Containers topic

The schemas that hold other schemas.

VMap validates a Map<String, dynamic> — JSON straight off the wire, a Firestore document, a form's raw values. VObject<T> validates an instance of your own class through field extractor callbacks the compiler checks, with no code generation. The two accept the same rules, so one schema can serve both paths: safeParse for the typed instance, safeParseRaw for the map it was built from.

VArray validates a list, applying its element schema to every entry and carrying the index in each error's path.

Cross-field rules live here too — refineField, refineFieldRaw, equalFields and when see the whole container, which is why a "password matches confirmation" rule belongs on the container and never on the field.

Classes

VArray<T>

Validates List<T> values, applying the element schema to each item.

VMap

Validates Map<String, dynamic> values against a field schema.

VObject<T>

Validates class/entity instances of type T via type-safe field extraction callbacks.