V9: Prevent delete or unpublish of items that have references

[elit0451]

Details

• By adding the following config options, editors are prevented from deleting Content or Media items (or their descendants) that have references from other items:

"Umbraco": {
  "CMS": {
      "Content": {
        . . .
        "DisableDeleteWhenReferenced": true,
        "DisableUnpublishWhenReferenced": true
      },
    . . .
  }
}

• When the options are set, if the items (or their descendants) have references, the "delete" button will not appear, as well as the confirmation prompt;
  • A new warning is also shown;
• In the bulk delete Content or Media items, the "delete" button is disabled, as well as the confirmation prompt;
• In the unpublish case, the "unpublish" button is disabled;
• If the items have no references, the delete or unpublish dialogues are unchanged!

Test

• Add the above options ⬆️ to your config;
• Have the SK installed
  • Try to delete Content item with and without reference -> Observe the difference;
  • Try to delete Media item with and without reference -> Observe the difference;
  • Try to unpublish Content item with and without reference -> Observe the difference;
  • Try to bulk delete Content items (from the list view) with and without reference -> Observe the difference;
  • Try to bulk delete Media items (from the list view) with and without reference -> Observe the difference;
  • Try to bulk unpublish Content items (from the list view) with and without reference -> Observe the difference;
  • Change the value of the config options and observe the difference;
  • Removing the config options shouldn't change the existing behaviour.