feat: add is_published flag to assignments

lmsege/lms/admin.py

@@ -18,14 +18,24 @@ class QuestionInline(StackedInline):
 
 @admin.register(Assignment)
 class AssignmentAdmin(ModelAdmin):
-    list_display = ('title', 'subject', 'created_at')
+    list_display = ('title', 'subject', 'is_published', 'created_at')
     list_display_links = ('title',)
-    list_filter = ('subject',)
+    list_filter = ('subject', 'is_published')
     search_fields = ('title', 'description')
     exclude = ('created_by',)
     filter_horizontal = ('assigned_students',)
     inlines = [QuestionInline]
-    actions = ['delete_selected_assignments']
+    actions = ['make_published', 'make_unpublished', 'delete_selected_assignments']
+
+    @admin.action(description="Опубликовать выбранные задания")
+    def make_published(self, request, queryset):
+        updated = queryset.update(is_published=True)
+        self.message_user(request, f"Опубликовано {updated} заданий.")
+
+    @admin.action(description="Скрыть выбранные задания (в черновик)")
+    def make_unpublished(self, request, queryset):
+        updated = queryset.update(is_published=False)
+        self.message_user(request, f"Скрыто {updated} заданий.")
 
     @admin.action(description="Удалить выбранные задания")
     def delete_selected_assignments(self, request, queryset):