django 'thumbnail' 不是有效的标签库 :

Question

我尝试过 django-filer 在单个文件字段中选择多个文件，只是我尝试了我的简单模型，但我面临着这个模板错误。我刚刚在 django admin 中使用了一个简单的模型。请你帮助我好吗？

class MyFile(models.Model):
     title = models.CharField(max_length=200)
     cover = FilerFileField(null=True,blank=True)


Environment:


 Request Method: GET
 Request URL: http://127.0.0.1:8000/filer/folder/?t=id&pop=1

 Django Version: 1.3.1
 Python Version: 2.6.5
 Installed Applications:
 ['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admin',
 'filer',
 'intelligence_centre']
  Installed Middleware:
  ('django.middleware.common.CommonMiddleware',
  'django.contrib.sessions.middleware.SessionMiddleware',
   'django.middleware.csrf.CsrfViewMiddleware',
   'django.contrib.auth.middleware.AuthenticationMiddleware',
   'django.contrib.messages.middleware.MessageMiddleware')


  Template error:
    In template /usr/local/lib/python2.6/dist-packages/filer/templates/admin/filer/tools/clipboard/clipboard.html, error at line 1
     'thumbnail' is not a valid tag library: Template library thumbnail not found, tried django.templatetags.thumbnail,django.contrib.admin.templatetags.thumbnail,filer.templatetags.thumbnail
      1 :  {% load thumbnail i18n %} 


  2 : {% for clipboard in user.filer_clipboards.all %}


  3 : <table style="width: 100%; border: 1px solid #DDDDDD;" class="clipboard">


  4 :     <thead>


  5 :         <tr><th colspan="3">{% trans "Clipboard" %}</th></tr>


  6 :     </thead>


  7 :     <tfoot>


  8 :         <tr>


  9 :             <td colspan="3">


         10 :                 <form action="{% url admin:filer-paste_clipboard_to_folder %}" method="post" style="display: inline;">


        11 :                     {% csrf_token %}

<小时/>

Traceback:File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/core/handlers/base.py" in get_response  111.                         response = callback(request, *callback_args, **callback_kwargs)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/utils/decorators.py" in _wrapped_view  93.                     response = view_func(request, *args, **kwargs)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/views/decorators/cache.py" in _wrapped_view_func  79.         response = view_func(request, *args, **kwargs)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/contrib/admin/sites.py" in inner  197.             return view(request, *args, **kwargs)File "/usr/local/lib/python2.6/dist-packages/filer/admin/folderadmin.py" in directory_listing  241.             }, context_instance=RequestContext(request))File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/shortcuts/__init__.py" in render_to_response  20.     return HttpResponse(loader.render_to_string(*args, **kwargs), **httpresponse_kwargs)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader.py" in render_to_string  181.         t = get_template(template_name)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader.py" in get_template  157.     template, origin = find_template(template_name)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader.py" in find_template  134.             source, display_name = loader(name, dirs)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader.py" in __call__  42.         return self.load_template(template_name, template_dirs)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader.py" in load_template  48.             template = get_template_from_string(source, origin, template_name)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader.py" in get_template_from_string  168.     return Template(source, origin, name)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/base.py" in __init__  108.         self.nodelist = compile_string(template_string, origin)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/base.py" in compile_string  136.     return parser.parse()File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/base.py" in parse  239.                     compiled_result = compile_func(self, token)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader_tags.py" in do_extends  214.     nodelist = parser.parse()File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/base.py" in parse  239.                     compiled_result = compile_func(self, token)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader_tags.py" in do_block  192.     nodelist = parser.parse(('endblock', 'endblock %s' % block_name))File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/base.py" in parse  239.                     compiled_result = compile_func(self, token)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader_tags.py" in do_include  261.                                    isolated_context=isolated_context)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader_tags.py" in __init__  149.             t = get_template(template_path)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader.py" in get_template  157.     template, origin = find_template(template_name)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader.py" in find_template  134.             source, display_name = loader(name, dirs)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader.py" in __call__  42.         return self.load_template(template_name, template_dirs)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader.py" in load_template  48.             template = get_template_from_string(source, origin, template_name)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/loader.py" in get_template_from_string  168.     return Template(source, origin, name)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/base.py" in __init__  108.         self.nodelist = compile_string(template_string, origin)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/base.py" in compile_string  136.     return parser.parse()File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/base.py" in parse  239.                     compiled_result = compile_func(self, token)File "/work/ws/intcen/venv/lib/python2.6/site-packages/django/template/defaulttags.py" in load  1054.                                           (taglib, e))Exception Type: TemplateSyntaxError at /filer/folder/Exception Value: 'thumbnail' is not a valid tag library: Template library thumbnail not found, tried django.templatetags.thumbnail,django.contrib.admin.templatetags.thumbnail,filer.templatetags.thumbnail 

<小时/>

Answer 1

似乎您想使用“easy_thumbnails”https://github.com/SmileyChris/easy-thumbnails这是 django-filer 的依赖项。

尝试在您的settings.py中添加应用程序:'easy_thumbnails'

查看变量:

THUMBNAIL_PROCESSORS = (
    'easy_thumbnails.processors.colorspace',
    'easy_thumbnails.processors.autocrop',
    #'easy_thumbnails.processors.scale_and_crop',
    'filer.thumbnail_processors.scale_and_crop_with_subject_location',
    'easy_thumbnails.processors.filters',
)

如此处安装段落中所述:https://github.com/stefanfoulis/django-filer