告诉学说一个字段可以为空

Tell doctrine that a field can be null(告诉学说一个字段可以为空)

问题描述

我必须在学说实体的注释中输入什么.

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

其实是这样的……

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

我必须告诉教义诸如 canBeNull=true 之类的东西.否则我总是收到此错误 SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'name' cannot be null

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

但是代码是什么?

推荐答案

在 COLUMN 属性中定义属性 nullable 为 true.

Define the attribute nullable in the COLUMN property with true.

例子:

/**
 * @ORMColumn(type="string", length=255, nullable=true)
 *
 * @AssertLength(
 *     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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