The RelationList Field Type

This Field Type represents one or multiple relations to content.=

Name	Internal name	Expected input
`RelationList`	`ezobjectrelationlist`	`mixed`

Table of contents:

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Description
Input expectati= ons
Value Object API=20
- Properties
- Constructor
Validation
Settings

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Description

This Field Type makes possible to store and retrieve values of relation = to content.

Input expectations

Type	Description	Example
`int\|string`	Id of the related Content item	`42`
`array`	An array of related Content IDs	`array( 24, 42 )`
eZ\Publish\API\Repository\Val= ues\Content\ContentInfo	ContentInfo instance of the rel= ated Content
`eZ\Publish\Core\FieldType\Re= lationList\Value`	RelationList Field Type Value Obje= ct	See Value Object documentation sec= tion below.

Value Object API

Properties

eZ\Publish\Core\FieldType\RelationList\Value contains = following properties.

Property	Type	Description	Example
`destinationContentIds`	`array`	An array of related Content ids	`array( 24, 42 )`

Value object content example

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$relationList->destinationContentId =3D array(=20
=09$contentInfo1->id,
=09$contentInfo2->id,
=09170
);

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Constructor

The RelationList\Value constructor w= ill initialize a new Value object with the value provided. It exp= ects a mixed array as value.

Constructor example

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// Instantiates a RelationList Value object
$relationListValue =3D new RelationList\Value(
=09array(
=09=09$contentInfo1->id,
=09=09$contentInfo2->id,
=09=09170=09=09
=09)
);

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Validation

This Field Type validates if the selectionMetho= d specified is 0 (self::SELECTION_BROWSE) or 1 (= self::SELECTION_DROPDOWN). A validation error is thrown if the= value does not match.

Also validates if the select= ionDefaultLocation specified is null, string or integer. If the = type validation fails a validation error is thrown.

And validates if the value specified in selecti= onContentTypes is an array. If not, a validation error in giv= en.

Settings

The field definition of this Field Type can be configured with following= options:

Name	Type	Default value	Description
`s= electionMethod`	`mixed`	SELECTION_BROWSE	Method of selection in the administration interf= ace
`s= electionDefaultLocation`	`string\|integer`	`null`	Id of the default Location for the selection whe= n using administration interface
`s= electionContentTypes`	`array`	`array()`	An array of ContentType ids that are allowed for= related Content

Following selection methods are available:

Name	Description
SELECTION_BROWSE	Selection will use browse mode
SELECTION_DROPDOWN	Selection control will use dropdown control cont= aining the Content list in the default Location for selection

Example of using settings in PHP

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use eZ\Publish\Core\FieldType\RelationList\Type;

$settings =3D array(
=09"selectionMethod" =3D> Type::SELECTION_BROWSE,
=09"selectionDefaultLocation" =3D> null,
    "selectionContentTypes" =3D> array()
 );

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