FieldArrayStore

Field array store interface that provides reactive access to the state of an array field created with injectFieldArray or the *formischFieldArray directive.

Generics

• TSchema extends FormSchema
• TFieldArrayPath extends RequiredPath

Definition

• FieldArrayStore
  • path ValidArrayPath<v.InferInput<TSchema>, TFieldArrayPath>
  • items Signal<string[]>
  • errors Signal<[string, ...string[]] | null>
  • isTouched Signal<boolean>
  • isEdited Signal<boolean>
  • isDirty Signal<boolean>
  • isValid Signal<boolean>

Explanation

The items signal contains a unique identifier for every item of the array. Use it as the track expression of your @for block: the identifiers are stable across reorders, so Angular moves the existing DOM instead of recreating it, and the state of each field stays attached to the right item.

The errors signal contains the validation errors of the array itself, for example from v.nonEmpty() or v.maxLength(), not the errors of the fields inside the array.