HasMany<E extends DataModelMixin<E>> class

A Relationship that models a to-many ownership.

Example: An author who has many books

class Author with DataModel<Author> {
 @override
 final int id;
 final String name;
 final HasMany<Book> books;

 Todo({this.id, this.name, this.books});
}
Inheritance

Constructors

HasMany([Set<E>? models])
Creates a HasMany relationship, with an optional initial Set<E>.
HasMany.fromJson(Map<String, dynamic> map)
For internal use with json_serializable.
factory
HasMany.remove()

Properties

first → E
no setter
hashCode → int
The hash code for this object.
no setterinherited
ids → Set<Object>
Returns IDs in this relationship.
no setter
isEmpty → bool
no setter
isInitialized → bool
no setterinherited
isNotEmpty → bool
no setter
isPresent → bool
Whether the relationship has a value.
no setterinherited
keys → Set<String>
Returns keys in this relationship.
no setter
length → int
no setter
props → List<Object?>
The list of properties that will be used to determine whether two instances are equal.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
stringify → bool?
If set to true, the toString method will be overridden to output this instance's props.
no setterinherited

Methods

add(E value, {bool notify = true}) → bool
Add a value to this Relationship
contains(Object? element) → bool
initialize({required DataModelMixin<DataModelMixin> owner, required String name, String? inverseName, Set<String>? overrideKeys}) → Relationship<E, Set<E>>
Initializes this relationship (typically when initializing the owner in DataModelMixin) by supplying the owner, and related metadata. overrideKeys ignores if the relationship was previously initialized.
inherited
map<T>(T f(E)) → Iterable<T>
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
remove(Object? value, {bool notify = true}) → bool
Removes a value from this Relationship
toJson() → dynamic
This is used to make json_serializable's explicitToJson transparent.
inherited
toList() → List<E>
toSet() → Set<E>
toString() → String
A string representation of this object.
override
watch() → DelayedStateNotifier<Set<E>>
Returns a StateNotifier which emits the latest Set<E> representing this HasMany relationship.
override
where(bool test(E)) → Iterable<E>

Operators

operator ==(Object other) → bool
The equality operator.
inherited