BoolMust class

A Validator that validates a bool field. It provides numerous constraints that can be imposed on the bool field.

Constraints can be chained together via the cascade operator ... Constraints that come first take precedence.

Example:

Former(
  form: ...
  schema: MySchema(
    someBoolField: BoolMust()..exist()..beTrue(),
  )
)

In the above snippet, the BoolMust validator ensures that someBoolField must exist and must be true.

Implemented types

• Validator<bool>

Constructors

BoolMust()

Properties

error → String

The error message as a result of a failed validation. This is empty if the previous validation is passed.

no setter, override

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

beFalse([String? errorMessage]) → void

Instructs BoolMust to make sure the given value is false.

beTrue([String? errorMessage]) → void

Instructs BoolMust to make sure the given value is true.

exist([String? errorMessage]) → void

Instructs BoolMust to make sure the given value is not null.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

validate(bool? value) → bool

Validates value. Returns whether the value is valid.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited