Add admin action for easy deactivation of users (#6314)

Minor quality of life improvement which helps managing status of users.

CHANGELOG.md

@@ -7,7 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## \[Unreleased\]
 ### Added
-- TDB
+
+- Admin actions for easy activation/deactivation of users (<https://github.com/opencv/cvat/pull/6314>)
 
 ### Changed
 - TDB

cvat/apps/iam/admin.py

@@ -8,6 +8,7 @@
 from django.utils.translation import gettext_lazy as _
 
 class CustomUserAdmin(UserAdmin):
+    list_display = ("username", "email", "first_name", "last_name", "is_active", "is_staff")
     fieldsets = (
         (None, {'fields': ('username', 'password')}),
         (_('Personal info'), {'fields': ('first_name', 'last_name', 'email')}),
@@ -24,6 +25,20 @@ class CustomUserAdmin(UserAdmin):
             },
         ),
     )
+    actions = ["user_activate", "user_deactivate"]
+
+    @admin.action(
+        permissions=["change"], description=_("Mark selected users as active")
+    )
+    def user_activate(self, request, queryset):
+        queryset.update(is_active=True)
+
+    @admin.action(
+        permissions=["change"], description=_("Mark selected users as not active")
+    )
+    def user_deactivate(self, request, queryset):
+        queryset.update(is_active=False)
+
 
 class CustomGroupAdmin(GroupAdmin):
     fieldsets = ((None, {'fields': ('name',)}),)