【发布时间】：2019-04-12 11:33:53
【问题描述】：
这是代码：
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)
我尝试了 GET 和 POST，但仍然是相同的结果：
对象没有属性“数据”
对象没有属性'form'
location_list 完美运行。
看起来请求总是空的
我的提交表单html：
<!DOCTYPE html>
<html>
<head>
<title>Location Form</title>
<meta charset="utf-8" />
</head>
<body>
<form method="post" action="/post_location">
<label>Location name:</label>
<input id="location_name" name="location_name" type="text" />
<input type="submit" />
</form>
</body>
</html>
我做错了什么？
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'))
现在错误信息是：
'function'对象没有属性'method'
编辑 2：
我没有名为request 的函数，也没有很多其他函数（这是一个新项目）
不，我的任何项目文件夹中都没有任何 flask.py 文件。
编辑 3：Flask 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)]
追溯
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'
【问题讨论】：
-
您是否在某处定义了一个名为
request的函数？您的路径中是否有一个名为flask.py的文件？您如何初始化和运行 Flask 应用程序？做。你知道如何在调试模式下运行你的代码吗？这样做并检查request实际上是什么，因为听起来它实际上不是来自 Flask 的request代理。 -
或许发布您的完整代码会有所帮助。
-
我在问题中添加了完整代码，如何检查请求？代码已经在调试中
-
我承认我看不出代码有什么问题。你如何运行它？错误是如何报告的？你有追溯吗？ Flask 服务器是否启动？
-
哦，你的 HTML 中要写小写的 method="post"。
标签： python postgresql post flask request