Module: AlsoMigrate::Migration::ClassMethods

Defined in:
lib/also_migrate/migration.rb

Instance Method Summary collapse

Instance Method Details

#method_missing_with_also_migrate(method, *arguments, &block) ⇒ Object 



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# File 'lib/also_migrate/migration.rb', line 18

def method_missing_with_also_migrate(method, *arguments, &block)
  args = Marshal.load(Marshal.dump(arguments))
  method_missing_without_also_migrate(method, *arguments, &block)

  supported = [
    :add_column, :add_index, :add_timestamps, :change_column,
    :change_column_default, :change_table, :create_table,
    :drop_table, :remove_column, :remove_columns,
    :remove_timestamps, :rename_column, :rename_table
  ]

  if !args.empty? && supported.include?(method)
    connection = ActiveRecord::Base.connection
    table_name = ActiveRecord::Migrator.proper_table_name(args[0])
    
    # Find models
    if ::AlsoMigrate.classes
      ::AlsoMigrate.classes.uniq.each do |klass|
        if klass.also_migrate_config
          klass.also_migrate_config.each do |config|
            options = config[:options]
            tables = config[:tables]
            
            next unless config[:table_name] == table_name
        
            # Don't change ignored columns
            options[:ignore].each do |column|
              next if args.include?(column) || args.include?(column.intern)
            end

            # Run migration
            config[:tables].each do |table|
              if method == :create_table
                ActiveRecord::Migrator::AlsoMigrate.create_tables(klass)
              elsif method == :add_index && !options[:indexes].nil?
                next
              elsif connection.table_exists?(table)
                args[0] = table
                args[1] = table if method == :rename_table
                begin
                  connection.send(method, *args, &block)
                rescue Exception => e
                  puts "(also_migrate warning) #{e.message}"
                end
              end
            end
          end
        end
      end
    end
  end
end