將圖像顯示爲縮略圖

Question

我想將我上傳的圖像作爲縮略圖顯示在我的模板中。我已在我安裝的應用程序中安裝了sorl-thumbnail。當我正在執行我的應用程序時，我得到如下模板錯誤：

語法錯誤。預期：thumbnail source geometry [key1=val1 key2=val2...] as var 異常位置：/usr/local/lib/python2.7/dist-packages/sorl_thumbnail-11.12 py2.7.egg/SORL /縮略圖/ templatetags/thumbnail.py在初始化 65行

請幫我找到解決辦法。我的代碼如下

class Photo(models.Model): 
    image = models.ImageField(upload_to='/home/forent/sites1/dreamaddress/media/uploads/properties/image') 
    tag=models.CharField(max_length=255, null=True,blank=True) 
    caption=models.CharField(max_length=755, null=True,blank=True) 
    prop=models.ForeignKey(Property,blank=True,null=True) 

查看：

def img_all(request): 
    imgs = Photo.objects.all() 
    return render_to_response('details.html',{'imgs':imgs},context_instance=RequestContext(request)) 

settings.py

# Django settings for dreamaddress project. 

DEBUG = True 
TEMPLATE_DEBUG = DEBUG 
AUTH_PROFILE_MODULE = 'properties.UserProfile' 

ADMINS = (
    # ('Your Name', 'your_email@example.com'), 
) 

MANAGERS = ADMINS 

DATABASES = { 
    'default': { 
     'ENGINE': 'django.db.backends.sqlite3', # Add 'postgresql_psycopg2', 'postgresql', 'mysql', 'sqlite3' or 'oracle'. 
     'NAME': 'dreamaddress',      # Or path to database file if using sqlite3. 
     'USER': '',      # Not used with sqlite3. 
     'PASSWORD': '',     # Not used with sqlite3. 
     'HOST': '',      # Set to empty string for localhost. Not used with sqlite3. 
     'PORT': '',      # Set to empty string for default. Not used with sqlite3. 
    } 
} 

# Local time zone for this installation. Choices can be found here: 
# http://en.wikipedia.org/wiki/List_of_tz_zones_by_name 
# although not all choices may be available on all operating systems. 
# On Unix systems, a value of None will cause Django to use the same 
# timezone as the operating system. 
# If running in a Windows environment this must be set to the same as your 
# system time zone. 
TIME_ZONE = 'America/Chicago' 

# Language code for this installation. All choices can be found here: 
# http://www.i18nguy.com/unicode/language-identifiers.html 
LANGUAGE_CODE = 'en-us' 

SITE_ID = 1 

# If you set this to False, Django will make some optimizations so as not 
# to load the internationalization machinery. 
USE_I18N = True 

# If you set this to False, Django will not format dates, numbers and 
# calendars according to the current locale 
USE_L10N = True 

# Absolute filesystem path to the directory that will hold user-uploaded files. 
# Example: "/home/media/media.lawrence.com/media/" 
MEDIA_ROOT ='/home/forent/sites1/dreamaddress/media/' 




# URL that handles the media served from MEDIA_ROOT. Make sure to use a 
# trailing slash. 
# Examples: "http://media.lawrence.com/media/", "http://example.com/media/" 
MEDIA_URL = '/media/' 

# Absolute path to the directory static files should be collected to. 
# Don't put anything in this directory yourself; store your static files 
# in apps' "static/" subdirectories and in STATICFILES_DIRS. 
# Example: "/home/media/media.lawrence.com/static/" 
STATIC_ROOT = '/home/forent/sites1/dreamaddress/sitestatic/' 

# URL prefix for static files. 
# Example: "http://media.lawrence.com/static/" 
STATIC_URL = '/sitestatic/' 

# URL prefix for admin static files -- CSS, JavaScript and images. 
# Make sure to use a trailing slash. 
# Examples: "http://foo.com/static/admin/", "/static/admin/". 
ADMIN_MEDIA_PREFIX = '/static/admin/' 

# Additional locations of static files 
STATICFILES_DIRS = (
    # Put strings here, like "/home/html/static" or "C:/www/django/static". 
    # Always use forward slashes, even on Windows. 
    # Don't forget to use absolute paths, not relative paths. 
    '/home/forent/sites1/dreamaddress/properties/static/', 
) 

# List of finder classes that know how to find static files in 
# various locations. 
STATICFILES_FINDERS = (
    'django.contrib.staticfiles.finders.FileSystemFinder', 
    'django.contrib.staticfiles.finders.AppDirectoriesFinder', 
# 'django.contrib.staticfiles.finders.DefaultStorageFinder', 
) 

# Make this unique, and don't share it with anybody. 
SECRET_KEY = 'gl=@6g+m6yw_j8-ybqme0-3w+iz81ib185twqh9-l%m32a6=_j' 

# List of callables that know how to import templates from various sources. 
TEMPLATE_LOADERS = (
    'django.template.loaders.filesystem.Loader', 
    'django.template.loaders.app_directories.Loader', 
#  'django.template.loaders.eggs.Loader', 
) 

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

ROOT_URLCONF = 'dreamaddress.urls' 

TEMPLATE_DIRS = (
    # Put strings here, like "/home/html/django_templates" or "C:/www/django/templates". 
    # Always use forward slashes, even on Windows. 
    # Don't forget to use absolute paths, not relative paths. 
    '/home/forent/sites1/dreamaddress/template/' 
) 

INSTALLED_APPS = (
    'django.contrib.auth', 
    'django.contrib.contenttypes', 
    'django.contrib.sessions', 
    'django.contrib.sites', 
    'django.contrib.messages', 
    'django.contrib.staticfiles', 
    'django.contrib.admin', 
    'properties', 
    'south', 
    'sorl.thumbnail', 
    # Uncomment the next line to enable the admin: 
    # 'django.contrib.admin', 
    # Uncomment the next line to enable admin documentation: 
    # 'django.contrib.admindocs', 
) 

# A sample logging configuration. The only tangible logging 
# performed by this configuration is to send an email to 
# the site admins on every HTTP 500 error. 
# See http://docs.djangoproject.com/en/dev/topics/logging for 
# more details on how to customize your logging configuration. 
LOGGING = { 
    'version': 1, 
    'disable_existing_loggers': False, 
    'handlers': { 
     'mail_admins': { 
      'level': 'ERROR', 
      'class': 'django.utils.log.AdminEmailHandler' 
     } 
    }, 
    'loggers': { 
     'django.request': { 
      'handlers': ['mail_admins'], 
      'level': 'ERROR', 
      'propagate': True, 
     }, 
    } 
} 

details.html：

{% load thumbnail %} 
         <div> 

           {% for img in imgs %} 
        <div class="slide"> 
         <a href="#"><li><img src="{% thumbnail img.image 480x312 crop,sharpen,quality=90 %}" alt=""></li></a> 
       <div class="caption" style="bottom:0"> 
       <p>{{ img.caption }}</p> 
       </div> 
    {% endfor %} 
</div> 

Answer 1

Look at the example in the docs

你需要引用您的幾何值：

<img src="{% thumbnail img.image '480x312' crop="center" quality="90" %}" alt="">