Symfony2 - 使用实体数据库 ID 作为表单集合数组键 [英] Symfony2 - Using the Entities database ID for Form Collections array key

问题描述

我正在构建一个表单集合，它输出的行如下:

I am building a form collection and it output's the rows like this:

<input type="number" name="order[items][1][qty]">
<input type="number" name="order[items][2][qty]">

但我想做的是有这个:

<input type="number" name="order[items][DB_ID_1][qty]">
<input type="number" name="order[items][DB_ID_2][qty]">

DB_ID_1 将是数据库记录 ID 的数值.所以我可以像这样打印模板中的每一行:

DB_ID_1 would be a numeric value of the database record ID. So I can print out each row in my template like this:

{{ form.items.1 }}

所以它打印出 ID 为 1 的数据库记录的表单元素，当前它打印出键为 1 的元素，例如可能具有 9 的真实数据库 id

So it prints the form element out for the database record with ID 1, currently it prints out the element for the key of 1 which could have the real database id of 9 for example

需要更多信息，请告诉我.谢谢

Any more information required please let me know. Thanks

推荐答案

我终于在这篇文章的帮助下找到了答案嵌入表单集合 Symfony2表单允许添加和删除

I have finally found the answer with the help of this post Embedding a collection of forms Symfony2 forms with adding and deleting allowed

这是一个如此简单的解决方案 - 我找错了地方，我需要在我的自定义类存储库中使用 INDEX BY x.id，如下所示:

It was such a simple solution - I was looking in the wrong place, I needed to use INDEX BY x.id in my custom Class Repository like so:

$em->createQuery("SELECT f FROM ExampleCoreBundle:Folder f INDEX BY f.id WHERE f.uid = :uid");

这返回了我的 Folder 对象数组，数组的键是文件夹的数据库记录的 id 字段.

This returned my array of Folder objects back with the keys of the array being the database record's id field for the folder.

这现在可以很好地与我最初想要的表单集合配合使用 - 我很确定此信息不在网站的表单集合"页面上，所以希望这对将来的其他人有所帮助！

This now works fine with the Form Collections as I originally wanted - I am pretty sure this information is not on the Form Collections page on the website so hope this helps anyone else in future!

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