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Page Reference MySQL RESTRICT style action

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From what I can tell if you have a Page Reference field and that links to a page, e.g.:

  1. page1.pageReference links to page2
  2. page2 is deleted
  3. page1.pageReference now equals null

Is there any way here to mimic a MySQL RESTRICT action so that page2 cannot be deleted (and warns you as such in the admin) while there are page fields that point to it?


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