playframework .json模板List-Ojects与foreach? [英] playframework .json template List-Ojects with foreach?

问题描述

我的问题是:我不想在json响应中返回整个模型对象的结构和数据. renderJSON()从响应中返回模型中的所有内容.

My Problem is: I don't want to return the whole model object structure and datas in a json response. renderJSON() returns everything from the model in the response.

所以我认为最好的方法是使用* .json模板.好的，现在我有了一个列表，现在我不再需要* .json-template中的语法了.

So I thought the best way would be to use *.json templates. Ok and now I have a List and I don't now how the syntax in the *.json-template must be.

控制器的一部分:

List<User> users = User.find("byActive", true).fetch();
if (users != null) {
    render(users);
}

"User/showAll.json"(模板):

"User/showAll.json" (template):

//something like foreach( User currentUser in users )
{
    "username": "${currentUser.name}",
    "userdescr": "${currentUser.description}"
}

对于单个用户没问题，我明白了，但是json模板中的用户列表看起来如何?

For a single user it's no problem, I got it, but how does it look like for a List of users inside the json template?

推荐答案

[
#{list users}
  {
      "username": "${_.name}",
      "userdescr": "${_.description}"
  } #{if !_isLast},#{/if}
#{/list}
]

检查 http://www.playframework.org/documentation/1.2.4 /tags#list 了解更多信息

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