ColumnSchemaBuilder

Type: Class
Namespace: craft\db\mysql
Inherits: craft\db\mysql\ColumnSchemaBuilder » yii\db\mysql\ColumnSchemaBuilder » yii\db\ColumnSchemaBuilder » yii\base\BaseObject
Implements: yii\base\Configurable
Since: 3.0.0

# Public Properties

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

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

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

Initializes the object.

This method is invoked at the end of the constructor after the object is initialized with the given configuration.

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

Builds the length/precision part of the column.