Module: SimplyStored::Couch::HasOne

Included in:
ClassMethods
Defined in:
lib/simply_stored/couch/has_one.rb

Defined Under Namespace

Classes: Property

Instance Method Summary collapse

Instance Method Details

#define_has_one_getter(name) ⇒ Object 



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# File 'lib/simply_stored/couch/has_one.rb', line 33

def define_has_one_getter(name)
  define_method(name) do |*args|
    options = args.first && args.first.is_a?(Hash) && args.first
    if options
      options.assert_valid_keys(:force_reload, :with_deleted)
      forced_reload = options[:force_reload]
      with_deleted = options[:with_deleted]
    else
      forced_reload = false
      with_deleted = false
    end

    if forced_reload || instance_variable_get("@#{name}").nil?
      instance_variable_set("@#{name}", find_one_associated(name, self.class, :with_deleted => with_deleted))
    end
    instance_variable_get("@#{name}")
  end
end

#define_has_one_setter(name) ⇒ Object 



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# File 'lib/simply_stored/couch/has_one.rb', line 8

def define_has_one_setter(name)
  define_method("#{name}=") do |value|
    klass = self.class.get_class_from_name(name)
    raise ArgumentError, "expected #{klass} got #{value.class}" unless value.nil? || value.is_a?(klass)
    old_value = send("#{name}", :force_reload => true)
    if value.nil?
      instance_variable_set("@#{name}", nil)
    else
      instance_variable_set("@#{name}", value)
      value.send("#{self.class.foreign_key}=", id)
      value.save
    end
    
    if old_value
      if self.class._find_property(name).options[:dependent] == :destroy
        old_value.destroy
      else
        old_value.send("#{self.class.foreign_property}=", nil)
        old_value.save
      end
    end
    old_value
  end
end

#has_one(name, options = {}) ⇒ Object 



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# File 'lib/simply_stored/couch/has_one.rb', line 4

def has_one(name, options = {})
  property name, options.merge(:class => SimplyStored::Couch::HasOne::Property)
end