Laravel & Vue validate array

I'm building a poll in Laravel 5.3 and Vue.js 1.0. A poll has several options I'm trying to validate the name of all options.

Currently my UpdateRequest in Laravel looks like this:

 public function rules()
    {
        $rules =  [
            'subject'   => 'required|max:40|min:2',
            'question'  => 'required|max:150|min:2',
            'options'   => 'required|max:4|min:2'
        ];

        foreach($this->request->get('options') as $key => $val) {
            $rules['option'][$key] = 'max:2';
        }

        return $rules;
    }

I'm adding the options like this in vue.js:

<template>
    <input
            type="text"
            name="option"
            class="Form-group-item"
            v-model="option.name"
            placeholder="Optie">

    <button class="Btn Btn-second" @click.prevent="addOption">
        Voeg optie toe
    </button>
</template>

<script>
export default {

    data () {
        return {
            option: {},
            options:  []
        }
    },

    methods: {
        addOption () {
            if(this.option.name) {
                this.options.push(this.option);
                this.option = {};
            }
        }
    }
}
</script>

When I dd($rules); it looks like this:

array:6 [
  "subject" => "required|max:40|min:2"
  "question" => "required|max:150|min:2"
  "options" => "required|max:4|min:2"
  "option.0" => "max:2"
  "option.1" => "max:2"
  "option.2" => "max:2"
]

When I dd($this->request->all()); within the UpdateRequest result is:

array:8 [
  "id" => 7
  "slug" => "asdfasdf"
  "subject" => "asdfasdf"
  "question" => "asdfasdf"
  "user_id" => 1
  "created_at" => "2016-11-15 15:24:21"
  "updated_at" => "2016-11-15 15:24:21"
  "options" => array:3 [
    0 => array:7 [
      "id" => 15
      "slug" => "asdfasdf"
      "name" => "asdfasdf"
      "poll_id" => 7
      "created_at" => "2016-11-15 15:24:21"
      "updated_at" => "2016-11-15 15:24:21"
      "votes" => []
    ]
    1 => array:7 [
      "id" => 16
      "slug" => "asdfasdfasdfasdfasdf"
      "name" => "asdfasdfasdfasdfasdf"
      "poll_id" => 7
      "created_at" => "2016-11-15 15:24:21"
      "updated_at" => "2016-11-15 15:24:21"
      "votes" => []
    ]
    2 => array:7 [
      "id" => 17
      "slug" => "efqwerqwer"
      "name" => "efqwerqwer"
      "poll_id" => 7
      "created_at" => "2016-11-15 15:48:47"
      "updated_at" => "2016-11-15 15:48:47"
      "votes" => []
    ]
  ]

How do I get this to work!?