@csrf_protect_m
    @transaction.atomic
    def change_view(self, request, object_id, form_url='', extra_context=None):
        model = self.model
        opts = model._meta

        obj = self.get_object(request, unquote(object_id))

        if not self.has_change_permission(request, obj):
            raise PermissionDenied

        if obj is None:
            raise Http404(_('%(name)s object with primary key %(key)r does not exist.') % {'name': force_text(opts.verbose_name), 'key': escape(object_id)})

        if request.method == 'POST' and "_saveasnew" in request.POST:
            return self.add_view(request, form_url=reverse('admin:%s_%s_add' %
                                    (opts.app_label, opts.model_name),
                                    current_app=self.admin_site.name))

        ModelForm = self.get_form(request, obj)
        formsets = []
        inline_instances = self.get_inline_instances(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 = {}
            for FormSet, inline in zip(self.get_formsets(request, new_object), inline_instances):
                prefix = FormSet.get_default_prefix()
                prefixes[prefix] = prefixes.get(prefix, 0) + 1
                if prefixes[prefix] != 1 or not prefix:
                    prefix = "%s-%s" % (prefix, prefixes[prefix])
                formset = FormSet(request.POST, request.FILES,
                                  instance=new_object, prefix=prefix,
                                  queryset=inline.get_queryset(request))

                formsets.append(formset)

            if all_valid(formsets) and form_validated:
                self.save_model(request, new_object, form, True)
                self.save_related(request, form, formsets, True)
                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)
            prefixes = {}
            for FormSet, inline in zip(self.get_formsets(request, obj), inline_instances):
                prefix = FormSet.get_default_prefix()
                prefixes[prefix] = prefixes.get(prefix, 0) + 1
                if prefixes[prefix] != 1 or not prefix:
                    prefix = "%s-%s" % (prefix, prefixes[prefix])
                formset = FormSet(instance=obj, prefix=prefix,
                                  queryset=inline.get_queryset(request))
                formsets.append(formset)

        adminForm = helpers.AdminForm(form, self.get_fieldsets(request, obj),
            self.get_prepopulated_fields(request, obj),
            self.get_readonly_fields(request, obj),
            model_admin=self)
        media = self.media + adminForm.media

        inline_admin_formsets = []
        for inline, formset in zip(inline_instances, formsets):
            fieldsets = list(inline.get_fieldsets(request, obj))
            readonly = list(inline.get_readonly_fields(request, obj))
            prepopulated = dict(inline.get_prepopulated_fields(request, obj))
            inline_admin_formset = helpers.InlineAdminFormSet(inline, formset,
                fieldsets, prepopulated, readonly, model_admin=self)
            inline_admin_formsets.append(inline_admin_formset)
            media = media + inline_admin_formset.media

        context = {
            'title': _('Change %s') % force_text(opts.verbose_name),
            'adminform': adminForm,
            'object_id': object_id,
            'original': obj,
            'is_popup': IS_POPUP_VAR in request.REQUEST,
            'media': media,
            'inline_admin_formsets': inline_admin_formsets,
            'errors': helpers.AdminErrorList(form, formsets),
            'app_label': opts.app_label,
            'preserved_filters': self.get_preserved_filters(request),
        }
        context.update(extra_context or {})
        return self.render_change_form(request, context, change=True, obj=obj, form_url=form_url)
Test whether a path is a directory
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/Django-1.6.10/django/contrib/admin/options.py/ModelAdmin.change_view--crossover with--dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/javapath.py/isdir