Add migration file example for DbSession (#14227) [skip ci]

Creating a `char` primaryKey in a migration is non-obvious. Used solution from this [issue comment](https://github.com/yiisoft/yii2/issues/10889#issuecomment-302995086).
This commit is contained in:
Victor Heng
2017-05-29 14:41:00 +08:00
committed by Alexander Makarov
parent e2218cbbae
commit 85294ab4e3

View File

@ -178,6 +178,31 @@ where 'BLOB' refers to the BLOB-type of your preferred DBMS. Below are the BLOB
the length of the `id` column. For example, if `session.hash_function=sha256`, you should use a
length 64 instead of 40.
Alternatively, this can be accomplished with the following migration:
```php
<?php
use yii\db\Migration;
class m170529_050554_create_table_session extends Migration
{
public function up()
{
$this->createTable('{{%session}}', [
'id' => $this->char(64)->notNull(),
'expire' => $this->integer(),
'data' => $this->binary()
]);
$this->addPrimaryKey('pk-id', '{{%session}}', 'id');
}
public function down()
{
$this->dropTable('{{%session}}');
}
}
```
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