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Adds suppport for ActiveModel::Dirty and ::AttributeMethods

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* ActiveModel::Dirty
** Basic support for dirty tracking
** It does not bubble up any changes to casted models currently

* ActiveModel::AttributeMethods
** Attributes are now read and written through ActiveModel
** This also allows you to add your own attribute methods with
   prefix suffix and affix names. For more information check out
   ActiveModel::AttributeMethods::ClassMethods
This commit is contained in:
Will Leinweber 2010-09-16 17:24:43 -05:00
parent 5c21de8586
commit d333133319
12 changed files with 333 additions and 124 deletions
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54
lib/couchrest/model/properties.rb
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@ -1,4 +1,5 @@
# encoding: utf-8
require 'set'
module CouchRest
module Model
module Properties
@ -22,16 +23,6 @@ module CouchRest
self.class.properties
end
def read_attribute(property)
prop = find_property!(property)
self[prop.to_s]
end
def write_attribute(property, value)
prop = find_property!(property)
self[prop.to_s] = prop.cast(self, value)
end
def apply_all_property_defaults
return if self.respond_to?(:new?) && (new? == false)
# TODO: cache the default object
@ -94,8 +85,7 @@ module CouchRest
type = [type] # inject as an array
end
property = Property.new(name, type, options)
create_property_getter(property)
create_property_setter(property) unless property.read_only == true
create_property_alias(property) if property.alias
if property.type_class.respond_to?(:validates_casted_model)
validates_casted_model property.name
end
@ -103,49 +93,15 @@ module CouchRest
property
end
# defines the getter for the property (and optional aliases)
def create_property_getter(property)
# meth = property.name
def create_property_alias(property)
class_eval <<-EOS, __FILE__, __LINE__ + 1
def #{property.name}
read_attribute('#{property.name}')
def #{property.alias.to_s}
#{property.name}
end
EOS
if ['boolean', TrueClass.to_s.downcase].include?(property.type.to_s.downcase)
class_eval <<-EOS, __FILE__, __LINE__
def #{property.name}?
value = read_attribute('#{property.name}')
!(value.nil? || value == false)
end
EOS
end
if property.alias
class_eval <<-EOS, __FILE__, __LINE__ + 1
alias #{property.alias.to_sym} #{property.name.to_sym}
EOS
end
end
# defines the setter for the property (and optional aliases)
def create_property_setter(property)
property_name = property.name
class_eval <<-EOS
def #{property_name}=(value)
write_attribute('#{property_name}', value)
end
EOS
if property.alias
class_eval <<-EOS
alias #{property.alias.to_sym}= #{property_name.to_sym}=
EOS
end
end
end # module ClassMethods
end
end
end