hasOne(Uploads::class, 'id', 'paramedic_sign_id'); } public function customerSign() { return $this->hasOne(Uploads::class, 'id', 'customer_sign_id'); } public function companySign() { return $this->hasOne(Uploads::class, 'id', 'company_sign_id'); } public function file() { return $this->hasOne(Uploads::class, 'id', 'file_id'); } }