<?php namespace GermanAirlinesVa\Schooling\Models;

use Model;

/**
 * Model
 */
class ExamMemberRankAnswer extends Model
{
  use \October\Rain\Database\Traits\Validation;

  /*
   * Disable timestamps by default.
   * Remove this line if timestamps are defined in the database table.
   */
  public $timestamps = false;

  /**
   * @var string The database table used by the model.
   */
  public $table = 'exam_answers';
  protected $connection = 'germanairlinesva_schooling';

  /**
   * @var array Validation rules
   */
  public $rules = [
    'exam_question' => 'required',
    'text' => 'required',
    'is_correct' => 'required',
  ];

  public $belongsTo = [
    'exam_question' => ['GermanAirlinesVa\Schooling\Models\ExamMemberRankQuestion', 'key' => 'exam_question_id'],
  ];

  public $belongsToMany = [
    'exam_member_ranks' => [
      'GermanAirlinesVa\Schooling\Models\ExamMemberRank',
      'table' => 'exam_exam_answer_exam_question',
      'key' => 'exam_answer_id',
      'otherKey' => 'exam_id',
    ],
  ];

  /**
   * The "booting" method of the model.
   *
   * @return void
   */
  protected static function boot()
  {
    parent::boot();

    static::addGlobalScope('exam_member_rank_answer_member_rank_id', function ($builder) {
      $builder->whereHas('exam_question', function ($query) {
        $query->where('member_rank_id', '<>', null);
      });
    });
  }
}