in reraise
raise value
File "C:\Users\Daniel\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 2292, in wsgi_app
response = self.full_dispatch_request()
File "C:\Users\Daniel\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 1815, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Users\Daniel\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 1718, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "C:\Users\Daniel\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\_compat.py", line 35, in reraise
raise value
File "C:\Users\Daniel\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 1813, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Users\Daniel\AppData\Local\Programs\Python\Python37\lib\site-packages\flask\app.py", line 1799, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "C:\myproject\flask\__init__.py", line 89, in post_location
if request.method == "POST":
AttributeError: 'function' object has no attribute 'method'

Answer 1

在你的位置名之前，把if request.method == POST:放进去，然后在下面加上标签。在

Answer 2

所以我关闭了所有的东西，重新启动了我的电脑和python。我收到了一个不同的错误（有些行有空格而不是制表符缩进），但很容易修复，然后一切都很好。在