根据 thymeleaf 中的其他变量选择上下文变量属性(动态) [英] select context variables properties based on other variables in thymeleaf (dynamically)

问题描述

我是使用 Thymeleaf 的初学者.我有一个设置为上下文变量的对象.ctx.setVariable("name", myObject);

I am a beginner in using Thymeleaf. I have an object which is set as a context variable. ctx.setVariable("name", myObject);

这个对象有几个属性，但我不能只使用`name.property1.subproperty1'

this object has several properties, but I can't just select them using `name.property1.subproperty1'

因为在某些时候我想在同一个模板中呈现 name.property1.subproperty 和 name.property2.subproperty，并且我不想对此进行硬编码模板中的选择，因为它可能会改变.

because at some point I want to render name.property1.subproperty and name.property2.subproperty in the same template, and I don't want to hardcode this selection in the template because it might change.

我想声明另一个上下文变量，例如:

I was thinking to declare another context variable like:

String[] listOfProperties = {"property1", "property2"};ctx.setVariable("properties", listOfProperties);

并在模板中做类似的事情:

and do something like that in the template:

${myObject.?[listOfProperties[0]].subproperty1}${myObject.?[listOfProperties[1]].subproperty2}

换句话说，我想从java代码中控制要呈现的属性.我有属性模板，我不想为相同类型创建更多模板，因为如果我将属性模板包含到 myObject Template 中，它只会被渲染一次，这就是我选择这种方法的原因.

In other words, I want to control from java code what property to be renderd. I have templates for properties and I don't want to create more templates for the same type, because if I include the property template into myObject Template it is going to be rendered only once, that is why I chose this approach.

对不起，我不知道更好地解释......谢谢.

I am sorry I don't know to explain better... Thanks.

推荐答案

使用以下语法(请参阅:4.12 预处理):

Use the following syntax (see: 4.12 Preprocessing):

${myObject.?__${listOfProperties[0]}__.subproperty1} ${myObject.?__${listOfProperties[1]}__.subproperty2}

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