fk: support for on_update

3 files changed, 9 insertions, 3 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb
index aad4431910..b896bd25e4 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb
@@ -24,7 +24,8 @@ ADD CONSTRAINT #{quote_column_name(o.name)}
 FOREIGN KEY (#{quote_column_name(o.column)})
   REFERENCES #{quote_table_name(o.to_table)} (#{quote_column_name(o.primary_key)})
           SQL
-          sql << " #{action_sql(o.on_delete)}" if o.on_delete
+          sql << " #{action_sql('DELETE', o.on_delete)}" if o.on_delete
+          sql << " #{action_sql('UPDATE', o.on_update)}" if o.on_update
           sql
         end
 
@@ -101,7 +102,7 @@ FOREIGN KEY (#{quote_column_name(o.column)})
             options.include?(:default) && !(options[:null] == false && options[:default].nil?)
           end
 
-          def action_sql(action = "DELETE", dependency)
+          def action_sql(action, dependency)
             case dependency
               when :nullify then "ON #{action} SET NULL"
               when :cascade  then "ON #{action} CASCADE"
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
index 2d6cf2427c..2e47e68754 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
@@ -41,6 +41,10 @@ module ActiveRecord
       def on_delete
         options[:on_delete]
       end
+
+      def on_update
+        options[:on_update]
+      end
     end
 
     # Represents the schema of an SQL table in an abstract way. This class
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
index 3f72e35bb5..18e73b0200 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
@@ -654,7 +654,8 @@ module ActiveRecord
           column: options[:column],
           primary_key: primary_key,
           name: foreign_key_name(from_table, options),
-          on_delete: options.fetch(:on_delete, nil)
+          on_delete: options[:on_delete],
+          on_update: options[:on_update]
         }
         at = create_alter_table from_table
         at.add_foreign_key to_table, options