我的 Model 有三层，从上到下是 Place，Guide，Story
class Place < ActiveRecord::Base
has_many :guides, :dependent => :destroy
def as_json(options={})
options[:except] ||= [:created_at, :updated_at]
options[:include] ||= [:guides]
super(options)
end
end
class Guide < ActiveRecord::Base
belongs_to :place
has_many :stories, :dependent => :destroy
def as_json(options={})
options[:except] ||= [:created_at, :updated_at]
options[:include] ||= [:stories]
super(options)
end
end
如果 render :json => @places 的话，只有第一层，即 Place.as_json 生效，Guide.as_json 根本不会被调用。 这咋办啊，知道请指点，谢了先！
谢谢 @vkill，插件还没来得及看。有一个不用插件的方法是这样的，给每个 Model 都显式写个 as_json_options 方法
class Place < ActiveRecord::Base
has_many :guides, :dependent => :destroy
def as_json_options
@options={}
@options[:except] ||= [:created_at, :updated_at]
@options[:include] ||= [:guides => Guide.as_json_options]
return @options
end
def as_json(options={})
super(as_json_options)
end
end
class Guide < ActiveRecord::Base
belongs_to :place
has_many :stories, :dependent => :destroy
def Guide.as_json_options
options = {}
options[:except] ||= [:created_at, :updated_at, :keywords]
options[:include] ||= [:stories => Story.as_json_options]
return options
end
end