couchrest_model/lib/couchrest/mixins/properties.rb
Matt Aimonetti 83d7341553 Started on the ExtendedDocument class with features moved to mixins.
Properties got added, they define getters, setters and aliases.
They will also be the base of the new validation system.
2009-02-02 14:51:41 -08:00

63 lines
1.7 KiB
Ruby

module CouchRest
module Mixins
module DocumentProperties
def self.included(base)
base.extend(ClassMethods)
end
module ClassMethods
# Stores the class properties
def properties
@@properties ||= []
end
# This is not a thread safe operation, if you have to set new properties at runtime
# make sure to use a mutex.
def property(name, options={})
unless properties.map{|p| p.name}.include?(name.to_s)
property = CouchRest::Property.new(name, options.delete(:type), options)
create_property_getter(property)
create_property_setter(property) unless property.read_only == true
properties << property
end
end
protected
# defines the getter for the property
def create_property_getter(property)
meth = property.name
class_eval <<-EOS
def #{meth}
self['#{meth}']
end
EOS
if property.alias
class_eval <<-EOS
alias #{property.alias.to_sym} #{meth.to_sym}
EOS
end
end
# defines the setter for the property
def create_property_setter(property)
meth = property.name
class_eval <<-EOS
def #{meth}=(value)
self['#{meth}'] = value
end
EOS
if property.alias
class_eval <<-EOS
alias #{property.alias.to_sym}= #{meth.to_sym}=
EOS
end
end
end # module ClassMethods
end
end
end