'array', ]; public function createdBy(): \Illuminate\Database\Eloquent\Relations\BelongsTo { return $this->belongsTo(User::class, "created_by"); } public function histories() { return $this->hasMany(History::class); } public function file(): HasOne { return $this->hasOne(File::class, "object_id")->where("object_type", FileObjectType::ACTION); } }