<?php


namespace App\Models;


class CourseContent extends SoftDeletesModel
{
    protected $casts = ['publicize_ids' => 'json'];

    protected $appends = ['publicize'];

    public function getPublicizeAttribute($value)
    {
        if (empty($this->publicize_ids)) return [];
        return Upload::whereIn('id', $this->publicize_ids)->get();
    }

    public function course()
    {
        return $this->hasOne(Course::class, 'id', 'course_id');
    }

    public function coursePeriod()
    {
        return $this->hasOne(CoursePeriod::class, 'id', 'course_period_id');
    }

    public function courseSetting()
    {
        return $this->hasOne(CourseSetting::class, 'id', 'course_setting_id');
    }

    public function teacher()
    {
        return $this->hasOne(Teacher::class, 'id', 'teacher_id');
    }

    public function courseKeeps()
    {
        return $this->hasMany(CourseKeep::class, 'course_content_id', 'id');
    }

    public function courseSigns()
    {
        return $this->hasMany(CourseSign::class, 'course_id', 'course_id');
    }

    public function courseContentEvaluationAsks()
    {
        return $this->hasMany(CourseContentEvaluationAsk::class, 'course_content_id', 'id');
    }

    public function courseContentEvaluationForms()
    {
        return $this->hasMany(CourseContentEvaluationForm::class, 'course_content_id', 'id');
    }

}