- Author:
- baumer1122
- Posted:
- July 31, 2008
- Language:
- Python
- Version:
- .96
- Score:
- 10 (after 10 ratings)
A FileField Widget that displays an image instead of a file path if the current file is an image. Could also be used with sorl.thumbnail to generate thumbnail images.
Example
class FileUploadForm(forms.ModelForm):
upload = forms.FileField(widget=AdminThumbnailWidget)
class Meta:
model = FileUpload
class FileUploadAdmin(admin.ModelAdmin):
form = FileUploadForm
admin.site.register(FileUpload, FileUploadAdmin)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | from django.contrib.admin.widgets import AdminFileWidget
from django.utils.translation import ugettext as _
from django.utils.safestring import mark_safe
from django.conf import settings
from PIL import Image
import os
try:
from sorl.thumbnail.main import DjangoThumbnail
def thumbnail(image_path):
t = DjangoThumbnail(relative_source=image_path, requested_size=(200,200))
return u'<img src="%s" alt="%s" />' % (t.absolute_url, image_path)
except ImportError:
def thumbnail(image_path):
absolute_url = os.path.join(settings.MEDIA_ROOT, image_path)
return u'<img src="%s" alt="%s" />' % (absolute_url, image_path)
class AdminImageWidget(AdminFileWidget):
"""
A FileField Widget that displays an image instead of a file path
if the current file is an image.
"""
def render(self, name, value, attrs=None):
output = []
file_name = str(value)
if file_name:
file_path = '%s%s' % (settings.MEDIA_URL, file_name)
try: # is image
Image.open(os.path.join(settings.MEDIA_ROOT, file_name))
output.append('<a target="_blank" href="%s">%s</a><br />%s <a target="_blank" href="%s">%s</a><br />%s ' % \
(file_path, thumbnail(file_name), _('Currently:'), file_path, file_name, _('Change:')))
except IOError: # not image
output.append('%s <a target="_blank" href="%s">%s</a> <br />%s ' % \
(_('Currently:'), file_path, file_name, _('Change:')))
output.append(super(AdminFileWidget, self).render(name, value, attrs))
return mark_safe(u''.join(output))
|
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Comments
thank you!
#
I've made changes, now it's with thumbnail produces by sorl-thumbnail
#
updated for filestorage refactor and will use sorl.thumbnail if it is available
#
Works great! Thanks for this.
One thing: Your example references "AdminThumbnailWidget" when it should be "AdminImageWidget".
#
Hi, how ill use it? where save this code?
Thanks
#
Line 15 in render: absolute_url = os.path.join(settings.MEDIA_ROOT, image_path
It is MEDIA_URL. You don't want to have src="/home/media/../pamela.jpg".
Regards.
#
Hey, really cool, but i'm missing one simple thing.. Where do i have to save this code? I mean how do i add a custom widget? I've been browsing the documentation but still couldn't understand this little simple thing. I noticed widgets are stored in "site-packages/django/contrib/admin/widgets.py" but really, i guessed i don't have to edit that file but create another one somewhere in my project directory. Am I right? It's driving me mad! Help
#
Hi
class FileUploadForm(forms.ModelForm):
upload = forms.FileField(widget=AdminThumbnailWidget)
should be
class FileUploadForm(forms.ModelForm):
upload = forms.FileField(widget=AdminImageWidget)
#
I think the non-sorl fallback has a bug:
absolute_url = os.path.join(settings.MEDIA_ROOT, image_path)
should be
absolute_url = os.path.join(settings.MEDIA_URL, image_path)
Thanks!
#
You should be referencing the storage settings used by the field's "storage" parameter instead of MEDIA_ROOT and MEDIA_URL, as Django allows those to be overridden with custom storage.
#
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