我有这个模型：
案件：
class Cases extends Model {
const UPDATED_AT = 'edit_date';
const CREATED_AT = 'crt_date';
protected $primaryKey = 'no';
protected $guarded = ['no'];
protected $table = 'assist';
public function providers() {
return $this->hasMany('App\CaseProviders', 'case_no');
}
public function claims() {
return $this->hasMany('App\Claim', 'reference_no');
}
}
案例提供者：
class CaseProviders extends Model {
public function detail() {
//return $this->hasOne('App\Providers', 'code', 'code')->select(['code', 'name']);
return $this->hasOne('App\Providers', 'code', 'code');
}
}
提供商：
class Providers extends Model {
protected $table = 'user_cards';
public function country() {
return …