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Copy pathfields.py
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98 lines (76 loc) · 3.36 KB
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# ------------------------------------------------------------------------
# coding=utf-8
# ------------------------------------------------------------------------
from __future__ import absolute_import, unicode_literals
from django.contrib.admin.widgets import AdminFileWidget
from django.contrib.admin.widgets import ForeignKeyRawIdWidget
from django.db import models
from django.utils import six
from django.utils.html import escape
from django.utils.safestring import mark_safe
from django.utils.translation import ugettext_lazy as _
from feincms.admin.item_editor import FeinCMSInline
from feincms.utils import shorten_string
from .models import MediaFile
from .thumbnail import admin_thumbnail
__all__ = ('MediaFileForeignKey', 'ContentWithMediaFile')
# ------------------------------------------------------------------------
class MediaFileForeignKeyRawIdWidget(ForeignKeyRawIdWidget):
def __init__(self, original):
self.__dict__ = original.__dict__
def label_for_value(self, value):
key = self.rel.get_related_field().name
try:
obj = self.rel.to._default_manager.using(self.db).get(
**{key: value})
label = [' <strong>%s</strong>' % escape(
shorten_string(six.text_type(obj)))]
image = admin_thumbnail(obj)
if image:
label.append(
'<br /><img src="%s" alt="" style="margin:1em 0 0 170px"'
'/>' % image)
return ''.join(label)
except (ValueError, self.rel.to.DoesNotExist):
return ''
class MediaFileForeignKey(models.ForeignKey):
"""
Drop-in replacement for Django's ``models.ForeignKey`` which automatically
adds a thumbnail of media files if the media file foreign key is shown
using ``raw_id_fields``.
"""
def __init__(self, *args, **kwargs):
if not args and 'to' not in kwargs:
args = (MediaFile,)
super(MediaFileForeignKey, self).__init__(*args, **kwargs)
def formfield(self, **kwargs):
if 'widget' in kwargs and isinstance(
kwargs['widget'], ForeignKeyRawIdWidget):
kwargs['widget'] = MediaFileForeignKeyRawIdWidget(kwargs['widget'])
return super(MediaFileForeignKey, self).formfield(**kwargs)
class ContentWithMediaFile(models.Model):
class feincms_item_editor_inline(FeinCMSInline):
raw_id_fields = ('mediafile',)
mediafile = MediaFileForeignKey(
MediaFile, verbose_name=_('media file'), related_name='+',
on_delete=models.PROTECT
)
class Meta:
abstract = True
# ------------------------------------------------------------------------
class AdminFileWithPreviewWidget(AdminFileWidget):
"""
Simple AdminFileWidget, but detects if the file is an image and
tries to render a small thumbnail besides the input field.
"""
def render(self, name, value, attrs=None):
r = super(AdminFileWithPreviewWidget, self).render(
name, value, attrs=attrs)
if value and getattr(value, 'instance', None):
image = admin_thumbnail(value.instance)
if image:
r = mark_safe((
'<img src="%s" alt="" style="float: left; padding-right:'
'8px; border-right: 1px solid #ccc; margin-right: 8px"'
'>' % image) + r)
return r