我正在使用Active Model Serializers v0.10.0.rc4
我想生成看起来像这样的json:
{
"posts": [
{ "post": {"id": 2, "name": "foo"} },
{ "post": {"id": 3, "name": "bar"} }
],
"next_page": 3
}
我知道基本的:
render json: posts, each_serializer: PostSerializer
将产生这样的json:
[
{"id": 2, "name": "foo"}
{"id": 3, "name": "bar"}
]
我尝试过以下方法:
控制器:
render json: posts, serializer: PostsSerializer
posts_serializer:
class PostsSerializer < ActiveModel::Serializer
attributes :posts, :next_page
def posts
ActiveModel::Serializer::CollectionSerializer.new(object,
each_serializer: PostSerializer,
root: "post"
)
end
def next_page
3
end
end
但这会产生像这样的json:
{
"posts": [
{
"object": {"id": 2, "name": "foo"},
"instance_options": {"each_serializer: {}", "root": "post" }
},
{
"object": {"id": 3, "name": "bar"},
"instance_options": {"each_serializer: {}", "root": "post" }
},
],
"next_page": 3
}
任何人都知道如何实现所需的架构?
最佳答案 最后我没有使用CollectionSerializer.这就是我的选择:
控制器:
render json: posts, serializer: PostsSerializer
posts_serializer:
class PostsSerializer < ActiveModel::Serializer
attributes :posts, :next_page
def posts
object.map do |p|
ActiveModel::SerializableResource.new(p, adapter: :json)
end
end
def next_page
# todo
end
end
指定json适配器可确保post元素具有所需的根节点.
虽然我知道为阵列项指定根节点可能不是常规的,但是这个api需要它.