root / env / lib / python2.7 / site-packages / django / contrib / admin / actions.py @ 1a305335
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"""
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Built-in, globally-available admin actions.
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"""
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from django.core.exceptions import PermissionDenied |
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from django.contrib.admin import helpers |
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from django.contrib.admin.util import get_deleted_objects, model_ngettext |
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from django.db import router |
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from django.template.response import TemplateResponse |
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from django.utils.encoding import force_unicode |
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from django.utils.translation import ugettext_lazy, ugettext as _ |
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def delete_selected(modeladmin, request, queryset): |
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"""
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Default action which deletes the selected objects.
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This action first displays a confirmation page whichs shows all the
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deleteable objects, or, if the user has no permission one of the related
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childs (foreignkeys), a "permission denied" message.
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Next, it delets all selected objects and redirects back to the change list.
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"""
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opts = modeladmin.model._meta |
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app_label = opts.app_label |
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# Check that the user has delete permission for the actual model
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if not modeladmin.has_delete_permission(request): |
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raise PermissionDenied
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using = router.db_for_write(modeladmin.model) |
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# Populate deletable_objects, a data structure of all related objects that
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# will also be deleted.
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deletable_objects, perms_needed, protected = get_deleted_objects( |
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queryset, opts, request.user, modeladmin.admin_site, using) |
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# The user has already confirmed the deletion.
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# Do the deletion and return a None to display the change list view again.
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if request.POST.get('post'): |
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if perms_needed:
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raise PermissionDenied
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n = queryset.count() |
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if n:
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for obj in queryset: |
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obj_display = force_unicode(obj) |
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modeladmin.log_deletion(request, obj, obj_display) |
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queryset.delete() |
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modeladmin.message_user(request, _("Successfully deleted %(count)d %(items)s.") % {
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"count": n, "items": model_ngettext(modeladmin.opts, n) |
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}) |
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# Return None to display the change list page again.
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return None |
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if len(queryset) == 1: |
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objects_name = force_unicode(opts.verbose_name) |
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else:
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objects_name = force_unicode(opts.verbose_name_plural) |
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if perms_needed or protected: |
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title = _("Cannot delete %(name)s") % {"name": objects_name} |
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else:
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title = _("Are you sure?")
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context = { |
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"title": title,
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"objects_name": objects_name,
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"deletable_objects": [deletable_objects],
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'queryset': queryset,
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"perms_lacking": perms_needed,
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"protected": protected,
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"opts": opts,
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"app_label": app_label,
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'action_checkbox_name': helpers.ACTION_CHECKBOX_NAME,
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} |
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# Display the confirmation page
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return TemplateResponse(request, modeladmin.delete_selected_confirmation_template or [ |
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"admin/%s/%s/delete_selected_confirmation.html" % (app_label, opts.object_name.lower()),
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"admin/%s/delete_selected_confirmation.html" % app_label,
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"admin/delete_selected_confirmation.html"
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], context, current_app=modeladmin.admin_site.name) |
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delete_selected.short_description = ugettext_lazy("Delete selected %(verbose_name_plural)s")
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