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)
我尝试同时使用GET和POST,但结果仍然相同:
location_list工作完美。
看起来请求总是空的
我的提交表格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>
我在做什么错了?
编辑1:
我尝试过:
@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:
编辑2:
我没有一个名为request
的函数,并且我没有很多其他函数(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
个文件。
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)]
追踪
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'
答案 0 :(得分:0)
所以我最终关闭了所有内容,重新启动计算机和python。我收到了另一个错误(某些行的缩进使用空格而不是TAB),但很容易修复,然后一切正常。
答案 1 :(得分:-1)
在您的locationName之前,放入if request.method == POST:
,然后在其下方选中所有内容。