allow only crc works in CRC 1280 collection

hyrax/app/controllers/hyrax/dashboard/collection_members_controller.rb

@@ -70,6 +70,15 @@ module Hyrax
           current_ability.can?(:deposit, @collection)
         return t('hyrax.dashboard.my.action.add_to_collection_only') unless
           member_action == "add" # should never happen
+
+        if batch_ids.present?
+          batch_ids.each do |batch_id|
+            work = ActiveFedora::Base.find(batch_id)
+            if work.class == Dataset && @collection.collection_type.title == 'CRC 1280'
+              return "Collecton #{@collection.title.first}, Only CRC 1280 works allowed"
+            end
+          end
+        end
       end
 
       def success_return_path

hyrax/app/models/dataset.rb

@@ -13,6 +13,7 @@ class Dataset < ActiveFedora::Base
   after_save :save_work_meta_json_file_to_s3
   after_create :set_default_tombstone_status
   after_create :register_ark
+  validate :validate_parent_collection
 
   # ------ properties from core metadata ------
   # property date_modified          - not displayed (filled in by the system)
@@ -127,4 +128,13 @@ class Dataset < ActiveFedora::Base
     self.save
   end
 
+
+  def validate_parent_collection
+    parent_collection = self.parent_collections.first
+
+    if parent_collection.present? && parent_collection.collection_type.title == 'CRC 1280'
+      self.errors.add("Collecton #{parent_collection.title.first}": "Only CRC 1280 works allowed")
+    end
+    
+  end
 end