Question

当我尝试在flask中使用redirect和url_for函数时，我得到一个重定向循环，如下所示：

@app.route('/edit/<id>' , methods=['POST', 'GET'])
def edit (id):
#Getting user by primary key:
post = Post.query.get(id)
if request.method == 'POST':        
    post.title = request.form['title']
    post.text =  request.form['text']
    db.session.commit()
    flash('New entry was successfully posted')     

return redirect(url_for('edit',  id=id, post=post))

更新：已解决http://techarena51.com/index.php/flask-sqlalchemy-tutorial/

Answer 1

我认为如果用户提交了POST请求，您只想重定向？我认为你的代码应该是：

@app.route('/edit/<id>' , methods=['POST', 'GET'])
def edit (id):
#Getting user by primary key:
post = Post.query.get(id)
if request.method == 'POST':        
    post.title = request.form['title']
    post.text =  request.form['text']
    db.session.commit()
    flash('New entry was successfully posted')     
    return redirect(url_for('edit',  id=id, post=post))

# The rest of this code is executed when a GET is performed
return render_template("edit.html",id=id, post=post)

否则，是的，每当访问时，您当前的代码将重定向到相同的路由。我已经更新了我的示例，以显示在请求方法不是POST时如何呈现编辑模板。

使用带有flask中参数的url_for函数时重定向循环

1 个答案: