ruby-on-rails - Rails ActiveModel 序列化程序呈现非空属性

Question

我想使用一个呈现非空属性的序列化程序

     class PersonSerializer < ActiveModel::Serializer
        attributes :id, :name, :phone, :address, :email
     end

这可能吗。

非常感谢。

解决方案:

 class PersonSerializer < ActiveModel::Serializer
    attributes :id, :name, :phone, :address, :email
    def attributes
     hash = super
     hash.each {|key, value|
      if value.nil?
      hash.delete(key)
     end
    }
    hash
   end
  end

Answer 1

从版本 0.10.x 的 active_model_serializer gem，你必须重写方法serializable_hash而不是 attributes :

# place this method inside NullAttributesRemover or directly inside serializer class
def serializable_hash(adapter_options = nil, options = {}, adapter_instance = self.class.serialization_adapter_instance)
  hash = super
  hash.each { |key, value| hash.delete(key) if value.nil? }
  hash
end