告诉一个字段可以为null的原则 [英] Tell doctrine that a field can be null

问题描述

其实就是这样...

  / ** 
 * @ ORM\Column（type =string，length = 255）
 * 
 * @ Assert\\ \\ Length（
 * min = 3，
 * max = 255，
 * minMessage =名称太短，
 * maxMessage =名称太长。，
 * groups = {注册，个人资料} 
 *）
 * / 
 protected $ name; 
  

我必须告诉学说，像 canBeNull = true 。其他的我总是得到这个错误 SQLSTATE [23000]：完整性约束违反：1048列'名称'不能为空

但是代码如何？

解决方案

在COLUMN属性中定义可空

示例：

  / ** 
 * @ ORM\Column（type =string，length = 255，nullable = true）
 * 
 * @ Assert\Length（
 * min = 
 * max = 255，
 * minMessage =名称太短，
 * maxMessage =名称太长，
 * groups = {注册，个人资料} 
 *）
 * / 
 protected $ name; 
  

What do I have to enter in the annotation of a doctrine entity.

Its actually like this...

/**
 * @ORM\Column(type="string", length=255)
 *
 * @Assert\Length(
 *     min=3,
 *     max=255,
 *     minMessage="The name is too short.",
 *     maxMessage="The name is too long.",
 *     groups={"Registration", "Profile"}
 * )
 */
protected $name;

I have to tell doctrine something like canBeNull=true. Otherwhise I always get this error SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'name' cannot be null

But whats the code?

解决方案

Define the attribute nullable in the COLUMN property with true.

Example:

/**
 * @ORM\Column(type="string", length=255, nullable=true)
 *
 * @Assert\Length(
 *     min=3,
 *     max=255,
 *     minMessage="The name is too short.",
 *     maxMessage="The name is too long.",
 *     groups={"Registration", "Profile"}
 * )
 */
protected $name;

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