Closes #3659: Add filtering for objects in admin UI

docs/release-notes/version-2.6.md

@@ -6,6 +6,7 @@
 * [#3499](https://github.com/netbox-community/netbox/issues/3499) - Add `ca_file_path` to Webhook model to support user supplied CA certificate verification of webhook requests
 * [#3594](https://github.com/netbox-community/netbox/issues/3594) - Add ChoiceVar for custom scripts
 * [#3619](https://github.com/netbox-community/netbox/issues/3619) - Add 400GE OSFP interface type
+* [#3659](https://github.com/netbox-community/netbox/issues/3659) - Add filtering for objects in admin UI
 
 ## Bug Fixes
 

netbox/extras/admin.py

@@ -40,6 +40,9 @@ class WebhookAdmin(admin.ModelAdmin):
         'name', 'models', 'payload_url', 'http_content_type', 'enabled', 'type_create', 'type_update',
         'type_delete', 'ssl_verification',
     ]
+    list_filter = [
+        'enabled', 'type_create', 'type_update', 'type_delete', 'obj_type',
+    ]
     form = WebhookForm
 
     def models(self, obj):
@@ -70,7 +73,12 @@ class CustomFieldChoiceAdmin(admin.TabularInline):
 @admin.register(CustomField, site=admin_site)
 class CustomFieldAdmin(admin.ModelAdmin):
     inlines = [CustomFieldChoiceAdmin]
-    list_display = ['name', 'models', 'type', 'required', 'filter_logic', 'default', 'weight', 'description']
+    list_display = [
+        'name', 'models', 'type', 'required', 'filter_logic', 'default', 'weight', 'description',
+    ]
+    list_filter = [
+        'type', 'required', 'obj_type',
+    ]
     form = CustomFieldForm
 
     def models(self, obj):
@@ -106,7 +114,12 @@ class CustomLinkForm(forms.ModelForm):
 
 @admin.register(CustomLink, site=admin_site)
 class CustomLinkAdmin(admin.ModelAdmin):
-    list_display = ['name', 'content_type', 'group_name', 'weight']
+    list_display = [
+        'name', 'content_type', 'group_name', 'weight',
+    ]
+    list_filter = [
+        'content_type',
+    ]
     form = CustomLinkForm
 
 
@@ -116,7 +129,12 @@ class CustomLinkAdmin(admin.ModelAdmin):
 
 @admin.register(Graph, site=admin_site)
 class GraphAdmin(admin.ModelAdmin):
-    list_display = ['name', 'type', 'weight', 'source']
+    list_display = [
+        'name', 'type', 'weight', 'source',
+    ]
+    list_filter = [
+        'type',
+    ]
 
 
 #
@@ -139,7 +157,12 @@ class ExportTemplateForm(forms.ModelForm):
 
 @admin.register(ExportTemplate, site=admin_site)
 class ExportTemplateAdmin(admin.ModelAdmin):
-    list_display = ['name', 'content_type', 'description', 'mime_type', 'file_extension']
+    list_display = [
+        'name', 'content_type', 'description', 'mime_type', 'file_extension',
+    ]
+    list_filter = [
+        'content_type',
+    ]
     form = ExportTemplateForm