Moved catalogue, chunks, compress, newtagging and pagination applications to apps...

[wolnelektury.git] / apps / newtagging / admin.py

diff --git a/apps/newtagging/admin.py b/apps/newtagging/admin.py
new file mode 100644 (file)
index 0000000..956d2cf
--- /dev/null
+++ b/apps/newtagging/admin.py
@@ -0,0 +1,67 @@
+# -*- coding: utf-8 -*-
+from django.contrib import admin
+from django import forms
+from django.utils.safestring import mark_safe
+from django.utils.translation import ugettext_lazy as _
+
+
+class FilteredSelectMultiple(forms.SelectMultiple):
+    """
+    A SelectMultiple with a JavaScript filter interface.
+
+    Note that the resulting JavaScript assumes that the SelectFilter2.js
+    library and its dependencies have been loaded in the HTML page.
+    """
+    def _media(self):
+        from django.conf import settings
+        js = ['js/SelectBox.js' , 'js/SelectFilter2.js']
+        return forms.Media(js=['%s%s' % (settings.ADMIN_MEDIA_PREFIX, url) for url in js])
+    media = property(_media)
+    
+    def __init__(self, verbose_name, is_stacked, attrs=None, choices=()):
+        self.verbose_name = verbose_name
+        self.is_stacked = is_stacked
+        super(FilteredSelectMultiple, self).__init__(attrs, choices)
+
+    def render(self, name, value, attrs=None, choices=()):
+        from django.conf import settings
+        output = [super(FilteredSelectMultiple, self).render(name, value, attrs, choices)]
+        output.append(u'<script type="text/javascript">addEvent(window, "load", function(e) {')
+        # TODO: "id_" is hard-coded here. This should instead use the correct
+        # API to determine the ID dynamically.
+        output.append(u'SelectFilter.init("id_%s", "%s", %s, "%s"); });</script>\n' % \
+            (name, self.verbose_name.replace('"', '\\"'), int(self.is_stacked), settings.ADMIN_MEDIA_PREFIX))
+        return mark_safe(u''.join(output))
+
+
+class TaggableModelForm(forms.ModelForm):
+    tags = forms.MultipleChoiceField(label=_('tags').capitalize(), required=True, widget=FilteredSelectMultiple(_('tags'), False))
+
+    def __init__(self, *args, **kwargs):
+        if 'instance' in kwargs:
+            if 'initial' not in kwargs:
+                kwargs['initial'] = {}
+            kwargs['initial']['tags'] = [tag.id for tag in self.tag_model.objects.get_for_object(kwargs['instance'])]
+        super(TaggableModelForm, self).__init__(*args, **kwargs)
+        self.fields['tags'].choices = [(tag.id, tag.name) for tag in self.tag_model.objects.all()]
+    
+    def save(self, commit):
+        obj = super(TaggableModelForm, self).save()
+        tag_ids = self.cleaned_data['tags']
+        tags = self.tag_model.objects.filter(pk__in=tag_ids)
+        self.tag_model.objects.update_tags(obj, tags)
+        return obj
+
+    def save_m2m(self):
+        # TODO: Shouldn't be needed
+        pass
+
+
+class TaggableModelAdmin(admin.ModelAdmin):
+    form = TaggableModelForm
+    
+    def get_form(self, request, obj=None):
+        form = super(TaggableModelAdmin, self).get_form(request, obj)
+        form.tag_model = self.tag_model
+        return form
+