如何自定义“多倍” SYMFONY中选择标签的属性
我正在使用Symfony 4和 virtual select 插件，用于下拉插件，使用虚拟滚动”。
默认情况下，当Symfony呈现多个选择时，HTML代码看起来像这样：
<select multiple="multiple">
但是，Virtual Select似乎非常挑剔，并且只有当多个属性没有值的情况下才能正确地行为，例如：（
<select multiple>
就我而言，它知道，是“官方”语法，多=“多个”未提及 mozilla
。 ：
- 编写整个HTML本人并不实用，因为它很长（因此选择）。
- 我尝试在JavaScript中传递“多个”选项，如所述在这里，但是如果HTML中仍然存在错误的语法的多个属性，那将没有效果。
- 我可以替换虚拟选择，但是我不想在其他许多地方使用它，因为它已经使用了。
I'm using Symfony 4 and Virtual Select, "A javascript plugin for dropdown with virtual scroll".
By default, when Symfony renders a multiple select, the HTML code looks like this :
<select multiple="multiple">
However, Virtual Select seems very picky, and only behaves properly if the multiple attribute doesn't have a value, like this :
<select multiple>
(Which, as far as I know, is the "official" syntax, multiple="multiple" isn't mentioned by Mozilla for example.)
Is there there a way to force Symfony to use the second syntax instead of the first ?
I thought of a few workaround which wouldn't work :
- Writing the whole HTML myself wouldn't be practical as it is very long (hence Virtual Select).
- I tried passing the "multiple" option in Javascript as described here, but that has no effect if the the multiple attribute with the wrong syntax is still present in the HTML.
- I could replace Virtual Select, but I would rather not as it is already used in many other places.
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最后，我在JavaScript中使用了一个解决方法：
似乎满足虚拟选择。
（然后，我不得不为虚拟选择和符号之间的其他问题堆积更多解决方法。总而言之，您可能应该避免将这两者一起使用。）
In the end I used a workaround in javascript :
Which seems to satisfy Virtual Select.
(And then I had to pile up more workarounds for other issues between Virtual Select and Symfony. All in all, you probably should avoid using those two together.)