Flask：TypeError，无法传递参数

我在制作动态URI的时候需要传递参数。当我尝试传递一个参数时，出现了类型错误消息。它一直说我传递了0个参数。我找不到问题。Flask：TypeError，无法传递参数

这是views.py

@app.route('/delete_todo/<int:todo_id>', methods=['POST']) 
@login_required 
def delete_todo(todo_id): 
    if request.form['todo_id']: 
     g.db.execute('''delete * from todo where todo_id = ?''', request.form['todo_id']) 
     g.db.commit() 
     flash('Your message was deleted') 
    return redirect(url_for('index'))

范本中应该经过论证

{% for todo in todo %}  
<form action="{{ url_for('delete_todo', todo_id=todo.todo_id) }}" method="post"> 
     <input type="hidden" name="todo_id" value="{{ todo.todo_id }}"> 
     <input type="submit" value="Delete"> 
</form> 
{% else %} 
{% endfor %}

这是错误消息。

TypeError 
TypeError: _wrapped_view() takes at least 1 argument (0 given) 

Traceback (most recent call last) 
File "C:\Python27\lib\site-packages\flask\app.py", line 1994, in __call__ 
return self.wsgi_app(environ, start_response) 
File "C:\Python27\lib\site-packages\flask\app.py", line 1985, in wsgi_app 
response = self.handle_exception(e) 
File "C:\Python27\lib\site-packages\flask\app.py", line 1540, in handle_exception 
reraise(exc_type, exc_value, tb) 
File "C:\Python27\lib\site-packages\flask\app.py", line 1982, in wsgi_app 
response = self.full_dispatch_request() 
File "C:\Python27\lib\site-packages\flask\app.py", line 1614, in full_dispatch_request 
rv = self.handle_user_exception(e) 
File "C:\Python27\lib\site-packages\flask\app.py", line 1517, in handle_user_exception 
reraise(exc_type, exc_value, tb) 
File "C:\Python27\lib\site-packages\flask\app.py", line 1612, in full_dispatch_request 
rv = self.dispatch_request() 
File "C:\Python27\lib\site-packages\flask\app.py", line 1598, in dispatch_request 
return self.view_functions[rule.endpoint](**req.view_args) 
TypeError: _wrapped_view() takes at least 1 argument (0 given) 
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来源

2017-03-02 camila

为什么在使用'POST'方法时在URL中传递参数？ – stamaimer

已经可以从request.form ['todo_id']''todo_id''为什么使用动态url？ – metmirr

todo_id已经通过表单发送，因此您不需要将它作为参数在url中发送。另外不要忘记将字符串todo_id转换为int

@app.route('/delete_todo', methods=['POST']) 
@login_required 
def delete_todo(): 
    if request.form['todo_id']: 
     g.db.execute('''delete * from todo where todo_id = ?''',int(request.form['todo_id'])) 
     g.db.commit() 
     flash('Your message was deleted') 
    return redirect(url_for('index'))

来源

2017-03-02 10:38:01

Flask：TypeError，无法传递参数

回答

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