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我在用django.contrib.admin
在我的应用程序里。
我的models:
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图库并在同一个页面上添加图像。默认情况下,Django显示三个图像上传表单。我怎么才能把它改成一个呢?
extra = 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,如果内联中的图像是有用的,则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调整大小的事情--所以你可能需要自己重写小部件的拇指大小部分。
因此,需要以内联的形式覆盖小部件:
class GalleryImageForm(forms.ModelForm): """ Image Admin Form """ class Meta: model = Image widgets = { 'image' : AdminImageWidget, } class GalleryImageInline(admin.TabularInline): ... form = GalleryImageForm ...
你最终会得到这样的东西(这是另一个项目的一部分,还有很多额外的东西):