forked from expo/troggle
[svn] Updates to allow subcave tree with nice admin.
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substantialnoninfringinguser
183
feincms/admin/editor.py
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183
feincms/admin/editor.py
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import re
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from django import forms, template
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from django.conf import settings
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from django.contrib import admin
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from django.contrib.admin.options import IncorrectLookupParameters
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from django.contrib.admin.util import unquote
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from django.core import serializers
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from django.core.exceptions import ImproperlyConfigured
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from django.db import connection, transaction
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from django.forms.formsets import all_valid
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from django.forms.models import inlineformset_factory
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from django.http import HttpResponseRedirect, HttpResponse
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from django.shortcuts import render_to_response
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from django.utils import simplejson
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from django.utils.encoding import force_unicode
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from django.utils.functional import update_wrapper
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from django.utils.translation import ugettext_lazy as _
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FEINCMS_ADMIN_MEDIA = getattr(settings, 'FEINCMS_ADMIN_MEDIA', '/media/sys/feincms/')
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class ItemEditorMixin(object):
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"""
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This mixin needs an attribute on the ModelAdmin class:
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show_on_top::
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A list of fields which should be displayed at the top of the form.
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This does not need to (and should not) include ``template''
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"""
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def change_view(self, request, object_id, extra_context=None):
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if not hasattr(self.model, '_feincms_content_types'):
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raise ImproperlyConfigured, 'You need to create at least one content type for the %s model.' % (self.model.__name__)
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class ModelForm(forms.ModelForm):
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class Meta:
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model = self.model
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class SettingsFieldset(forms.ModelForm):
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# This form class is used solely for presentation, the data will be saved
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# by the ModelForm above
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class Meta:
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model = self.model
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exclude = self.show_on_top+('template',)
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inline_formset_types = [(
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content_type,
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inlineformset_factory(self.model, content_type, extra=1)
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) for content_type in self.model._feincms_content_types]
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opts = self.model._meta
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app_label = opts.app_label
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obj = self.model._default_manager.get(pk=unquote(object_id))
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if not self.has_change_permission(request, obj):
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raise PermissionDenied
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if request.method == 'POST':
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model_form = ModelForm(request.POST, request.FILES, instance=obj)
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inline_formsets = [
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formset_class(request.POST, request.FILES, instance=obj,
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prefix=content_type.__name__.lower())
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for content_type, formset_class in inline_formset_types]
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if model_form.is_valid() and all_valid(inline_formsets):
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model_form.save()
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for formset in inline_formsets:
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formset.save()
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return HttpResponseRedirect(".")
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settings_fieldset = SettingsFieldset(request.POST, instance=obj)
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settings_fieldset.is_valid()
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else:
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model_form = ModelForm(instance=obj)
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inline_formsets = [
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formset_class(instance=obj, prefix=content_type.__name__.lower())
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for content_type, formset_class in inline_formset_types]
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settings_fieldset = SettingsFieldset(instance=obj)
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content_types = []
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for content_type in self.model._feincms_content_types:
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content_name = content_type._meta.verbose_name
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content_types.append((content_name, content_type.__name__.lower()))
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context = {
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'title': _('Change %s') % force_unicode(opts.verbose_name),
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'opts': opts,
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'page': obj,
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'page_form': model_form,
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'inline_formsets': inline_formsets,
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'content_types': content_types,
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'settings_fieldset': settings_fieldset,
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'top_fieldset': [model_form[field] for field in self.show_on_top],
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'FEINCMS_ADMIN_MEDIA': FEINCMS_ADMIN_MEDIA,
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}
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return render_to_response([
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'admin/feincms/%s/%s/item_editor.html' % (app_label, opts.object_name.lower()),
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'admin/feincms/%s/item_editor.html' % app_label,
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'admin/feincms/item_editor.html',
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], context, context_instance=template.RequestContext(request))
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class TreeEditorMixin(object):
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def changelist_view(self, request, extra_context=None):
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# handle AJAX requests
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if request.is_ajax():
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cmd = request.POST.get('__cmd')
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if cmd=='save_tree':
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return self._save_tree(request)
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elif cmd=='delete_item':
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return self._delete_item(request)
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return HttpResponse('Oops. AJAX request not understood.')
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from django.contrib.admin.views.main import ChangeList, ERROR_FLAG
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opts = self.model._meta
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app_label = opts.app_label
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if not self.has_change_permission(request, None):
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raise PermissionDenied
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try:
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cl = ChangeList(request, self.model, self.list_display,
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self.list_display_links, self.list_filter, self.date_hierarchy,
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self.search_fields, self.list_select_related, self.list_per_page,
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self.list_editable, self)
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except IncorrectLookupParameters:
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# Wacky lookup parameters were given, so redirect to the main
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# changelist page, without parameters, and pass an 'invalid=1'
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# parameter via the query string. If wacky parameters were given and
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# the 'invalid=1' parameter was already in the query string, something
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# is screwed up with the database, so display an error page.
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if ERROR_FLAG in request.GET.keys():
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return render_to_response('admin/invalid_setup.html', {'title': _('Database error')})
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return HttpResponseRedirect(request.path + '?' + ERROR_FLAG + '=1')
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context = {
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'FEINCMS_ADMIN_MEDIA': FEINCMS_ADMIN_MEDIA,
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'title': cl.title,
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'is_popup': cl.is_popup,
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'cl': cl,
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'has_add_permission': self.has_add_permission(request),
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'root_path': self.admin_site.root_path,
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'app_label': app_label,
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'object_list': self.model._tree_manager.all(),
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}
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context.update(extra_context or {})
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return render_to_response([
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'admin/feincms/%s/%s/tree_editor.html' % (app_label, opts.object_name.lower()),
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'admin/feincms/%s/tree_editor.html' % app_label,
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'admin/feincms/tree_editor.html',
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], context, context_instance=template.RequestContext(request))
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def _save_tree(self, request):
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pagetree = simplejson.loads(request.POST['tree'])
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# 0 = tree_id, 1 = parent_id, 2 = left, 3 = right, 4 = level, 5 = item_id
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sql = "UPDATE %s SET %s=%%s, %s_id=%%s, %s=%%s, %s=%%s, %s=%%s WHERE %s=%%s" % (
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self.model._meta.db_table,
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self.model._meta.tree_id_attr,
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self.model._meta.parent_attr,
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self.model._meta.left_attr,
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self.model._meta.right_attr,
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self.model._meta.level_attr,
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self.model._meta.pk.column)
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connection.cursor().executemany(sql, pagetree)
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transaction.commit_unless_managed()
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return HttpResponse("OK", mimetype="text/plain")
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def _delete_item(self, request):
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page_id = request.POST['item_id']
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obj = self.model._default_manager.get(pk=unquote(page_id))
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obj.delete()
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return HttpResponse("OK", mimetype="text/plain")
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