Class RelationField

RelationField defines "relation" type field for storing single or multiple collection record references.

Requires the CollectionId option to be set.

If MaxSelect is not set or <= 1, then the field value is expected to be a single record id.

If MaxSelect is > 1, then the field value is expected to be a slice of record ids.

The respective zero record field value is either empty string (single) or empty string slice (multiple).

The following additional setter keys are available:

  - "fieldName+" - append one or more values to the existing record one. For example:

    record.Set("categories+", []string{"new1", "new2"}) // []string{"old1", "old2", "new1", "new2"}

  - "+fieldName" - prepend one or more values to the existing record one. For example:

    record.Set("+categories", []string{"new1", "new2"}) // []string{"new1", "new2", "old1", "old2"}

  - "fieldName-" - subtract one or more values from the existing record one. For example:

    record.Set("categories-", "old1") // []string{"old2"}

Hierarchy

Implements

Constructors

constructor

Methods

columnType driverValue findSetter getHidden getId getName getSystem isMultiple prepareValue setHidden setId setName setSystem type validateSettings validateValue

Properties

cascadeDelete collectionId hidden id maxSelect minSelect name presentable required system

Constructors

constructor

Methods

columnType

driverValue

findSetter

getHidden

getId

getName

getSystem

isMultiple

  • IsMultiple implements [MultiValuer] interface and checks whether the current field options support multiple values.

    Returns boolean

prepareValue

setHidden

setId

setName

setSystem

type

validateSettings

validateValue

Properties

cascadeDelete

cascadeDelete: boolean

CascadeDelete indicates whether the root model should be deleted in case of delete of all linked relations.

collectionId

collectionId: string

CollectionId is the id of the related collection.

hidden

hidden: boolean

Hidden hides the field from the API response.

id

id: string

Id is the unique stable field identifier.

It is automatically generated from the name when adding to a collection FieldsList.

maxSelect

maxSelect: number

MaxSelect indicates the max number of allowed relation records that could be linked to the main model.

For multiple select the value must be > 1, otherwise fallbacks to single (default).

If MinSelect is set, MaxSelect must be at least >= MinSelect.

minSelect

minSelect: number

MinSelect indicates the min number of allowed relation records that could be linked to the main model.

No min limit is applied if it is zero or negative value.

name

name: string

Name (required) is the unique name of the field.

presentable

presentable: boolean

Presentable hints the Dashboard UI to use the underlying field record value in the relation preview label.

required

required: boolean

Required will require the field value to be non-empty.

system

system: boolean

System prevents the renaming and removal of the field.

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