How to validate array input fields?

Hi!

Im working on kinda big form, where i insert a bunch of data from 10 fields and two radio buttons. The last four input fields are basic type="text" fields, and contains similar data. These fields should be stored in a separate table in the database. And I know I have done it before, to array the fields. But I'm having trouble with validations and errors.

I have copy'n pasted just two fields for the convenience. The fields looks like this:

    <div class="form-group {{ $errors->has('choices[]') ? 'has-error' : '' }}">
        <label class="control-label" for="choices[]">Svarsalternativ ett <span class="text-success">(rätt svar)</span></label>
        <input class="form-control" id="choices[]" name="choices[]" type="text" value="{{old('choices[]')}}" placeholder="20 000" />
        @if ($errors->has('choices[]'))
            <span class="help-block">
                <strong>{{ $errors->first('choices[]') }}</strong>
            </span>
        @endif
    </div>

    <div class="form-group {{ $errors->has('choices[]') ? 'has-error' : '' }}">
        <label class="control-label" for="choices[]">Svarsalternativ två <span class="text-danger">(fel)</span></label>
        <input class="form-control" id="choices[]" name="choices[]" type="text" value="{{old('choices[]')}}" placeholder="66 400" />
        @if ($errors->has('choices[]'))
            <span class="help-block">
                <strong>{{ $errors->first('choices[]') }}</strong>
            </span>
        @endif
    </div>

But how about the validation of array inputs? I have removed some of the fields for convenience and keeps the type_of_content that is a radio button, to detarmain what type of information that is sent thru.

 $this->validate($request, [
            'type_of_content' => 'present',
            'choices[]' => 'required_unless:type_of_content,is_information',
        ]);

As you can see, I want to validate each input. But I can get it to work?

Thanks in advance.

ps. every key stroke I made while typing doing this thread made the screen scroll upwards, very enoying @JeffreyWay

ps2. great site otherwise