树枝-为什么不允许我们设置对象/数组值? [英] Twig - Why does it not allow us to set object / array values?

问题描述

Twig决定不允许通过 set 设置数组和对象属性的值，这让我感到非常困惑.

I'm extremely confused by the decision of Twig to not allow setting values of arrays and object properties via set.

例如，以下代码将出错:

For example, the following code will error out:

{％set entry.depth = 1％}

将导致错误:

值"的意外标记标点".(预计为语句块结尾")

以下方法也会出错(我知道树枝不喜欢使用):

Also the following way will also error (which I know twig doesn't prefer to use):

{％set entry ['depth'] = 1％}

因此，这实际上意味着我们无法更改对象和数组的属性.坦率地说，我很奇怪.

So this effectively means we're unable to change properties of objects and arrays. I quite frankly find this bizarre.

有人可以解释一下背后的决定吗?也许，如果我有技术上的理由无法做到这一点，那可能会使它感到莫名其妙.

Can someone please explain the decision behind this? Maybe if I get a technical reason why it's not possible it might make it less baffling.

感谢您的解决方案，我更想知道您必须使用合并而不是简单地能够覆盖变量这一事实.

Thanks for the solution, I was more after the reasoning behind the fact you have to use merge rather than just simply being able to override variables.

推荐答案

在这方面，Twig有点奇怪.您需要为此使用 merge 过滤器.

Twig's a bit weird in this regard. You'll need to use the merge filter for this.

{% set entry = entry|merge({'depth': 1}) %}

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