[Fix #1619] Do not consider invitations to deleted dossiers

app/models/invite.rb

@@ -10,4 +10,11 @@ class Invite < ApplicationRecord
   validates :email, uniqueness: { scope: :dossier_id }
 
   validates :email, format: { with: Devise.email_regexp, message: "n'est pas valide" }, allow_nil: true
+
+  # #1619 When an administrateur deletes a `Procedure`, its `hidden_at` field, and
+  # the `hidden_at` field of its `Dossier`s, get set, effectively removing the Procedure
+  # and Dossier from their respective `default_scope`s.
+  # Therefore, we also remove `Invite`s for such effectively deleted `Dossier`s
+  # from their default scope.
+  default_scope { joins(:dossier).where(dossiers: { hidden_at: nil }) }
 end