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from django import template
from django.core.exceptions import PermissionDenied
from django.conf.urls.defaults import patterns, url
from django.contrib import admin
from django.contrib.admin import helpers
from django.contrib.contenttypes.models import ContentType
from django.core.urlresolvers import reverse
from django.shortcuts import get_object_or_404, render_to_response
from django.contrib.admin.util import unquote
from django.utils.text import capfirst
from django.utils.html import mark_safe
from django.utils.translation import ugettext as _
from django.utils.encoding import force_unicode
class SimpleHistoryAdmin(admin.ModelAdmin):
object_history_template = "simple_history/object_history.html"
object_history_form_template = "simple_history/object_history_form.html"
def get_urls(self):
"""Returns the additional urls used by the Reversion admin."""
urls = super(SimpleHistoryAdmin, self).get_urls()
admin_site = self.admin_site
opts = self.model._meta
info = opts.app_label, opts.module_name,
history_urls = patterns("",
url("^([^/]+)/history/([^/]+)/$",
admin_site.admin_view(self.history_form_view),
name='%s_%s_simple_history' % info),)
return history_urls + urls
def history_view(self, request, object_id, extra_context=None):
"The 'history' admin view for this model."
model = self.model
opts = model._meta
app_label = opts.app_label
pk_name = opts.pk.attname
history = getattr(model, model._meta.simple_history_manager_attribute)
action_list = history.filter(**{pk_name: object_id})
# If no history was found, see whether this object even exists.
obj = get_object_or_404(model, pk=unquote(object_id))
context = {
'title': _('Change history: %s') % force_unicode(obj),
'action_list': action_list,
'module_name': capfirst(force_unicode(opts.verbose_name_plural)),
'object': obj,
'root_path': getattr(self.admin_site, 'root_path', None),
'app_label': app_label,
'opts': opts
}
context.update(extra_context or {})
context_instance = template.RequestContext(request, current_app=self.admin_site.name)
return render_to_response(self.object_history_template, context, context_instance=context_instance)
def history_form_view(self, request, object_id, version_id):
original_model = self.model
original_opts = original_model._meta
history = getattr(self.model, self.model._meta.simple_history_manager_attribute)
model = history.model
opts = model._meta
pk_name = original_opts.pk.attname
record = get_object_or_404(model, **{pk_name: object_id, 'history_id': version_id})
obj = record.instance
obj._state.adding = False
if not self.has_change_permission(request, obj):
raise PermissionDenied
if request.method == 'POST' and '_saveas_new' in request.POST:
return self.add_view(request, form_url='../add/')
formsets = []
ModelForm = self.get_form(request, obj)
if request.method == 'POST':
form = ModelForm(request.POST, request.FILES, instance=obj)
if form.is_valid():
form_validated = True
new_object = self.save_form(request, form, change=True)
else:
form_validated = False
new_object = obj
prefixes = {}
if form_validated:
self.save_model(request, new_object, form, change=True)
form.save_m2m()
change_message = self.construct_change_message(request, form, formsets)
self.log_change(request, new_object, change_message)
return self.response_change(request, new_object)
else:
form = ModelForm(instance=obj)
adminForm = helpers.AdminForm(form, self.get_fieldsets(request, obj),
self.prepopulated_fields, self.get_readonly_fields(request, obj),
model_admin=self)
media = self.media + adminForm.media
url_triplet = (self.admin_site.name, original_opts.app_label,
original_opts.module_name)
context = {
'title': _('Revert %s') % force_unicode(obj),
'adminform': adminForm,
'object_id': object_id,
'original': obj,
'is_popup': False,
'media': mark_safe(media),
'errors': helpers.AdminErrorList(form, formsets),
'app_label': opts.app_label,
'original_opts': original_opts,
'changelist_url': reverse('%s:%s_%s_changelist' % url_triplet),
'change_url': reverse('%s:%s_%s_change' % url_triplet, args=(obj.pk,)),
'history_url': reverse('%s:%s_%s_history' % url_triplet, args=(obj.pk,)),
# Context variables copied from render_change_form
'add': False,
'change': True,
'has_add_permission': self.has_add_permission(request),
'has_change_permission': self.has_change_permission(request, obj),
'has_delete_permission': self.has_delete_permission(request, obj),
'has_file_field': True,
'has_absolute_url': False,
'ordered_objects': opts.get_ordered_objects(),
'form_url': '',
'opts': opts,
'content_type_id': ContentType.objects.get_for_model(self.model).id,
'save_as': self.save_as,
'save_on_top': self.save_on_top,
'root_path': getattr(self.admin_site, 'root_path', None),
}
context_instance = template.RequestContext(request, current_app=self.admin_site.name)
return render_to_response(self.object_history_form_template, context, context_instance)
def save_model(self, request, obj, form, change):
"""
Add the admin user to a special model attribute for reference after save
"""
obj._history_user = request.user
super(SimpleHistoryAdmin, self).save_model(request, obj, form, change)
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