seems re-defining primary_key (on postgres) works now with recent AR-4.0

Author: kares

lib/arjdbc/postgresql/adapter.rb

@@ -1504,12 +1504,12 @@ def json(name, options = {})
     class TableDefinition < ActiveRecord::ConnectionAdapters::TableDefinition
       include ColumnMethods
 
-#      def primary_key(name, type = :primary_key, options = {})
-#        return super unless type == :uuid
-#        options[:default] ||= 'uuid_generate_v4()'
-#        options[:primary_key] = true
-#        column name, type, options
-#      end if ActiveRecord::VERSION::MAJOR > 3 # 3.2 super expects (name)
+      def primary_key(name, type = :primary_key, options = {})
+        return super unless type == :uuid
+        options[:default] ||= 'uuid_generate_v4()'
+        options[:primary_key] = true
+        column name, type, options
+      end if ActiveRecord::VERSION::MAJOR > 3 # 3.2 super expects (name)
 
       def column(name, type = nil, options = {})
         super