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Contents
module HasOptions
def has_option(*names)
unless respond_to?(:option_definitions)
include InstanceMethods
class_inheritable_accessor :option_definitions
self.option_definitions = {}
serialize :options
end
definition = names.extract_options!
names.map(&:to_sym).each do |name|
self.option_definitions[name] = definition
class_eval <<-rb, __FILE__, __LINE__
def #{name}
self.options ||= {}
options.key?(:#{name}) ? options[:#{name}] : option_default(:#{name})
end
# alias #{name}_before_type_cast #{name}
def #{name}=(value)
options_will_change!
self.options ||= {}
options[:#{name}] = option_type_cast(:#{name}, value)
end
rb
end
end
module InstanceMethods
OPTION_DEFAULTS = { :default => nil, :type => :string }
[:type, :default].each do |reader|
define_method(:"option_#{reader}") do |name|
self.class.option_definitions[name].key?(reader) ? self.class.option_definitions[name][reader] : OPTION_DEFAULTS[reader]
end
end
define_method :option_type_cast do |name, value|
return nil if value.nil?
case option_type(name)
when :string then value.to_s
when :integer then value.to_i rescue value ? 1 : 0
when :float then value.to_f
when :datetime then ActiveRecord::ConnectionAdapters::Column.string_to_time(value)
when :time then ActiveRecord::ConnectionAdapters::Column.string_to_dummy_time(value)
when :date then ActiveRecord::ConnectionAdapters::Column.string_to_date(value)
when :boolean then ActiveRecord::ConnectionAdapters::Column.value_to_boolean(value)
else value
end
end
end
end
ActiveRecord::Base.extend(HasOptions)
Version data entries
8 entries across 8 versions & 1 rubygems