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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db;
/**
* SchemaBuilderTrait contains shortcut methods to create instances of [[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:
*
* ```php
* $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(),
* ]);
* ```
*
* @author Vasenin Matvey <vaseninm@gmail.com>
* @since 2.0.6
*/
trait SchemaBuilderTrait
{
/**
* @return Connection the database connection to be used for schema building.
*/
abstract protected function getDb();
/**
* Creates a primary key column.
* @param int $length column size or precision definition.
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function primaryKey($length = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_PK, $length);
}
/**
* Creates a big primary key column.
* @param int $length column size or precision definition.
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function bigPrimaryKey($length = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_BIGPK, $length);
}
/**
* Creates a char column.
* @param int $length column size definition i.e. the maximum string length.
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.8
*/
public function char($length = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_CHAR, $length);
}
/**
* Creates a string column.
* @param int $length column size definition i.e. the maximum string length.
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function string($length = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_STRING, $length);
}
/**
* Creates a text column.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function text()
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_TEXT);
}
/**
* Creates a tinyint column. If tinyint is not supported by the DBMS, smallint will be used.
* @param int $length column size or precision definition.
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.14
*/
public function tinyInteger($length = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_TINYINT, $length);
}
/**
* Creates a smallint column.
* @param int $length column size or precision definition.
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function smallInteger($length = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_SMALLINT, $length);
}
/**
* Creates an integer column.
* @param int $length column size or precision definition.
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function integer($length = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_INTEGER, $length);
}
/**
* Creates a bigint column.
* @param int $length column size or precision definition.
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function bigInteger($length = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_BIGINT, $length);
}
/**
* Creates a float column.
* @param int $precision column value precision. First parameter passed to the column type, e.g. FLOAT(precision).
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function float($precision = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_FLOAT, $precision);
}
/**
* Creates a double column.
* @param int $precision column value precision. First parameter passed to the column type, e.g. DOUBLE(precision).
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function double($precision = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_DOUBLE, $precision);
}
/**
* Creates a decimal column.
* @param int $precision 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.
* @param int $scale column value scale, which is usually the number of digits after the decimal point.
* Second parameter passed to the column type, e.g. DECIMAL(precision, scale).
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function decimal($precision = null, $scale = null)
{
$length = [];
if ($precision !== null) {
$length[] = $precision;
}
if ($scale !== null) {
$length[] = $scale;
}
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_DECIMAL, $length);
}
/**
* Creates a datetime column.
* @param int $precision column value precision. First parameter passed to the column type, e.g. DATETIME(precision).
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function dateTime($precision = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_DATETIME, $precision);
}
/**
* Creates a timestamp column.
* @param int $precision column value precision. First parameter passed to the column type, e.g. TIMESTAMP(precision).
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function timestamp($precision = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_TIMESTAMP, $precision);
}
/**
* Creates a time column.
* @param int $precision column value precision. First parameter passed to the column type, e.g. TIME(precision).
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function time($precision = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_TIME, $precision);
}
/**
* Creates a date column.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function date()
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_DATE);
}
/**
* Creates a binary column.
* @param int $length column size or precision definition.
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function binary($length = null)
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_BINARY, $length);
}
/**
* Creates a boolean column.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function boolean()
{
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_BOOLEAN);
}
/**
* Creates a money column.
* @param int $precision 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.
* @param int $scale column value scale, which is usually the number of digits after the decimal point.
* Second parameter passed to the column type, e.g. DECIMAL(precision, scale).
* This parameter will be ignored if not supported by the DBMS.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.6
*/
public function money($precision = null, $scale = null)
{
$length = [];
if ($precision !== null) {
$length[] = $precision;
}
if ($scale !== null) {
$length[] = $scale;
}
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_MONEY, $length);
}
/**
* Creates a JSON column.
* @return ColumnSchemaBuilder the column instance which can be further customized.
* @since 2.0.14
* @throws \yii\base\Exception
*/
public function json()
{
/*
* TODO Remove in Yii 2.1
*
* Disabled due to bug in MySQL extension
* @link https://bugs.php.net/bug.php?id=70384
*/
if (version_compare(PHP_VERSION, '5.6', '<') && $this->getDb()->getDriverName() === 'mysql') {
throw new \yii\base\Exception('JSON column type is not supported in PHP < 5.6');
}
return $this->getDb()->getSchema()->createColumnSchemaBuilder(Schema::TYPE_JSON);
}
}