# 混合耦合的与解耦的逻辑

即使启用，解耦的模板逻辑也不是必须的。启用时，引擎会寻找包含解耦的逻辑的资源。如果它存在，就会解析它，并把它和原始的模板合并。如果解耦的逻辑资源不存在，不会抛出错误。

并且，在同一个模板里，我们可以混合耦合的与解耦的逻辑。比如，将一些Thymeleaf属性添加到原始的模板文件，而把另一些留在独立的解耦的逻辑文件里。最通常的情况是使用新的（v3.0）`th:ref`属性。


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