如何在Django admin内联中只显示一个图像
如何在Django admin内联中只显示一个图像
提问于 2012-04-06 22:44:14
我正在我的一个应用程序中使用django.contrib.admin。
我的模型：
class Gallery(models.Model):
location = models.ForeignKey(Location)
date = models.CharField(max_length = 15)
class Image(models.Model):
gallery = models.ForeignKey(Gallery)
name = models.CharField(max_length=35)
image = ImageField(upload_to='songs')我的admin.py
class ImageInline(admin.StackedInline):
model = Image
class GalleryAdmin(admin.ModelAdmin):
inlines = [ ImageInline, ]在管理部分，我现在可以创建一个画廊，并在同一页上添加图像。默认情况下，django会显示三个图片上传表单。我怎么才能把它改成只有一个？
回答 3
Stack Overflow用户
回答已采纳
发布于 2012-04-06 22:50:12
检查InlineModelAdmin.extra和InlineModelAdmin.max_num的文档。
我相信在你的例子中，max_num应该是1，extra是0。
Stack Overflow用户
发布于 2012-04-07 00:12:59
额外=0
class GalleryImageInline(admin.TabularInline):
"""
Gallery Image inline
"""
fieldsets = (
(
None,
{
'fields': ('name', 'image',)
}
),
)
model = Image
extra = 0
class GalleryAdmin(admin.ModelAdmin):
"""
Case Study Admin
"""
fieldsets = (
(
None,
{
'fields': ('location', 'date',)
}
),
)
inlines = (GalleryImageInline, )
list_display = ['location', 'date']
list_filter = ['location', ]在我看来，对于具有有用图像的内联，您需要实际显示图像内联(因此自定义覆盖图像小部件)：
from django.contrib.admin.widgets import AdminFileWidget
from django.utils.translation import ugettext as _
from django.utils.safestring import mark_safe
import os
import Image
class AdminImageWidget(AdminFileWidget):
def render(self, name, value, attrs=None):
output = []
if value and getattr(value, "url", None):
image_url = value.url
file_name=str(value)
# defining the size
size='100x100'
x, y = [int(x) for x in size.split('x')]
try :
# defining the filename and the miniature filename
filehead, filetail = os.path.split(value.path)
basename, format = os.path.splitext(filetail)
miniature = basename + '_' + size + format
filename = value.path
miniature_filename = os.path.join(filehead, miniature)
filehead, filetail = os.path.split(value.url)
miniature_url = filehead + '/' + miniature
# make sure that the thumbnail is a version of the current original sized image
if os.path.exists(miniature_filename) and os.path.getmtime(filename) > os.path.getmtime(miniature_filename):
os.unlink(miniature_filename)
# if the image wasn't already resized, resize it
if not os.path.exists(miniature_filename):
image = Image.open(filename)
image.thumbnail([x, y], Image.ANTIALIAS)
try:
image.save(miniature_filename, image.format, quality=100, optimize=1)
except:
image.save(miniature_filename, image.format, quality=100)
output.append(u' <div><a href="%s" target="_blank"><img src="%s" alt="%s" /></a></div> %s ' % \
(miniature_url, miniature_url, miniature_filename, _('Change:')))
except:
pass
output.append(super(AdminFileWidget, self).render(name, value, attrs))
return mark_safe(u''.join(output))注意:这做了一些你可能不喜欢的事情-所以你可能需要自己重写小部件的拇指大小部分。
因此，您需要覆盖内联表单中的小部件：
class GalleryImageForm(forms.ModelForm):
"""
Image Admin Form
"""
class Meta:
model = Image
widgets = {
'image' : AdminImageWidget,
}
class GalleryImageInline(admin.TabularInline):
...
form = GalleryImageForm
...你最终会得到类似这样的东西(这是另一个项目的一部分，有一堆额外的东西)：
Stack Overflow用户
发布于 2013-11-08 21:49:32
如果您使用sorl-thumbnails，widget如下所示：
from django.contrib.admin.widgets import AdminFileWidget
from django.utils.safestring import mark_safe
from sorl import thumbnail
class AdminImageWidget(AdminFileWidget):
def render(self, name, value, attrs=None):
output = []
if value and getattr(value, "url", None):
t = thumbnail.get_thumbnail(value,'100x100')
output.append('<img src="{}">'.format(t.url))
output.append(super(AdminFileWidget, self).render(name, value, attrs))
return mark_safe(u''.join(output))
class GalleryImageForm(forms.ModelForm):
"""
Image Admin Form
"""
class Meta:
model = Image
widgets = {
'image' : AdminImageWidget,
}
class GalleryImageInline(admin.TabularInline):
...
form = GalleryImageForm
...页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/10045064
复制相关文章
相似问题
腾讯云开发者
