Send link with the text_bindings in notifications when link_to is set

app/models/notification.rb

@@ -83,13 +83,17 @@ def backup_subject_name
   def text_bindings
     [:initiator, :subject, :cause].each_with_object(text_bindings_dynamic) do |key, result|
       value = public_send(key)
+      next unless value
+
+      # Set the link based on the notification_type.link_to
+      result[:link] = {
+        :id    => value.id,
+        :model => value.class.name
+      } if notification_type.link_to.try(:to_sym) == key
+
       result[key] = {
-        :link => {
-          :id    => value.id,
-          :model => value.class.name,
-        },
         :text => value.try(:name) || value.try(:description)
-      } if value
+      }
     end
   end
 

app/models/notification_type.rb

@@ -9,6 +9,7 @@ class NotificationType < ApplicationRecord
   has_many :notifications
   validates :message, :presence => true
   validates :level, :inclusion => { :in => %w(success error warning info) }
+  validates :link_to, :inclusion => { :in => %w(subject initiator cause) }, :allow_blank => true
   validates :audience, :inclusion => {
     :in => [AUDIENCE_USER, AUDIENCE_GROUP, AUDIENCE_TENANT, AUDIENCE_GLOBAL, AUDIENCE_SUPERADMIN]
   }