Question

我有一个页面/contact.html。它有一个按钮，当提交时我带到用户登录的第二页（algo.html）。在这第二页我有两个按钮，但我无法得到回应。这是我的代码：

@app.route('/contact', methods = ['GET', 'POST'])
def contact():
    form = ContactForm()

    if request.method == 'POST':
        return render_template('algo.html')
    if request.method == 'POST' and request.form['submit'] == 'swipeleft':
        print "yes"

在contact.html上我有：

<form action="{{ url_for('contact') }}" method=post> 
{{ form.hidden_tag() }}
{{ form.name.label }}
{{ form.name }}
{{ form.submit }}

在algo.html上我有：

<input type = "submit" name = "submit" value = "swipeleft" method=post>
<input type = "submit" name = "submit" value = "swiperight" method=post>

Answer 1

在您的algo.html模板中，您需要将表单提交回同一网址/contact，因为您正在检查swipeleft的值：

<form action="{{ url_for('contact') }}" method="post">
   <input type = "submit" name = "submit" value = "swipeleft" />
   <input type = "submit" name = "submit" value = "swiperight" />
</form>

Answer 2

我想你的问题就在这里：

if request.method == 'POST':
    return render_template('algo.html')
if request.method == 'POST' and request.form['submit'] == 'swipeleft':
    print "yes"

对于第一个if语句，它将始终返回True，并且该函数将返回呈现的模板。它永远不会检查第二个if语句。

只需切换位置，以便检查POST请求以及表单是否已提交。

if request.method == 'POST' and request.form['submit'] == 'swipeleft':
    print "yes"
if request.method == 'POST':
    return render_template('algo.html')

或

if request.method == 'POST':
    if request.form['submit'] == 'swipeleft':
         print "yes"

    return render_template('algo.html')

编辑：你在这里犯了一个严重的错误：

<input type = "submit" name = "submit" value = "swipeleft" method=post>

将其更改为：

<form method="post" action="URL" > # change URL to your view url.
    <input type="submit" name="swipeleft" value ="swipeleft">
</form>

现在在您看来，请执行以下操作：

if request.method == 'POST' and request.form['swipeleft']:

Answer 3

试一试：

if request.method == 'POST':
    if request.form.get('submit') == 'swipeleft':
        print "first part"
    elif request.form.get('submit') == 'swiperight':
        print "second part"
    return render_template('algo.html')

Flask Python按钮无响应

3 个答案: