W3cubDocs

/CakePHP 4.1

Interface TableSchemaInterface

An interface used by database TableSchema objects.

Namespace: Cake\Database\Schema

Constants summary

  • string
    TYPE_BIGINTEGER
    'biginteger'
  • string
    TYPE_BINARY
    'binary'
  • string
    TYPE_BINARY_UUID
    'binaryuuid'
  • string
    TYPE_BOOLEAN
    'boolean'
  • string
    TYPE_CHAR
    'char'
  • string
    TYPE_DATE
    'date'
  • string
    TYPE_DATETIME
    'datetime'
  • string
    TYPE_DATETIME_FRACTIONAL
    'datetimefractional'
  • string
    TYPE_DECIMAL
    'decimal'
  • string
    TYPE_FLOAT
    'float'
  • string
    TYPE_INTEGER
    'integer'
  • string
    TYPE_JSON
    'json'
  • string
    TYPE_SMALLINTEGER
    'smallinteger'
  • string
    TYPE_STRING
    'string'
  • string
    TYPE_TEXT
    'text'
  • string
    TYPE_TIME
    'time'
  • string
    TYPE_TIMESTAMP
    'timestamp'
  • string
    TYPE_TIMESTAMP_FRACTIONAL
    'timestampfractional'
  • string
    TYPE_TIMESTAMP_TIMEZONE
    'timestamptimezone'
  • string
    TYPE_TINYINTEGER
    'tinyinteger'
  • string
    TYPE_UUID
    'uuid'

Method Summary

  • addColumn() public

    Add a column to the table.

  • addConstraint() public

    Add a constraint.

  • addIndex() public

    Add an index.

  • baseColumnType() public

    Returns the base type name for the provided column.

  • columns() public

    Get the column names in the table.

  • constraints() public

    Get the names of all the constraints in the table.

  • defaultValues() public

    Get a hash of columns and their default values.

  • dropConstraint() public

    Remove a constraint.

  • getColumn() public

    Get column data in the table.

  • getColumnType() public

    Returns column type or null if a column does not exist.

  • getConstraint() public

    Read information about a constraint based on name.

  • getIndex() public

    Read information about an index based on name.

  • getOptions() public

    Gets the options for a table.

  • getPrimaryKey() public

    Get the column(s) used for the primary key.

  • hasAutoincrement() public

    Check whether or not a table has an autoIncrement column defined.

  • hasColumn() public

    Returns true if a column exists in the schema.

  • indexes() public

    Get the names of all the indexes in the table.

  • isNullable() public

    Check whether or not a field is nullable

  • isTemporary() public

    Gets whether the table is temporary in the database.

  • name() public

    Get the name of the table.

  • removeColumn() public

    Remove a column from the table schema.

  • setColumnType() public

    Sets the type of a column.

  • setOptions() public

    Sets the options for a table.

  • setTemporary() public

    Sets whether the table is temporary in the database.

  • typeMap() public

    Returns an array where the keys are the column names in the schema and the values the database type they have.

Method Detail

addColumn() public 

addColumn(string $name, mixed $attrs)

Add a column to the table.

Attributes

Columns can have several attributes:

  • type The type of the column. This should be one of CakePHP's abstract types.
  • length The length of the column.
  • precision The number of decimal places to store for float and decimal types.
  • default The default value of the column.
  • null Whether or not the column can hold nulls.
  • fixed Whether or not the column is a fixed length column. This is only present/valid with string columns.
  • unsigned Whether or not the column is an unsigned column. This is only present/valid for integer, decimal, float columns.

In addition to the above keys, the following keys are implemented in some database dialects, but not all:

  • comment The comment for the column.

Parameters

string $name

The name of the column

string|array $attrs

The attributes for the column or the type name.

Returns

$this

addConstraint() public 

addConstraint(string $name, mixed $attrs)

Add a constraint.

Used to add constraints to a table. For example primary keys, unique keys and foreign keys.

Attributes

  • type The type of constraint being added.
  • columns The columns in the index.
  • references The table, column a foreign key references.
  • update The behavior on update. Options are 'restrict', 'setNull', 'cascade', 'noAction'.
  • delete The behavior on delete. Options are 'restrict', 'setNull', 'cascade', 'noAction'.

The default for 'update' & 'delete' is 'cascade'.

Parameters

string $name

The name of the constraint.

array|string $attrs

The attributes for the constraint. If string it will be used as type.

Returns

$this

Throws

Cake\Database\Exception

addIndex() public 

addIndex(string $name, mixed $attrs)

Add an index.

Used to add indexes, and full text indexes in platforms that support them.

Attributes

  • type The type of index being added.
  • columns The columns in the index.

Parameters

string $name

The name of the index.

array|string $attrs

The attributes for the index. If string it will be used as type.

Returns

$this

Throws

Cake\Database\Exception

baseColumnType() public 

baseColumnType(string $column)

Returns the base type name for the provided column.

This represent the database type a more complex class is based upon.

Parameters

string $column

The column name to get the base type from

Returns

string|null

The base type name

columns() public 

columns()

Get the column names in the table.

Returns

string[]

constraints() public 

constraints()

Get the names of all the constraints in the table.

Returns

string[]

defaultValues() public 

defaultValues()

Get a hash of columns and their default values.

Returns

array

dropConstraint() public 

dropConstraint(string $name)

Remove a constraint.

Parameters

string $name

Name of the constraint to remove

Returns

$this

getColumn() public 

getColumn(string $name)

Get column data in the table.

Parameters

string $name

The column name.

Returns

array|null

Column data or null.

getColumnType() public 

getColumnType(string $name)

Returns column type or null if a column does not exist.

Parameters

string $name

The column to get the type of.

Returns

string|null

getConstraint() public 

getConstraint(string $name)

Read information about a constraint based on name.

Parameters

string $name

The name of the constraint.

Returns

array|null

Array of constraint data, or null

getIndex() public 

getIndex(string $name)

Read information about an index based on name.

Parameters

string $name

The name of the index.

Returns

array|null

Array of index data, or null

getOptions() public 

getOptions()

Gets the options for a table.

Table options allow you to set platform specific table level options. For example the engine type in MySQL.

Returns

array

An array of options.

getPrimaryKey() public 

getPrimaryKey()

Get the column(s) used for the primary key.

Returns

array

Column name(s) for the primary key. An empty list will be returned when the table has no primary key.

hasAutoincrement() public 

hasAutoincrement()

Check whether or not a table has an autoIncrement column defined.

Returns

bool

hasColumn() public 

hasColumn(string $name)

Returns true if a column exists in the schema.

Parameters

string $name

Column name.

Returns

bool

indexes() public 

indexes()

Get the names of all the indexes in the table.

Returns

string[]

isNullable() public 

isNullable(string $name)

Check whether or not a field is nullable

Missing columns are nullable.

Parameters

string $name

The column to get the type of.

Returns

bool

Whether or not the field is nullable.

isTemporary() public 

isTemporary()

Gets whether the table is temporary in the database.

Returns

bool

The current temporary setting.

name() public 

name()

Get the name of the table.

Returns

string

removeColumn() public 

removeColumn(string $name)

Remove a column from the table schema.

If the column is not defined in the table, no error will be raised.

Parameters

string $name

The name of the column

Returns

$this

setColumnType() public 

setColumnType(string $name, string $type)

Sets the type of a column.

Parameters

string $name

The column to set the type of.

string $type

The type to set the column to.

Returns

$this

setOptions() public 

setOptions(array $options)

Sets the options for a table.

Table options allow you to set platform specific table level options. For example the engine type in MySQL.

Parameters

array $options

The options to set, or null to read options.

Returns

$this

setTemporary() public 

setTemporary(bool $temporary)

Sets whether the table is temporary in the database.

Parameters

bool $temporary

Whether or not the table is to be temporary.

Returns

$this

typeMap() public 

typeMap()

Returns an array where the keys are the column names in the schema and the values the database type they have.

Returns

array

© 2005–present The Cake Software Foundation, Inc.
Licensed under the MIT License.
CakePHP is a registered trademark of Cake Software Foundation, Inc.
We are not endorsed by or affiliated with CakePHP.
https://api.cakephp.org/4.1/interface-Cake.Database.Schema.TableSchemaInterface.html