如何在我的页面上嵌入Flask-Security登录表单？ [英] How do I embed a Flask-Security login form on my page?

问题描述

使用Flask-Security提供的示例代码，我可以从 / login 访问 login_user.html >正常路线，工作得很好。不过，我想将登录表单嵌入到我左侧所有网站的页面中。我想我可以使用Jinja {％includesecurity / login_user.html％} 语句将表单放置在 base.html ，但似乎没有工作。我得到以下错误：

pre $ jinja2.exceptions.UndefinedError：'login_user_form'是未定义的
$ b

$ b

解决方案 security / login_user.html 是登录表单的完整页面模板。这不是你想要在每个页面上嵌入，因为它处理其他事情，如刷新的消息，错误和布局。

编写自己的模板来呈现表单并将 包含进来，或者将其添加到您的基本模板中。 < form action ={{url_for_security（'login'）}}method =POST>
{{login_user_form.hidden_​​tag（）}}
{{login_user_form.email（placeholder ='Email'）}}
{{login_user_form.password（placeholder ='Password'）}}
{{login_user_form.remember.label}} {{login_user_form.remember}}
{{login_user_form.submit}}
< / form>

<sup>（这只是一个例子，您需要将其设置为适合您的页面）

没有任何视图会直接处理登录表单，所以 login_form 和 url_for_security 在渲染大多数模板时不可用（这是导致您观察到的原始问题）。使用 app.context_processor 。注入每个请求。</sup>

  from flask_security import LoginForm，url_for_security 
 $ b @ app.context_processor 
 def login_context（）：
 return {
'url_for_security'：url_for_security，$ b $'login_user_form'：LoginForm ），
} 
  

Using the example code provided by Flask-Security, I can access the login_user.html form from the /login route normally and that works just fine. However, I would like to embed the login form on all my site's pages in the upper left. I thought I could use a Jinja {% include "security/login_user.html" %} statement to place the form in base.html, but that doesn't seem to work. I get the following error:

jinja2.exceptions.UndefinedError: 'login_user_form' is undefined

Is there a way to include or embed the login form inside another template and still get access to the respective form object?

解决方案

security/login_user.html is the full page template for the login form. It's not what you would want to embed on each page because it deals with other things like flashed messages, errors, and layout.

Write your own template to render just the form and include that, or add it to your base template.

<form action="{{ url_for_security('login') }}" method="POST">
  {{ login_user_form.hidden_tag() }}
  {{ login_user_form.email(placeholder='Email') }}
  {{ login_user_form.password(placeholder='Password') }}
  {{ login_user_form.remember.label }} {{ login_user_form.remember }}
  {{ login_user_form.submit }}
</form>

^{(This is just an example, you'll want to style it to fit your page.)}

None of your views will deal with the login form directly, so login_form and url_for_security aren't available while rendering most templates (this was causing the original issue you observed). Inject them for each request using app.context_processor.

from flask_security import LoginForm, url_for_security

@app.context_processor
def login_context():
    return {
        'url_for_security': url_for_security,
        'login_user_form': LoginForm(),
    }

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