Issue #2314881 by Crell: Standardize responsive image mapping entity route names.

core/modules/responsive_image/responsive_image.links.task.yml

-responsive_image.mapping_page_edit:
+entity.responsive_image_mapping.edit_form:
   title: Edit
-  route_name: responsive_image.mapping_page_edit
-  base_route: responsive_image.mapping_page_edit
+  route_name: entity.responsive_image_mapping.edit_form
+  base_route: entity.responsive_image_mapping.edit_form
   weight: -10

core/modules/responsive_image/responsive_image.module

@@ -66,11 +66,11 @@ function responsive_image_menu() {
   );
   $items['admin/config/media/responsive-image-mapping/%responsive_image_mapping'] = array(
     'title' => 'Edit responsive image mapping',
-    'route_name' => 'responsive_image.mapping_page_edit',
+    'route_name' => 'entity.responsive_image_mapping.edit_form',
   );
   $items['admin/config/media/responsive-image-mapping/%responsive_image_mapping/duplicate'] = array(
     'title' => 'Duplicate responsive image mapping',
-    'route_name' => 'responsive_image.mapping_page_duplicate',
+    'route_name' => 'entity.responsive_image_mapping.duplicate_form',
   );
 
   return $items;

core/modules/responsive_image/responsive_image.routing.yml

@@ -14,7 +14,7 @@ responsive_image.mapping_page_add:
   requirements:
     _permission: 'administer responsive images'
 
-responsive_image.mapping_page_edit:
+entity.responsive_image_mapping.edit_form:
   path: '/admin/config/media/responsive-image-mapping/{responsive_image_mapping}'
   defaults:
     _entity_form: 'responsive_image_mapping.edit'
@@ -22,7 +22,7 @@ responsive_image.mapping_page_edit:
   requirements:
     _permission: 'administer responsive images'
 
-responsive_image.mapping_page_duplicate:
+entity.responsive_image_mapping.duplicate_form:
   path: '/admin/config/media/responsive-image-mapping/{responsive_image_mapping}/duplicate'
   defaults:
     _entity_form: 'responsive_image_mapping.duplicate'

core/modules/responsive_image/src/Entity/ResponsiveImageMapping.php

@@ -34,8 +34,8 @@
  *     "label" = "label"
  *   },
  *   links = {
- *     "edit-form" = "responsive_image.mapping_page_edit",
- *     "duplicate-form" = "responsive_image.mapping_page_duplicate"
+ *     "edit-form" = "entity.responsive_image_mapping.edit_form",
+ *     "duplicate-form" = "entity.responsive_image_mapping.duplicate_form"
  *   }
  * )
  */

core/modules/responsive_image/src/ResponsiveImageMappingForm.php

@@ -132,7 +132,7 @@ public function save(array $form, FormStateInterface $form_state) {
     // another breakpoint group.
     if (!$responsive_image_mapping->hasMappings()) {
       $form_state['redirect_route'] = array(
-        'route_name' => 'responsive_image.mapping_page_edit',
+        'route_name' => 'entity.responsive_image_mapping.edit_form',
         'route_parameters' => array(
           'responsive_image_mapping' => $responsive_image_mapping->id(),
         ),