from functools import wraps, partial from django.contrib import messages from django.contrib.admin import helpers from django.template.response import TemplateResponse from django.utils.decorators import available_attrs from django.utils.encoding import force_text def admin_field(method): """ Wraps a function to be used as a ModelAdmin method field """ def admin_field_wrapper(*args, **kwargs): """ utility function for creating admin links """ kwargs['field'] = args[0] if args else '' kwargs['order'] = kwargs.get('order', kwargs['field']) kwargs['popup'] = kwargs.get('popup', False) kwargs['description'] = kwargs.get('description', kwargs['field'].split('__')[-1].replace('_', ' ').capitalize()) admin_method = partial(method, **kwargs) admin_method.short_description = kwargs['description'] admin_method.allow_tags = True admin_method.admin_order_field = kwargs['order'] return admin_method return admin_field_wrapper def action_with_confirmation(action_name, extra_context={}, template='admin/orchestra/generic_confirmation.html'): """ Generic pattern for actions that needs confirmation step If custom template is provided the form must contain: """ def decorator(func, extra_context=extra_context, template=template): @wraps(func, assigned=available_attrs(func)) def inner(modeladmin, request, queryset): # The user has already confirmed the action. if request.POST.get('post') == "generic_confirmation": stay = func(modeladmin, request, queryset) if not stay: return opts = modeladmin.model._meta app_label = opts.app_label action_value = func.__name__ if len(queryset) == 1: objects_name = force_text(opts.verbose_name) else: objects_name = force_text(opts.verbose_name_plural) context = { "title": "Are you sure?", "content_message": "Are you sure you want to %s the selected %s?" % (action_name, objects_name), "action_name": action_name.capitalize(), "action_value": action_value, "deletable_objects": queryset, 'queryset': queryset, "opts": opts, "app_label": app_label, 'action_checkbox_name': helpers.ACTION_CHECKBOX_NAME, } context.update(extra_context) # Display the confirmation page return TemplateResponse(request, template, context, current_app=modeladmin.admin_site.name) return inner return decorator