独特性验证失败 - 符合性

Question

让我有两个实体college和department，大学有许多部门（一个一对下）。我的验证。看起来像

AppCollegeBundleEntityCollege:
        - departments:
            - Valid: ~
AppCollegeBundleEntityDepartment:
    constraints:
        - SymfonyBridgeDoctrineValidatorConstraintsUniqueEntity:
            fields: [department_name, HOD ]

当我试图与N-N-NMBER部门Unique Entity验证合作的大学实体持续下去时，稍后我试图将另一个新的department实体添加到college实体中，并坚持unique entity验证失败，我遇到了unique key violation，我犯了什么错误，我犯了什么错误？

我在CSV文件的每一行中使用csv import功能，例如，我在控制器中进行了一个ajax调用

 $department = new Department()     
if( isset( $record["department_name"] )  && strlen( trim( $record["department_name"] ) ) > 0 )
{
   $department->setDepartmentName($record["department_name"] );
}
if( isset( $record["hod"] )  && strlen( trim( $record["hod"] ) ) > 0 )
{
   $department->setHod($record["hod"] );
}
//set college
$department->setCollege($college)
//adding departments
$college->addDepartment($department)
$validate = $this->get('validator')->validate($college);
if($validate->count())
{
   return [ "status" => "error" ]
}
else
{
   $em = $this->getDoctrine()->getManager();
   $em->persist($college);
   $em->flush();
   return [ "status" => "success" ];
 }

Answer 1

如果您不创建新的大学（因此您已经拥有大学实体），但只有一个新的部门尝试以下方法：

//set college
$department->setCollege($college)
$validate = $this->get('validator')->validate($department);
if($validate->count())
{
   return [ "status" => "error" ]
}
else
{
   $em = $this->getDoctrine()->getManager();
   $em->persist($department);
   $em->flush();
   return [ "status" => "success" ];
 }

相反，如果您正在创建一所新大学，我也建议您首先创建一所新大学，坚持下去并冲洗，拿起ID并创建新的部门