blocks|key|386292|text|检查InlineModelAdmin.extra和InlineModelAdmin.max_num的文档。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|386293|我相信在你的例子中，max_num应该是1，extra是0。|style|CODE|386294|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.InlineModelAdmin.extra|1|https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.InlineModelAdmin.max_num^0|2|M|0|P|O|1|0|A|7|M|5|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]|$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@$A|Z|B|10|F|G]|$A|11|B|12|F|G]]|9|@]|C|$]]|$1|H|3|-4|5|6|7|13|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]]]

Check the docs for <a href="https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.InlineModelAdmin.extra" rel="noreferrer">InlineModelAdmin.extra</a> and <a href="https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.InlineModelAdmin.max_num" rel="noreferrer">InlineModelAdmin.max_num</a>.

I believe in your case <code>max_num</code> needs to be 1 and <code>extra</code> 0.

blocks|key|602360|text|额外=0|type|unstyled|depth|inlineStyleRanges|entityRanges|data|602361|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',+]|code-block|syntax|javascript|602362|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)：|602363|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+%2B+'_'+%2B+size+%2B+format
++++++++++++++++filename++++++++++++=+value.path
++++++++++++++++miniature_filename++=+os.path.join(filehead,+miniature)
++++++++++++++++filehead,+filetail++=+os.path.split(value.url)
++++++++++++++++miniature_url+++++++=+filehead+%2B+'/'+%2B+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="%25s"+target="_blank"><img+src="%25s"+alt="%25s"+/></a></div>+%25s+'+%25+\
++++++++++++++++(miniature_url,+miniature_url,+miniature_filename,+_('Change:')))
++++++++++++except:
++++++++++++++++pass
++++++++output.append(super(AdminFileWidget,+self).render(name,+value,+attrs))
++++++++return+mark_safe(u''.join(output))|602364|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。|602365|因此，您需要覆盖内联表单中的小部件：|602366|class+GalleryImageForm(forms.ModelForm):
++++"""
++++Image+Admin+Form
++++"""
++++class+Meta:
++++++++model+=+Image
++++++++widgets+=+{
++++++++++++'image'+:+AdminImageWidget,
++++++++}

class+GalleryImageInline(admin.TabularInline):
++++...
++++form+=+GalleryImageForm
++++...|602367|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)：|602368|📷|atomic|offset|length|602369|​|602370|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/db8df69db2e37fa5417a3de62fec4537.png|imageAlt^0|0|0|0|0|0|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|19|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|1A|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|1B|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|1C|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|1D|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|1E|8|@]|9|@]|A|$E|F]]|$1|Q|3|R|5|6|7|1F|8|@]|9|@]|A|$]]|$1|S|3|T|5|U|7|1G|8|@]|9|@$V|1H|W|1I|1|1J]]|A|$]]|$1|X|3|Y|5|6|7|1K|8|@]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]]|10|$11|$5|12|13|14|A|$15|16|17|-4]]]]

extra = 0

<pre><code>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', ]
</code></pre>

And in my opinion, for a inline that has images to be useful you need to actually display the image inline (so custom override the image widget):

<pre><code>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) &gt; 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' &lt;div&gt;&lt;a href="%s" target="_blank"&gt;&lt;img src="%s" alt="%s" /&gt;&lt;/a&gt;&lt;/div&gt; %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))
</code></pre>

Note: that this does some resizey stuff you may not like - so you may need to rewrite the thumb sizing part of the widget yourself.

so then you are going to need to override the widget in your inline's form:

<pre><code>class GalleryImageForm(forms.ModelForm):
 """
 Image Admin Form
 """
 class Meta:
 model = Image
 widgets = {
 'image' : AdminImageWidget,
 }

class GalleryImageInline(admin.TabularInline):
 ...
 form = GalleryImageForm
 ...
</code></pre>

and you end up with somethig like this (this is part of another project and has a bunch of extra stuff):
<img src="https://i.stack.imgur.com/VVi77.png" alt="screenshot of the image admin inline">

blocks|key|602414|text|如果您使用sorl-thumbnails，widget如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|602415|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
++++...|code-block|syntax|javascript|602416|entityMap|0|LINK|mutability|MUTABLE|url|http://sorl-thumbnail.readthedocs.org/^0|5|F|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

In case if you use <a href="http://sorl-thumbnail.readthedocs.org" rel="nofollow">sorl-thumbnails</a> , widget is like this:

<pre><code>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('&lt;img src="{}"&gt;'.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
 ...
</code></pre>

I'm using <code>django.contrib.admin</code> in one of my apps.

my models:

<pre><code>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')
</code></pre>

my <code>admin.py</code>:

<pre><code>class ImageInline(admin.StackedInline):
 model = Image

class GalleryAdmin(admin.ModelAdmin):
 inlines = [ ImageInline, ]
</code></pre>

In the admin section I'm now able to create a gallery and add images on the same page. By default django shows three image upload forms. How can I change it to only one?

How to show only one image in Django admin inline

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 ...

问如何在Django admin内联中只显示一个图像
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