einundzwanzig-portal/app/Models/Event.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Event extends Model
{
    use HasFactory;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'course_id',
        'venue_id',
        'from',
        'to',
    ];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'id' => 'integer',
        'course_id' => 'integer',
        'venue_id' => 'integer',
        'from' => 'datetime',
        'to' => 'datetime',
    ];

    public function course(): \Illuminate\Database\Eloquent\Relations\BelongsTo
    {
        return $this->belongsTo(Course::class);
    }

    public function venue(): \Illuminate\Database\Eloquent\Relations\BelongsTo
    {
        return $this->belongsTo(Venue::class);
    }
}