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admin.py
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admin.py
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from __future__ import unicode_literals
from django import http
from django.core.exceptions import PermissionDenied
from django.conf.urls import url
from django.contrib import admin
from django.contrib.admin import helpers
from django.contrib.contenttypes.models import ContentType
from django.shortcuts import get_object_or_404, render
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_text
from django.conf import settings
try:
from django.urls import reverse
except ImportError: # Django < 1.10
from django.core.urlresolvers import reverse
try:
from django.contrib.admin.utils import unquote
except ImportError: # Django < 1.7
from django.contrib.admin.util import unquote
try:
from django.utils.version import get_complete_version
except ImportError:
from django import VERSION
get_complete_version = lambda: VERSION
USER_NATURAL_KEY = tuple(
key.lower() for key in settings.AUTH_USER_MODEL.split('.', 1))
SIMPLE_HISTORY_EDIT = getattr(settings, 'SIMPLE_HISTORY_EDIT', False)
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.model_name
history_urls = [
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."""
request.current_app = self.admin_site.name
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)
object_id = unquote(object_id)
action_list = history.filter(**{pk_name: object_id})
history_list_display = getattr(self, "history_list_display", [])
# If no history was found, see whether this object even exists.
try:
obj = self.get_queryset(request).get(**{pk_name: object_id})
except model.DoesNotExist:
try:
obj = action_list.latest('history_date').instance
except action_list.model.DoesNotExist:
raise http.Http404
content_type = ContentType.objects.get_by_natural_key(
*USER_NATURAL_KEY)
admin_user_view = 'admin:%s_%s_change' % (content_type.app_label,
content_type.model)
context = {
'title': _('Change history: %s') % force_text(obj),
'action_list': action_list,
'module_name': capfirst(force_text(opts.verbose_name_plural)),
'object': obj,
'root_path': getattr(self.admin_site, 'root_path', None),
'app_label': app_label,
'opts': opts,
'admin_user_view': admin_user_view,
'history_list_display': history_list_display,
}
context.update(extra_context or {})
extra_kwargs = {}
if get_complete_version() < (1, 8):
extra_kwargs['current_app'] = request.current_app
return render(request, self.object_history_template, context, **extra_kwargs)
def response_change(self, request, obj):
if '_change_history' in request.POST and SIMPLE_HISTORY_EDIT:
verbose_name = obj._meta.verbose_name
msg = _('The %(name)s "%(obj)s" was changed successfully.') % {
'name': force_text(verbose_name),
'obj': force_text(obj)
}
self.message_user(
request, "%s - %s" % (msg, _("You may edit it again below")))
return http.HttpResponseRedirect(request.path)
else:
return super(SimpleHistoryAdmin, self).response_change(
request, obj)
def history_form_view(self, request, object_id, version_id):
request.current_app = self.admin_site.name
original_opts = self.model._meta
model = getattr(
self.model,
self.model._meta.simple_history_manager_attribute).model
obj = get_object_or_404(model, **{
original_opts.pk.attname: object_id,
'history_id': version_id,
}).instance
obj._state.adding = False
if not self.has_change_permission(request, obj):
raise PermissionDenied
if SIMPLE_HISTORY_EDIT:
change_history = True
else:
change_history = False
if '_change_history' in request.POST and SIMPLE_HISTORY_EDIT:
obj = obj.history.get(pk=version_id).instance
formsets = []
form_class = self.get_form(request, obj)
if request.method == 'POST':
form = form_class(request.POST, request.FILES, instance=obj)
if form.is_valid():
new_object = self.save_form(request, form, change=True)
self.save_model(request, new_object, form, change=True)
form.save_m2m()
self.log_change(request, new_object,
self.construct_change_message(
request, form, formsets))
return self.response_change(request, new_object)
else:
form = form_class(instance=obj)
admin_form = helpers.AdminForm(
form,
self.get_fieldsets(request, obj),
self.prepopulated_fields,
self.get_readonly_fields(request, obj),
model_admin=self,
)
model_name = original_opts.model_name
url_triplet = self.admin_site.name, original_opts.app_label, model_name
context = {
'title': _('Revert %s') % force_text(obj),
'adminform': admin_form,
'object_id': object_id,
'original': obj,
'is_popup': False,
'media': mark_safe(self.media + admin_form.media),
'errors': helpers.AdminErrorList(form, formsets),
'app_label': original_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,)),
'change_history': change_history,
# 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,
'form_url': '',
'opts': model._meta,
'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),
}
extra_kwargs = {}
if get_complete_version() < (1, 8):
extra_kwargs['current_app'] = request.current_app
return render(request, self.object_history_form_template, context, **extra_kwargs)
def save_model(self, request, obj, form, change):
"""Set special model attribute to user for reference after save"""
obj._history_user = request.user
super(SimpleHistoryAdmin, self).save_model(request, obj, form, change)