Contents

module RedhillonrailsCore
  module ActiveRecord
    module ConnectionAdapters
      class ForeignKeyDefinition < Struct.new(:name, :table_name, :column_names, :references_table_name, :references_column_names, :on_update, :on_delete, :deferrable)
        ACTIONS = { :cascade => "CASCADE", :restrict => "RESTRICT", :set_null => "SET NULL", :set_default => "SET DEFAULT", :no_action => "NO ACTION" }.freeze

        def to_dump
          dump = "add_foreign_key"
          dump << " #{table_name.inspect}, [#{Array(column_names).collect{ |name| name.inspect }.join(', ')}]"
          dump << ", #{references_table_name.inspect}, [#{Array(references_column_names).collect{ |name| name.inspect }.join(', ')}]"
          dump << ", :on_update => :#{on_update}" if on_update
          dump << ", :on_delete => :#{on_delete}" if on_delete
          dump << ", :deferrable => #{deferrable}" if deferrable
          dump << ", :name => #{name.inspect}" if name
          dump
        end

        def to_sql
          sql = name ? "CONSTRAINT #{name} " : ""
          sql << "FOREIGN KEY (#{Array(column_names).join(", ")}) REFERENCES #{references_table_name} (#{Array(references_column_names).join(", ")})"
          sql << " ON UPDATE #{ACTIONS[on_update]}" if on_update
          sql << " ON DELETE #{ACTIONS[on_delete]}" if on_delete
          sql << " DEFERRABLE" if deferrable
          sql
        end
        alias :to_s :to_sql
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
redhillonrails_core-1.1.0	lib/redhillonrails_core/active_record/connection_adapters/foreign_key_definition.rb