Rails JSON多个嵌套关联

Question

我有一个对象列表,测试,其中包含问题和奖金问题,每个问题都有一个主题模型.我试图将所有这些包含在JSON API中,但我不断收到奇怪的难以理解的语法错误消息.我可以使用问题和主题或奖励问题和主题,但不是两者.这就是我现在拥有的:

render json: tests.as_json(:include => {:questions =>{:include => {:subject}},:bonuses => {:include => {:subject}}})

我得到的错误信息是

/app/controllers/test_controller.rb:49:语法错误,意外'}',期待=> ... ssups => {:include => {:subject}},:bonuses => {:include => {: ...... ^ /app/controllers/question_set_controller.rb:49:语法错误,意想不到的 '}',期望=> ...采用=> {:包括=> {:受试者}}})... ^ /app/controllers/question_set_controller.rb:76:语法错误,意外的输入结束,期待keyword_end

提前致谢.

Answer 1

你有一对额外的括号包裹一个符号.这不是有效的Ruby哈希语法.它应该是

render json: tests.as_json(:include => {:questions => {:include => :subject}, :bonuses => {:include => :subject}})