Consider this code
export class TestController {
constructor() {
this.socket = io();
this.movies = {};
this.socket.emit('getAllMovies', '');
this.socket.on('allMovies', this.listMovies.bind(this));
}
listMovies(data){
this.movies = JSON.parse(data);
console.log(this.movies);
}
}
and view (using controllerAs syntax)
<div>
{{ctrl.movies}}
</div>
When I open the page, it shows {}, then data from websocket incomes (correctly), biding to this.movies, and nothing changes. Looks like two-way biding is broken. Anyone has idea why?
The problem is not w/ ES6 but comes from the fact that angular change detection mechanism is not aware about your socket and the fact that it has to run digest loop.
Take a look at this tutorial . Socket io here was wrapped with a service that manually calls $apply on every socket event.
app.factory('socket', function ($rootScope) {
var socket = io.connect();
return {
on: function (eventName, callback) {
socket.on(eventName, function () {
var args = arguments;
//NB!
$rootScope.$apply(function () {
callback.apply(socket, args);
});
});
}
};
});
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.