如何在Yii2迁移中将数据类型设置为longtext

Question

我使用以下代码来获取所需的属性值bodytext.数据类型应为longtext()或varchar().DBMS是MySQL.

以下代码bodytext将创建为varchar(255).为什么？

$this->createTable('mail_eingang', [
    'id' => $this->primaryKey(),
    'mail_adresse_absender' => $this->string(255)->notNull(),
    'betreff' => $this->string(255),
    'bodytext' => $this->string(), //this will actually set bodytext to varchar(255). It should be longtext() or varchar() !!
    'gelesen' => $this->smallInteger(1)->notNull()->defaultValue(0),
    'angelegt_am' => $this->datetime(),
    'angelegt_von' => $this->integer(11),
    'aktualisiert_am' => $this->datetime(),
    'aktualisiert_von' => $this->integer(11),
    'FOREIGN KEY ([[angelegt_von]]) REFERENCES person ([[id]]) ON DELETE SET NULL ON UPDATE RESTRICT',
    'FOREIGN KEY ([[aktualisiert_von]]) REFERENCES person ([[id]]) ON DELETE SET NULL ON UPDATE RESTRICT',
], $tableOptions);

Answer 1

如果64 KB足够您,您可以使用text():

'bodytext' => $this->text()

如果你真的需要一个longtext专栏,你应该使用类似的东西:

'bodytext' => $this->getDb()->getSchema()->createColumnSchemaBuilder('longtext');

或者将type指定为原始字符串:

'bodytext' => 'LONGTEXT',