API Documentation for Yii 2.0

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Trait yii\db\SchemaBuilderTrait

All Classes | Methods

Implemented by	yii\db\Migration
Available since version	2.0.6
Source Code	https://github.com/yiisoft/yii2/blob/master/framework/db/SchemaBuilderTrait.php

SchemaBuilderTrait contains shortcut methods to create instances of yii\db\ColumnSchemaBuilder.

These can be used in database migrations to define database schema types using a PHP interface. This is useful to define a schema in a DBMS independent way so that the application may run on different DBMS the same way.

For example you may use the following code inside your migration files:

$this->createTable('example_table', [
  'id' => $this->primaryKey(),
  'name' => $this->string(64)->notNull(),
  'type' => $this->integer()->notNull()->defaultValue(10),
  'description' => $this->text(),
  'rule_name' => $this->string(64),
  'data' => $this->text(),
  'created_at' => $this->datetime()->notNull(),
  'updated_at' => $this->datetime(),
]);

Public Methods

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Method	Description	Defined By
bigInteger()	Creates a bigint column.	yii\db\SchemaBuilderTrait
bigPrimaryKey()	Creates a big primary key column.	yii\db\SchemaBuilderTrait
binary()	Creates a binary column.	yii\db\SchemaBuilderTrait
boolean()	Creates a boolean column.	yii\db\SchemaBuilderTrait
char()	Creates a char column.	yii\db\SchemaBuilderTrait
date()	Creates a date column.	yii\db\SchemaBuilderTrait
dateTime()	Creates a datetime column.	yii\db\SchemaBuilderTrait
decimal()	Creates a decimal column.	yii\db\SchemaBuilderTrait
double()	Creates a double column.	yii\db\SchemaBuilderTrait
float()	Creates a float column.	yii\db\SchemaBuilderTrait
integer()	Creates an integer column.	yii\db\SchemaBuilderTrait
json()	Creates a JSON column.	yii\db\SchemaBuilderTrait
money()	Creates a money column.	yii\db\SchemaBuilderTrait
primaryKey()	Creates a primary key column.	yii\db\SchemaBuilderTrait
smallInteger()	Creates a smallint column.	yii\db\SchemaBuilderTrait
string()	Creates a string column.	yii\db\SchemaBuilderTrait
text()	Creates a text column.	yii\db\SchemaBuilderTrait
time()	Creates a time column.	yii\db\SchemaBuilderTrait
timestamp()	Creates a timestamp column.	yii\db\SchemaBuilderTrait
tinyInteger()	Creates a tinyint column. If tinyint is not supported by the DBMS, smallint will be used.	yii\db\SchemaBuilderTrait

Protected Methods

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Method	Description	Defined By
getDb()		yii\db\SchemaBuilderTrait

Method Details

bigInteger() public method (available since version 2.0.6)

Creates a bigint column.

public yii\db\ColumnSchemaBuilder bigInteger ( $length = null )
$length	integer	Column size or precision definition. This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

bigPrimaryKey() public method (available since version 2.0.6)

Creates a big primary key column.

public yii\db\ColumnSchemaBuilder bigPrimaryKey ( $length = null )
$length	integer	Column size or precision definition. This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

binary() public method (available since version 2.0.6)

Creates a binary column.

public yii\db\ColumnSchemaBuilder binary ( $length = null )
$length	integer	Column size or precision definition. This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

boolean() public method (available since version 2.0.6)

Creates a boolean column.

public yii\db\ColumnSchemaBuilder boolean ( )
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

char() public method (available since version 2.0.8)

Creates a char column.

public yii\db\ColumnSchemaBuilder char ( $length = null )
$length	integer	Column size definition i.e. the maximum string length. This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

date() public method (available since version 2.0.6)

Creates a date column.

public yii\db\ColumnSchemaBuilder date ( )
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

dateTime() public method (available since version 2.0.6)

Creates a datetime column.

public yii\db\ColumnSchemaBuilder dateTime ( $precision = null )
$precision	integer	Column value precision. First parameter passed to the column type, e.g. DATETIME(precision). This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

decimal() public method (available since version 2.0.6)

Creates a decimal column.

public yii\db\ColumnSchemaBuilder decimal ( $precision = null, $scale = null )
$precision	integer	Column value precision, which is usually the total number of digits. First parameter passed to the column type, e.g. DECIMAL(precision, scale). This parameter will be ignored if not supported by the DBMS.
$scale	integer	Column value scale, which is usually the number of digits after the decimal point. Second parameter passed to the column type, e.g. DECIMAL(precision, scale). This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

double() public method (available since version 2.0.6)

Creates a double column.

public yii\db\ColumnSchemaBuilder double ( $precision = null )
$precision	integer	Column value precision. First parameter passed to the column type, e.g. DOUBLE(precision). This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

float() public method (available since version 2.0.6)

Creates a float column.

public yii\db\ColumnSchemaBuilder float ( $precision = null )
$precision	integer	Column value precision. First parameter passed to the column type, e.g. FLOAT(precision). This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

getDb() protected abstract method

protected abstract yii\db\Connection getDb ( )
return	yii\db\Connection	The database connection to be used for schema building.

integer() public method (available since version 2.0.6)

Creates an integer column.

public yii\db\ColumnSchemaBuilder integer ( $length = null )
$length	integer	Column size or precision definition. This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

json() public method (available since version 2.0.14)

Creates a JSON column.

public yii\db\ColumnSchemaBuilder json ( )
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.
throws	yii\base\Exception

money() public method (available since version 2.0.6)

Creates a money column.

public yii\db\ColumnSchemaBuilder money ( $precision = null, $scale = null )
$precision	integer	Column value precision, which is usually the total number of digits. First parameter passed to the column type, e.g. DECIMAL(precision, scale). This parameter will be ignored if not supported by the DBMS.
$scale	integer	Column value scale, which is usually the number of digits after the decimal point. Second parameter passed to the column type, e.g. DECIMAL(precision, scale). This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

primaryKey() public method (available since version 2.0.6)

Creates a primary key column.

public yii\db\ColumnSchemaBuilder primaryKey ( $length = null )
$length	integer	Column size or precision definition. This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

smallInteger() public method (available since version 2.0.6)

Creates a smallint column.

public yii\db\ColumnSchemaBuilder smallInteger ( $length = null )
$length	integer	Column size or precision definition. This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

string() public method (available since version 2.0.6)

Creates a string column.

public yii\db\ColumnSchemaBuilder string ( $length = null )
$length	integer	Column size definition i.e. the maximum string length. This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

text() public method (available since version 2.0.6)

Creates a text column.

public yii\db\ColumnSchemaBuilder text ( )
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

time() public method (available since version 2.0.6)

Creates a time column.

public yii\db\ColumnSchemaBuilder time ( $precision = null )
$precision	integer	Column value precision. First parameter passed to the column type, e.g. TIME(precision). This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

timestamp() public method (available since version 2.0.6)

Creates a timestamp column.

public yii\db\ColumnSchemaBuilder timestamp ( $precision = null )
$precision	integer	Column value precision. First parameter passed to the column type, e.g. TIMESTAMP(precision). This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

tinyInteger() public method (available since version 2.0.14)

Creates a tinyint column. If tinyint is not supported by the DBMS, smallint will be used.

public yii\db\ColumnSchemaBuilder tinyInteger ( $length = null )
$length	integer	Column size or precision definition. This parameter will be ignored if not supported by the DBMS.
return	yii\db\ColumnSchemaBuilder	The column instance which can be further customized.

User Contributed Notes