Validate<T>.absent constructor

const Validate<T>.absent({bool onUpdate: true, bool onInsert: true })

A validator for ensuring a property does not have a value when being inserted or updated.

This metadata requires that a property must NOT be set in Query.values before an update or insert.

This validation is used to restrict input during either an insert or update query. For example, a 'dateCreated' property would use this validator to ensure that property isn't set during an update.

  @Validate.absent(onUpdate: true, onInsert: false)
  DateTime dateCreated;

If onUpdate is true (the default), this validation requires a property to be absent for update queries. If onInsert is true (the default), this validation requires a property to be absent for insert queries.

Implementation

const Validate.absent({bool onUpdate: true, bool onInsert: true})
    : this._(
          onUpdate: onUpdate,
          onInsert: onInsert,
          validator: _BuiltinValidate.absent);