CollectionRules class abstract final

Factory class for creating collection validation rules.

Works with List, Set, Iterable, and other collection types.

Example

final tagsValidator = Validate.all<List<String>, String>([
  CollectionRules.minLength(1, error: 'At least one tag required'),
  CollectionRules.maxLength(5, error: 'Maximum 5 tags'),
  CollectionRules.unique(error: 'Duplicate tags not allowed'),
]);

Properties

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

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

all<T, E>(bool predicate(T), {required E error}) → Rule<Iterable<T>, E>

Validates that all items match the predicate.

any<T, E>(bool predicate(T), {required E error}) → Rule<Iterable<T>, E>

Validates that at least one item matches the predicate.

contains<T, E>(T item, {required E error}) → Rule<Iterable<T>, E>

Validates that the collection contains item.

lengthRange<T, E>(int min, int max, {required E error}) → Rule<Iterable<T>, E>

Validates that the collection length is within min and max (inclusive).

maxLength<T, E>(int max, {required E error}) → Rule<Iterable<T>, E>

Validates that the collection has at most max items.

minLength<T, E>(int min, {required E error}) → Rule<Iterable<T>, E>

Validates that the collection has at least min items.

none<T, E>(bool predicate(T), {required E error}) → Rule<Iterable<T>, E>

Validates that no items match the predicate.

notContains<T, E>(T item, {required E error}) → Rule<Iterable<T>, E>

Validates that the collection does not contain item.

notEmpty<T, E>({required E error}) → Rule<Iterable<T>, E>

Validates that the collection is not empty.

unique<T, E>({required E error}) → Rule<Iterable<T>, E>

Validates that the collection has no duplicate items.

uniqueBy<T, K, E>(K selector(T), {required E error}) → Rule<Iterable<T>, E>

Validates that the collection has no duplicate items based on selector.