渲染json和嵌套属性

Question

我有这些课程：

class Product
 attr_accessible :name, ...
 has_many :images
end

class Image
 attr_accessible :image, :position, :product_id, :title
 belongs_to :product
end

动作：

def list
  render :json => {:Result => "OK", :Records => Product.all}
end

如何将每个产品的自己的图像作为嵌套属性包含在内，而不是枚举产品中的所有属性？

Answer 1

您可以使用to_json(:include => :attr)

def list
  render :json => {:Result => "OK", :Records => Product.all}.to_json(:include => :images)
end