Module: ActiveRecordExtensions::ClassMethods

Defined in:
lib/rails_core_extensions/active_record_extensions.rb

Instance Method Summary collapse

Instance Method Details

#database(key) ⇒ Object

Like establish_connection but postfixes the key with the rails environment e.g. database(‘hello’) in development will look for the database

which in config/database.yml is called hello_development



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# File 'lib/rails_core_extensions/active_record_extensions.rb', line 8

def database(key)
  establish_connection("#{key}_#{Rails.env}")
end

#optional_fields(*possible_fields) ⇒ Object 



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# File 'lib/rails_core_extensions/active_record_extensions.rb', line 12

def optional_fields(*possible_fields)
  @optional_fields_loader = possible_fields.pop if possible_fields.last.is_a?(Proc)

  class << self
    def enabled_fields
      @enabled_fields || @optional_fields_loader.try(:call)
    end

    def enabled_fields=(fields)
      @enabled_fields = fields
    end
  end

  possible_fields.each do |field|
    instance_eval <<-EVAL
      def #{field}_enabled?
        enabled_fields.include?(:#{field})
      end
    EVAL
  end
end

#position_helpers_for(*collections) ⇒ Object 



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# File 'lib/rails_core_extensions/active_record_extensions.rb', line 34

def position_helpers_for(*collections)
  collections.each do |collection|
    class_eval <<-EVAL
      after_save do |record|
        record.rebalance_#{collection.to_s.singularize}_positions!
      end

      def assign_#{collection.to_s.singularize}_position(object)
        object.position = (#{collection}.last.try(:position) || 0) + 1 unless object.position
      end

      def rebalance_#{collection.to_s.singularize}_positions!(object = nil)
        reload
        #{collection}.sort_by(&:position).each_with_index do |o, index|
          if o.position != (index + 1)
            o.update_attribute(:position, index + 1)
          end
        end
      end
    EVAL
  end
end