python之无效的 block 标记 : 'keywords_for_order' , 预期 'endblock'

抱歉，我已经无计可施了。我有这个代码在本地工作，但是由于某种原因在服务器上当我尝试运行这个标签时我得到了一个错误，我不知道为什么。这是模板代码:

{% load blog_tags keyword_tags i18n future %} 
 
{% block blog_keywords %} 
{% keywords_for_order blog.blogpost as tags %} 
{% if tags %} 
<h3>{% trans "Tags" %}</h3> 
<ul class="unstyled tags"> 
{% for tag in tags %} 
<li> 
    <a href="{% url "blog_post_list_tag" tag.slug %}" 
        class="tag-weight-1">{{ tag }}</a> 
    ({{ tag.item_count }}) 
</li> 
{% endfor %} 
</ul> 
{% endif %} 
{% endblock %} 

这是 keyword_tags.py 文件:

from django.contrib.contenttypes.models import ContentType 
from django.db.models import Model, Count 
 
from mezzanine import template 
from mezzanine.conf import settings 
from mezzanine.generic.fields import KeywordsField 
from mezzanine.generic.models import AssignedKeyword, Keyword 
 
 
register = template.Library() 
 
@register.as_tag 
def keywords_for(*args): 
    """ 
    Return a list of ``Keyword`` objects for the given model instance 
    or a model class. In the case of a model class, retrieve all 
    keywords for all instances of the model and apply a ``weight`` 
    attribute that can be used to create a tag cloud. 
    """ 
 
    # Handle a model instance. 
    if isinstance(args[0], Model): 
        obj = args[0] 
        if hasattr(obj, "get_content_model"): 
            obj = obj.get_content_model() or obj 
        # There can only be one ``KeywordsField``, find it. 
        for field in obj._meta.many_to_many: 
            if isinstance(field, KeywordsField): 
                break 
        else: 
            return [] 
        keywords_manager = getattr(obj, field.name) 
        return [a.keyword for a in keywords_manager.select_related("keyword")] 
 
    # Handle a model class. 
    try: 
        app_label, model = args[0].split(".", 1) 
    except ValueError: 
        return [] 
 
    content_type = ContentType.objects.get(app_label=app_label, model=model) 
    assigned = AssignedKeyword.objects.filter(content_type=content_type) 
    keywords = Keyword.objects.filter(assignments__in=assigned) 
    keywords = keywords.annotate(item_count=Count("assignments")) 
    if not keywords: 
        return [] 
    settings.use_editable() 
    counts = [keyword.item_count for keyword in keywords] 
    min_count, max_count = min(counts), max(counts) 
    sizes = settings.TAG_CLOUD_SIZES 
    step = (max_count - min_count) / (sizes - 1) 
    if step == 0: 
        steps = [sizes / 2] 
    else: 
        steps = range(min_count, max_count, step)[:sizes] 
    for keyword in keywords: 
        c = keyword.item_count 
        diff = min([(abs(s - c), (s - c)) for s in steps])[1] 
        keyword.weight = steps.index(c + diff) + 1 
    return keywords 
 
 
 
@register.as_tag 
def keywords_for_order(*args): 
 
 
    # Handle a model instance. 
    if isinstance(args[0], Model): 
        obj = args[0] 
        if hasattr(obj, "get_content_model"): 
            obj = obj.get_content_model() or obj 
        # There can only be one ``KeywordsField``, find it. 
        for field in obj._meta.many_to_many: 
            if isinstance(field, KeywordsField): 
                break 
        else: 
            return [] 
        keywords_manager = getattr(obj, field.name) 
        return [a.keyword for a in keywords_manager.select_related("keyword")] 
 
    # Handle a model class. 
    try: 
        app_label, model = args[0].split(".", 1) 
    except ValueError: 
        return [] 
 
    content_type = ContentType.objects.get(app_label=app_label, model=model) 
    assigned = AssignedKeyword.objects.filter(content_type=content_type) 
    keywords = Keyword.objects.filter(assignments__in=assigned) 
    keywords = keywords.annotate(item_count=Count("assignments")).order_by('-item_count')[:2] 
    if not keywords: 
        return [] 
 
    return keywords 

这是我得到的错误:

Error during template rendering 
 
In template /home/USERNAME/webapps/lion_dev/lion/roar/templates/blog/includes/tagcloud_panel.html, error at line 4 
Invalid block tag: 'keywords_for_order', expected 'endblock' 
 
1   {% load blog_tags keyword_tags i18n future %} 
2    
3   {% block blog_keywords %} 
4   {% keywords_for_order blog.blogpost as tags %} 
5   {% if tags %} 
6   <h3>{% trans "Tags" %}</h3> 
7   <ul class="unstyled tags"> 
8   {% for tag in tags %} 
9   <li> 
10      <a href="{% url "blog_post_list_tag" tag.slug %}" 
11          class="tag-weight-1">{{ tag }}</a> 
12      ({{ tag.item_count }}) 
13  </li> 
14  {% endfor %} 

是的，我不知道为什么看不到这个模板标签文件。它也有一个 init.py 文件，所以不是那个。最好，感谢您的帮助，

jack

请您参考如下方法:

您是否直接在 Mezzanine 中编辑 keyword_tags.py 文件？

你不应该 - 所以如果你做了正确的事情并以某种方式将其复制到你的项目或应用程序中，那么加载的可能是夹层版本，而不是你的版本。尝试给它一个不同的名字，这样它们就不会发生冲突。