使用twig变量动态调用导入的宏子函数 [英] Using twig variable to dynamically call an imported macro sub-function
问题描述
我正在尝试是否使用变量来调用特定的宏名称.
I am attempting if use a variable to call a specific macro name.
我有一个正在导入的宏文件
I have a macros file that is being imported
{% import 'form-elements.html.twig' as forms %}
现在在那个文件中有所有的表单元素宏:text、textarea、select、radio等
Now in that file there are all the form element macros: text, textarea, select, radio etc.
我有一个传入的数组变量,其中包含一个元素:
I have an array variable that gets passed in that has an elements in it:
$elements = array(
array(
'type'=>'text,
'value'=>'some value',
'atts'=>null,
),
array(
'type'=>'text,
'value'=>'some other value',
'atts'=>null,
),
);
{{ elements }}
我想做的是从宏中生成这些元素.当按名称调用时,它们工作得很好:
what im trying to do is generate those elements from the macros. they work just fine when called by name:
{{ forms.text(element.0.name,element.0.value,element.0.atts) }}
但是我想做的是这样的:
However what i want to do is something like this:
{% for element in elements %}
{{ forms[element.type](element.name,element.value,element.atts) }}
{% endfor %}
我尝试了以下所有方法都导致相同的错误:
I have tried the following all resulting in the same error:
{{ forms["'"..element.type.."'"](element.name,element.value,element.atts) }}
{{ forms.(element.type)(element.name,element.value,element.atts) }}
{{ forms.{element.type}(element.name,element.value,element.atts) }}
不幸的是,这会引发以下错误:
This unfortunately throws the following error:
Fatal error: Uncaught exception 'LogicException' with message 'Attribute "value" does not exist for Node "Twig_Node_Expression_GetAttr".' in Twig\Environment.php on line 541
任何有关解决方案或更好的架构的帮助或建议都会非常有帮助.
Any help or advice on a solution or a better schema to use would be very helpful.
推荐答案
我只是想其他人可能想要这个答案,正如 fabpot 提供的:
I just thought other people may want the answer to this, as provide by fabpot:
这确实是不支持的:调用具有动态名称的宏(我添加了一个适当的例外以更清楚地说明问题).
This is indeed something that is not supported: calling a macro with a dynamic name (I have added a proper exception to be clearer about the issue).
如果您真的想这样做,可以使用以下代码:
If you really want to do that, you can do so with the following code:
{{ attribute(forms, element.type, [element.name,element.value,element.atts]) }}
{{ attribute(forms, element.type, [element.name,element.value,element.atts]) }}
-fabpot
https://github.com/twigphp/Twig/issues/922#issuecomment-11133299
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