mirror of
https://github.com/jazzband/django-categories.git
synced 2026-03-16 22:30:24 +00:00
111 lines
No EOL
4.2 KiB
Python
111 lines
No EOL
4.2 KiB
Python
from django.contrib import admin
|
|
from django import forms
|
|
from django.template.defaultfilters import slugify
|
|
|
|
from mptt.forms import TreeNodeChoiceField
|
|
from editor.tree_editor import TreeEditor
|
|
from genericcollection import GenericCollectionTabularInline
|
|
|
|
from settings import ALLOW_SLUG_CHANGE, RELATION_MODELS
|
|
from categories import registry
|
|
from models import Category
|
|
|
|
class NullTreeNodeChoiceField(forms.ModelChoiceField):
|
|
"""A ModelChoiceField for tree nodes."""
|
|
def __init__(self, level_indicator=u'---', *args, **kwargs):
|
|
self.level_indicator = level_indicator
|
|
#kwargs['empty_label'] = None
|
|
super(NullTreeNodeChoiceField, self).__init__(*args, **kwargs)
|
|
|
|
def label_from_instance(self, obj):
|
|
"""
|
|
Creates labels which represent the tree level of each node when
|
|
generating option labels.
|
|
"""
|
|
return u'%s %s' % (self.level_indicator * getattr(obj, obj._meta.level_attr),
|
|
obj)
|
|
if RELATION_MODELS:
|
|
from models import CategoryRelation
|
|
|
|
class InlineCategoryRelation(GenericCollectionTabularInline):
|
|
model = CategoryRelation
|
|
|
|
|
|
class CategoryAdminForm(forms.ModelForm):
|
|
parent = NullTreeNodeChoiceField(queryset=Category.tree.all(),
|
|
level_indicator=u'+-',
|
|
empty_label='------',
|
|
required=False)
|
|
class Meta:
|
|
model = Category
|
|
|
|
def clean_slug(self):
|
|
if self.instance is None or not ALLOW_SLUG_CHANGE:
|
|
self.cleaned_data['slug'] = slugify(self.cleaned_data['name'])
|
|
return self.cleaned_data['slug']
|
|
|
|
def clean_alternate_title(self):
|
|
if self.instance is None or not self.cleaned_data['alternate_title']:
|
|
return self.cleaned_data['name']
|
|
else:
|
|
return self.cleaned_data['alternate_title']
|
|
|
|
def clean(self):
|
|
super(CategoryAdminForm, self).clean()
|
|
|
|
# Validate slug is valid in that level
|
|
kwargs = {}
|
|
if self.cleaned_data.get('parent', None) is None:
|
|
kwargs['parent__isnull'] = True
|
|
else:
|
|
kwargs['parent__pk'] = int(self.cleaned_data['parent'].id)
|
|
this_level_slugs = [c['slug'] for c in Category.objects.filter(**kwargs).values('id','slug') if c['id'] != self.instance.id]
|
|
if self.cleaned_data['slug'] in this_level_slugs:
|
|
raise forms.ValidationError("A category slug must be unique among categories at its level.")
|
|
|
|
# Validate Category Parent
|
|
# Make sure the category doesn't set itself or any of its children as its parent."
|
|
if self.cleaned_data.get('parent', None) is None or self.instance.id is None:
|
|
return self.cleaned_data
|
|
elif self.cleaned_data['parent'].id == self.instance.id:
|
|
raise forms.ValidationError("You can't set the parent of the category to itself.")
|
|
elif self.cleaned_data['parent'].id in [i[0] for i in self.instance.get_descendants().values_list('id')]:
|
|
raise forms.ValidationError("You can't set the parent of the category to a descendant.")
|
|
return self.cleaned_data
|
|
|
|
|
|
class CategoryAdmin(TreeEditor, admin.ModelAdmin):
|
|
form = CategoryAdminForm
|
|
list_display = ('__unicode__',)
|
|
search_fields = (('name',))
|
|
prepopulated_fields = {'slug': ('name',)}
|
|
fieldsets = (
|
|
(None, {
|
|
'fields': ('parent', 'name')
|
|
}),
|
|
('Meta Data', {
|
|
'fields': ('alternate_title', 'description', 'meta_keywords', 'meta_extra'),
|
|
'classes': ('collapse',),
|
|
}),
|
|
('Advanced', {
|
|
'fields': ('order', 'slug'),
|
|
'classes': ('collapse',),
|
|
}),
|
|
)
|
|
if RELATION_MODELS:
|
|
inlines = [InlineCategoryRelation,]
|
|
|
|
class Media:
|
|
js = ('js/genericcollections.js',)
|
|
|
|
|
|
admin.site.register(Category, CategoryAdmin)
|
|
|
|
for model,modeladmin in admin.site._registry.items():
|
|
if model in registry.values():
|
|
admin.site.unregister(model)
|
|
admin.site.register(model, type('newadmin', (modeladmin.__class__,), {
|
|
'fieldsets': modeladmin.fieldsets + (('Categories',{
|
|
'fields': ('category','categories'),
|
|
}),)
|
|
})) |