在Laravel中显示输入数组的验证错误

Question

I am submitting an array of inputs to my controller like so:

<input id="box-1-nickname" name="box-nickname[]" class="form-control" type="text" placeholder="Required">
<input id="box-2-nickname" name="box-nickname[]" class="form-control" type="text" placeholder="Required">

I am doing some validation like this:

$validator = Validator::make(Input::all(), array(
        'supplies-count' => 'required|in:0,1,2,3,4',
    ));

$arrayValidator = Validator::make(Input::all(), []);

$arrayValidator->each('box-nickname', ['required|min:1|max:60']);

if( $validator->fails() || $arrayValidator->fails() ) {
    return Redirect::route('route-2')
           ->withErrors($arrayValidator)
           ->withInput();
}

The problem is when I try to check the errors like this it doesn't work:

if( $errors->has('box-1-nickname') ) { echo ' has-error'; }

Answer 1

You've probably long found a solution, but for anyone else who stumbles across this:

The validator uses array dot notation of the field array keys. For example box-nickname[0] becomes box-nickname.0

Therefore if( $messages->has('box-nickname.0') ) { echo ' has-error'; } should give you your desired result. However, you will need to dynamically generate the array key since as you've said, you won't know how many box-nicknames are being applied. I use this in my form view:

@if(!is_null(Input::old('box-nickname')))
    @foreach(Input::old('box-nickname') as $n => $box-nickname)
        @include('box-nickname-create-form-partial')
    @endforeach
@endif

Then create a partial view called "box-nickname-create-form-partial.blade.php" or whatever you want to call it with the form field, which might look something like this:

<div class="form-group {!! $errors->has('box-nickname.'.$n) ? ' has-error' : '' !!}">
    <input name="box-nickname[{{$n}}]" class="form-control" type="text" placeholder="Required">
</div>

I hope that's helpful.