Moj 450 update with prefetch primary key (localytics#19)

* MOJ-343 Active Record does support, even if it's not well documented, a method of automatically getting IDs from the database. Implemented this native method to deal with an issue with ActiveStorage.

* MOJ-450 Removed the EasyIdentified concern & corrected a minor bug

lib/active_record/connection_adapters/odbc_adapter.rb

@@ -146,6 +146,15 @@ def new_column(name, default, sql_type_metadata, null, native_type = nil)
         ::ODBCAdapter::Column.new(name, default, sql_type_metadata, null, native_type)
       end
 
+      #Snowflake doesn't have a mechanism to return the primary key on inserts, it needs prefetched
+      def prefetch_primary_key?(table_name = nil)
+        true
+      end
+
+      def next_sequence_value(table_name = nil)
+        exec_query("SELECT #{table_name}.NEXTVAL as new_id").first["new_id"]
+      end
+
       protected
 
       #Snowflake ODBC Adapter specific

lib/odbc_adapter/concerns/insert_attribute_stripper.rb

@@ -1,7 +1,6 @@
 module ODBCAdapter
   module InsertAttributeStripper
     extend ActiveSupport::Concern
-    include EasyIdentified
 
     included do
       alias_method :pre_insert_attribute_stripper_save, :save
@@ -29,11 +28,11 @@ def save_internal(base_function, **options, &block)
                 self[column.name] = nil
               end
             end
-            if stripped_attributes.any? then generate_id end
           else
             stripped_attributes = {}
           end
           first_call_result = base_function.call(**options, &block)
+          return false if first_call_result == false
           if stripped_attributes.any?
             restore_stripped_attributes(stripped_attributes)
             return base_function.call(**options, &block)