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Class yii\db\mysql\ColumnSchemaBuilder

Inheritanceyii\db\mysql\ColumnSchemaBuilder » yii\db\ColumnSchemaBuilder » yii\base\BaseObject
Implementsyii\base\Configurable
Available since version2.0.8
Source Code https://github.com/yiisoft/yii2/blob/master/framework/db/mysql/ColumnSchemaBuilder.php

ColumnSchemaBuilder is the schema builder for MySQL databases.

Public Properties

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PropertyTypeDescriptionDefined By
$categoryMap array Mapping of abstract column types (keys) to type categories (values). yii\db\ColumnSchemaBuilder
$comment string Comment value of the column. yii\db\ColumnSchemaBuilder
$db yii\db\Connection The current database connection. yii\db\ColumnSchemaBuilder

Protected Properties

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PropertyTypeDescriptionDefined By
$after string The column after which this column will be added. yii\db\ColumnSchemaBuilder
$append mixed SQL string to be appended to column schema definition. yii\db\ColumnSchemaBuilder
$check string The CHECK constraint for the column. yii\db\ColumnSchemaBuilder
$default mixed Default value of the column. yii\db\ColumnSchemaBuilder
$isFirst boolean Whether this column is to be inserted at the beginning of the table. yii\db\ColumnSchemaBuilder
$isNotNull boolean|null Whether the column is or not nullable. yii\db\ColumnSchemaBuilder
$isUnique boolean Whether the column values should be unique. yii\db\ColumnSchemaBuilder
$isUnsigned boolean Whether the column values should be unsigned. yii\db\ColumnSchemaBuilder
$length integer|string|array Column size or precision definition. yii\db\ColumnSchemaBuilder
$type string The column type definition such as INTEGER, VARCHAR, DATETIME, etc. yii\db\ColumnSchemaBuilder

Public Methods

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MethodDescriptionDefined By
__call() Calls the named method which is not a class method. yii\base\BaseObject
__construct() Constructor. yii\base\BaseObject
__get() Returns the value of an object property. yii\base\BaseObject
__isset() Checks if a property is set, i.e. defined and not null. yii\base\BaseObject
__set() Sets value of an object property. yii\base\BaseObject
__toString() Builds the full string for the column's schema. yii\db\mysql\ColumnSchemaBuilder
__unset() Sets an object property to null. yii\base\BaseObject
after() Adds an AFTER constraint to the column. yii\db\ColumnSchemaBuilder
append() Specify additional SQL to be appended to column definition. yii\db\ColumnSchemaBuilder
canGetProperty() Returns a value indicating whether a property can be read. yii\base\BaseObject
canSetProperty() Returns a value indicating whether a property can be set. yii\base\BaseObject
check() Sets a CHECK constraint for the column. yii\db\ColumnSchemaBuilder
className() Returns the fully qualified name of this class. yii\base\BaseObject
comment() Specifies the comment for column. yii\db\ColumnSchemaBuilder
defaultExpression() Specify the default SQL expression for the column. yii\db\ColumnSchemaBuilder
defaultValue() Specify the default value for the column. yii\db\ColumnSchemaBuilder
first() Adds an FIRST constraint to the column. yii\db\ColumnSchemaBuilder
hasMethod() Returns a value indicating whether a method is defined. yii\base\BaseObject
hasProperty() Returns a value indicating whether a property is defined. yii\base\BaseObject
init() Initializes the object. yii\base\BaseObject
notNull() Adds a NOT NULL constraint to the column. yii\db\ColumnSchemaBuilder
null() Adds a NULL constraint to the column. yii\db\ColumnSchemaBuilder
unique() Adds a UNIQUE constraint to the column. yii\db\ColumnSchemaBuilder
unsigned() Marks column as unsigned. yii\db\ColumnSchemaBuilder

Protected Methods

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MethodDescriptionDefined By
buildAfterString() Builds the after constraint for the column. Defaults to unsupported. yii\db\mysql\ColumnSchemaBuilder
buildAppendString() Builds the custom string that's appended to column definition. yii\db\ColumnSchemaBuilder
buildCheckString() Builds the check constraint for the column. yii\db\ColumnSchemaBuilder
buildCommentString() Builds the comment specification for the column. yii\db\mysql\ColumnSchemaBuilder
buildCompleteString() Returns the complete column definition from input format. yii\db\ColumnSchemaBuilder
buildDefaultString() Builds the default value specification for the column. yii\db\ColumnSchemaBuilder
buildFirstString() Builds the first constraint for the column. Defaults to unsupported. yii\db\mysql\ColumnSchemaBuilder
buildLengthString() Builds the length/precision part of the column. yii\db\ColumnSchemaBuilder
buildNotNullString() Builds the not null constraint for the column. yii\db\ColumnSchemaBuilder
buildUniqueString() Builds the unique constraint for the column. yii\db\ColumnSchemaBuilder
buildUnsignedString() Builds the unsigned string for column. Defaults to unsupported. yii\db\mysql\ColumnSchemaBuilder
getTypeCategory() Returns the category of the column type. yii\db\ColumnSchemaBuilder

Constants

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ConstantValueDescriptionDefined By
CATEGORY_NUMERIC 'numeric' yii\db\ColumnSchemaBuilder
CATEGORY_OTHER 'other' yii\db\ColumnSchemaBuilder
CATEGORY_PK 'pk' yii\db\ColumnSchemaBuilder
CATEGORY_STRING 'string' yii\db\ColumnSchemaBuilder
CATEGORY_TIME 'time' yii\db\ColumnSchemaBuilder

Method Details

__toString() public method

Builds the full string for the column's schema.

public string __toString ( )
buildAfterString() protected method

Builds the after constraint for the column. Defaults to unsupported.

protected string buildAfterString ( )
return string

A string containing the AFTER constraint.

buildCommentString() protected method

Builds the comment specification for the column.

protected string buildCommentString ( )
return string

A string containing the COMMENT keyword and the comment itself

buildFirstString() protected method

Builds the first constraint for the column. Defaults to unsupported.

protected string buildFirstString ( )
return string

A string containing the FIRST constraint.

buildUnsignedString() protected method

Builds the unsigned string for column. Defaults to unsupported.

protected string buildUnsignedString ( )
return string

A string containing UNSIGNED keyword.