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adjusted guide docs for SchemaBuilder

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Carsten Brandt
2015-08-04 00:03:11 +02:00
parent 681db52ba6
commit dd1471f6b3
1 changed files with 10 additions and 6 deletions
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16
docs/guide/db-migrations.md
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@@ -94,11 +94,12 @@ when you upgrade the database with this migration, while the `down()` method is
The following code shows how you may implement the migration class to create a `news` table: The following code shows how you may implement the migration class to create a `news` table:
```php ```php
<?php
use yii\db\Schema; use yii\db\Schema;
use yii\db\Migration; use yii\db\Migration;
class m150101_185401_create_news_table extends \yii\db\Migration class m150101_185401_create_news_table extends Migration
{ {
public function up() public function up()
{ {
@@ -140,22 +141,23 @@ to `Schema::TYPE_STRING` to specify that the column cannot be null.
> Info: The mapping between abstract types and physical types is specified by > Info: The mapping between abstract types and physical types is specified by
the [[yii\db\QueryBuilder::$typeMap|$typeMap]] property in each concrete `QueryBuilder` class. the [[yii\db\QueryBuilder::$typeMap|$typeMap]] property in each concrete `QueryBuilder` class.
Since 2.0.5 schema builder which provides more convenient way defining column schema was introduced so migration above Since version 2.0.5 schema builder which provides more convenient way defining column schema was introduced so migration above
could be written like the following: could be written like the following:
```php ```php
<?php
use yii\db\Schema; use yii\db\Schema;
use yii\db\Migration; use yii\db\Migration;
class m150101_185401_create_news_table extends \yii\db\Migration class m150101_185401_create_news_table extends Migration
{ {
public function up() public function up()
{ {
$this->createTable('news', [ $this->createTable('news', [
'id' => Schema::primaryKey(), 'id' => $this->primaryKey(),
'title' => Schema::string()->notNull(), 'title' => $this->string()->notNull(),
'content' => Schema::text(), 'content' => $this->text(),
]); ]);
} }
@@ -167,6 +169,8 @@ class m150101_185401_create_news_table extends \yii\db\Migration
} }
``` ```
A list of all available methods for defining the column types is available in the API documentation of [[yii\db\SchemaBuilderTrait]].
### Transactional Migrations <span id="transactional-migrations"></span> ### Transactional Migrations <span id="transactional-migrations"></span>