使用JavaScript获取表单的上一个值以创建下一个

Question

Probably best if I show you what I have first. I am using PHP/MySQL and Laravel 5.

<div class="form-group">
    <p><b>Assign a category:</b></p>
    @foreach (App\Http\Models\GalleryCategories::all() as $category)            
        {!! Form::label('category_id', $category->name) !!}
        {!! Form::checkbox('category_id', $category->id, null, ['class' => 'field']) !!}                
    @endforeach
</div>

That part gets some categories from the database, loops through and creates a series of radio boxes so that the uploader can select one. Only one.

However what I need is some code, I am told JavaScript is best to get the ID of the category the uploader has selected in order to then do another loop for sub category list connected to the category.

Of course the issue is that I need to pass the category ID the user has chosen before the form is submitted. In effect I need to have the $category_id available as soon as the person selects one in order to then generate the next set of radio boxes.

Anyone ideas how to do that?

Answer 1

我知道了，它使用一些JavaScript来设置将ID传递给表单下一部分的onclick事件。