How to communicate between Angular DART controllers

Question

i have two controllers and want to \"send\" between them object. I have something like this:

@NgController(selecto         


        

Answer 1

You could use
* scope.$emit
* scope.$broadcast
* scope.$on

@grohjy s solution might work also, depending on your requirements

Scope scope;
UserController(this.scope) { // get access to the scope by adding it to the constructor parameter list
  // sender
  scope.$emit('my-event-name', [someData, someOtherData]); // propagate towards root
  scope.$broadcast('my-event-name', [someData, someOtherData]); // propagate towards leaf nodes (children)
  scope.$parent.$broadcast('my-event-name', [someData, someOtherData]); // send to parents childs (includes silblings children)
  scope.$root.$broadcast('my-event-name', [someData, someOtherData]); // propagate towards leaf nodes starting from root (all nodes)

  // receiver
  scope.$on('my-event-name', (ScopeEvent e) => myCallback(e)); // call myCallback when an `my-event-name` event reaches me
}

just write scope.$emit (or one of the other methods) and ctrl+mouseclick to navigate to the the doc comments to get more information.

Answer 2

I don't fully follow your question, could you include the whole code for better understanding.

Here is one example, which might answer to your question: https://github.com/angular/angular.dart/issues/264

Answer 3

With the newest AngularDart library (0.10.0), Günter Zöchbauer's solution is still correct, but the syntax has changed a bit:

// Receiver
//import 'dart:async';
String name;
Scope scope;
ReceiverConstructor(this.scope) {
  Stream mystream = scope.on('username-change');
  mystream.listen(myCallback);
}

void myCallback(ScopeEvent e) {
  this.name = e.data;
}


// Sender
scope.emit("username-change", "emit");
scope.broadcast("username-change", "broadcast");
scope.parentScope.broadcast("username-change", "parent-broadcast");
scope.rootScope.broadcast("username-change", "root-broadcast");