django - 是什么导致以下模板错误 'Invalid block tag: ' blocktrans', Expected 'elif' 、 'else' 或 'endif' ？

Question

这个问题已经有答案了:

Django: any use of blocktrans causes TemplateSyntaxError (2 个回答)

已关闭 10 年前。

什么原因导致以下模板错误？

In template /var/www/userreg/tagging/templates/registration/login.html, error at line 153

Invalid block tag: 'blocktrans', expected 'elif', 'else' or 'endif'
   143 : 
   144 : 
   145 :    <td>
   146 : 
   147 :    </td>
   148 : </tr>
   149 : </table>
   150 : </td>
   151 :    <td style="text-align:center;">
   152 :        {% if socialaccount.providers  %}
   153 : <p> {% blocktrans with site.name as site_name %} Please sign in with your
 existing acounts through  {% endblocktrans %}
   154 : 
   155 : <div class="socialaccount_ballot">
   156 : 
   157 :   <ul class="socialaccount_providers">
   158 :     {% include "socialaccount/snippets/provider_list.html" %}
   159 :   </ul>
   160 : 
   161 :   <div class="login-or">{% trans 'or' %}</div>
   162 :
   163 : </div>
Exception Type: TemplateSyntaxError at /accounts/login/
Exception Value: Invalid block tag: 'blocktrans', expected 'elif', 'else' or 'endif'

环境:

Request Method: GET
Django Version: 1.5
Python Version: 2.7.3

已安装的应用程序:

 ('django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admin',
 'registration',
 'django.contrib.humanize',
 'allauth',
 'allauth.account',
 'allauth.socialaccount',
 'allauth.socialaccount.providers.facebook',
 'allauth.socialaccount.providers.google',
 'allauth.socialaccount.providers.linkedin')

安装的中间件:

 ('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware')

我的模板

{% extends "base.html" %}

{% load i18n %}   
{% load account %}   
{% load url from future %}

{% block title %}Log in{% endblock %}

{% block content_header %}Log in{% endblock %}

{% block main_content %}    
    {% if socialaccount.providers  %}    
    <p> 
       {% blocktrans with site.name as site_name %}
       Please sign in with your existing acounts through     
       {% endblocktrans %}

       <div class="socialaccount_ballot"> 
          <ul class="socialaccount_providers">
          {% include "socialaccount/snippets/provider_list.html" %}    
          </ul>

          <div class="login-or">{% trans 'or' %}</div>  
       </div>

       {% include "socialaccount/snippets/login_extra.html" %}

       {% blocktrans %}    
       <a href="{{ signup_url }}">sign up</a> for a {{site_name}} account and sign in below:
       {% endblocktrans %}
    </p>   
    {% endif %}         
{% endblock %}

Answer 1

您定义的site_name位于:

{% blocktrans with site.name as site_name %}
    Please sign in with your existing acounts 
{% endblocktrans %}

你没有引用它的地方。

但是您在以下位置引用了 site_name:

{% blocktrans %}
    <a href="{{ signup_url }}">sign up</a> for a {{site_name}} account and sign in below:
{% endblocktrans %}

您没有在打开 blocktrans 标记时声明和定义 site_name。

正如我从您的回溯中看到的，django 没有提示，因此错误可能是从 socialaccount/snippets/provider_list.html 或 socialaccount/snippets/login_extra.html 发出的>.