MiddlewareClass<State> class
abstract
Defines a Middleware using a Class interface.
Middleware intercept actions before they reach the reducer. This gives them the ability to produce side-effects or modify the passed in action before they reach the reducer.
For some use cases, a class may be preferred to a function. In these instances, a MiddlewareClass can be used.
Example
class LoggingMiddleware extends MiddlewareClass<int> {
call(Store<int> store, action, NextDispatcher next) {
print('${new DateTime.now()}: $action');
next(action);
}
}
// Create your store with the loggingMiddleware
final store = new Store<int>(
counterReducer,
middleware: [new LoggingMiddleware()],
);
- Implementers
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
call(
Store< State> store, dynamic action, NextDispatcher next) → dynamic - A Middleware function that intercepts a dispatched action
-
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