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import os
from django import forms
from django.contrib import admin
from django.contrib.admin.widgets import AdminFileWidget
from django.utils.safestring import mark_safe
from django.utils.translation import ugettext_lazy as _
from django.conf import settings
class TagListFilter(admin.SimpleListFilter):
# Human-readable title which will be displayed in the
# right admin sidebar just above the filter options.
title = _('tag')
# Parameter for the filter that will be used in the URL query.
parameter_name = 'tag'
def lookups(self, request, model_admin):
"""
Returns a list of tuples. The first element in each
tuple is the coded value for the option that will
appear in the URL query. The second element is the
human-readable name for the option that will appear
in the right sidebar.
"""
tl = []
self.model_to_use = model_admin.model
for t in self.model_to_use.tags.all().order_by('name'):
tl += (t.name, t.name),
return tl
def queryset(self, request, queryset):
"""
Returns the filtered queryset based on the value
provided in the query string and retrievable via
`self.value()`.
"""
qs = self.model_to_use.objects.all()
try:
request.GET['tag']
return qs.filter(tags__name=self.value())
except:
return qs
def thumbnail(image_path):
absolute_url = os.path.join(settings.IMAGES_URL, image_path[7:])
print(absolute_url)
return '<img style="max-width: 400px" 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)
help_text = ''
if file_name:
file_path = '%s' % (file_name)
if attrs['id'] == 'id_thumbnail':
help_text = '160 wide'
if attrs['id'] == 'id_image':
help_text = '205px high'
output.append('<span>%s</span><a target="_blank" href="%s">%s</a>' % (help_text, file_path, thumbnail(file_name)))
output.append(super(AdminFileWidget, self).render(name, value, attrs))
return mark_safe(''.join(output))
class LGEntryForm(forms.ModelForm):
class Meta:
widgets = {
'body_markdown': forms.Textarea(attrs={'rows': 50, 'cols': 100}),
}
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