'integer', 'course_id' => 'integer', 'venue_id' => 'integer', 'from' => 'datetime', 'to' => 'datetime', ]; protected static function booted() { static::creating(function ($model) { $model->created_by = auth()->id(); }); } public function createdBy(): \Illuminate\Database\Eloquent\Relations\BelongsTo { return $this->belongsTo(User::class, 'created_by'); } 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); } public function registrations(): \Illuminate\Database\Eloquent\Relations\HasMany { return $this->hasMany(Registration::class); } }