test/app/Http/Requests/Site/SocialSaveRequest.php

<?php

namespace App\Http\Requests\Site;

use App\Http\Requests\Request;

class SocialSaveRequest extends Request
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {

        if (!$this->ajax()) {
            return [];
        }

        switch ($this->input('type')) {
            case 'pin':
                return [
                    'pin.app_id' => 'nullable',
                    'pin.app_secret' => 'nullable',
                    'pin.redirect_url' => 'nullable'
                ];
            case 'twitter':
                return [
                    'twitter.app_id' => 'nullable',
                    'twitter.app_secret' => 'nullable',
                    'twitter.token' => 'nullable',
                    'twitter.token_secret' => 'nullable',
                ];
            case 'facebook':
                return [
                    'facebook.facebook_page' => 'required'
                ];
            case 'linkedIn':
                return [
                    'linkedIn.linkedin_orgid' => 'nullable'
                ];
            default:
                return [];

        }

    }

//    public function attributes()
//    {
//        $pin = [
//            'pin.app_id' => '',
//            'pin.app_secret' => '',
//            'pin.redirect_url' => '',
//        ];
//
//        $twitter = [
//            'twitter.app_id' => '',
//            'twitter.app_secret' => '',
//            'twitter.token' => '',
//            'twitter.token_secret' => '',
//        ];
//
//        return array_merge($pin, $twitter);
//    }
}