module ActiveRecordExtensions::ClassMethods

Public Class Methods

enabled_fields() click to toggle source
# File lib/rails_core_extensions/active_record_extensions.rb, line 40
def enabled_fields
  @enabled_fields || @optional_fields_loader.try(:call)
end
enabled_fields=(fields) click to toggle source
# File lib/rails_core_extensions/active_record_extensions.rb, line 44
def enabled_fields=(fields)
  @enabled_fields = fields
end

Public Instance Methods

database(key) click to toggle source

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
# File lib/rails_core_extensions/active_record_extensions.rb, line 10
def database(key)
  establish_connection("#{key}_#{Rails.env}")
end
enum_int(field, values, options = {}) click to toggle source
# File lib/rails_core_extensions/active_record_extensions.rb, line 14
    def enum_int(field, values, options = {})
      const_set("#{field.to_s.upcase}_OPTIONS", values)

      select_options = values.map.with_index{|v, i| [v.to_s.humanize, i]}
      const_set("#{field.to_s.upcase}_SELECT_OPTIONS", select_options)

      values.each.with_index do |value, i|
        const_set("#{field.to_s.upcase}_#{value.to_s.upcase}", i)
        method_name = options[:short_name] ? "#{value}?" : "#{field}_#{value}?"
        class_eval <<-ENUM
          def #{method_name}
            #{field} == #{i}
          end
        ENUM
      end
      class_eval <<-ENUM
        def #{field}_name
          #{field.to_s.upcase}_OPTIONS[#{field}]
        end
      ENUM
    end
optional_fields(*possible_fields) click to toggle source
# File lib/rails_core_extensions/active_record_extensions.rb, line 36
    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) click to toggle source
# File lib/rails_core_extensions/active_record_extensions.rb, line 58
    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