灰烬嵌套的路线和承诺

Question

When accessing an ember URL directly with nested routes, the app does not wait for parent promises to resolve before loading nested resources.

Here's an example code:

var App = Ember.Application.create();

App.Router.map(function () {
    this.resource('index', {path: "/"}, function () {
        this.resource('project', {path: "/project/:id"}, function () {
            this.resource('file', {path: "/file/:encodedPath"});
        });
    });
});

App.IndexRoute = Ember.Route.extend({
    model: function () {
        return Ember.$.getJSON('/list-projects');
    }
});

App.ProjectRoute = Ember.Route.extend({
    setupController: function (controller, model) {
        return Ember.$.getJSON('/load-project?id=' + model.id).then(
                function (data) {
                    controller.set('model', data);
                });
    }
});

App.FileRoute = Ember.Route.extend({
    setupController: function (controller, model) {
        var project = this.modelFor('project');
        var url = '/load-file?project=' + project.id + '&path=' + model.encodedPath;

        return Ember.$.getJSON(url).then(
            function (data) {
                controller.set('model', data);
            });

    }
});

Is it possible to wait for the project data to resolve before loading file data?

The problem only occurs when loading the URL directly in the browser: http://mywebsite.com/#/project/1234/file/test.txt

Thanks.

Answer 1

As per my comments to your question, this should do the trick. Note the model hook can return a Promise whereas setupController shouldn't return anything.

Here is a JSBin that tries correspond with your project - obviously the data is different: http://emberjs.jsbin.com/letalehoje/1/edit?html,js,console,output

Make sure you view it externally as well: http://emberjs.jsbin.com/letalehoje/1/#/project/1/file/text1-1.txt

App.ProjectRoute = Ember.Route.extend({
    model: function(params) {
        return Ember.$.getJSON('/load-project?id=' + params.id);
    }
});

App.FileRoute = Ember.Route.extend({
    model: function(params) {
        var projectPromise = this.modelFor('project');

        return Ember.RSVP.resolve(projectPromise).then(function(project) {
            // this is the promise that should be returned for the FileRoute model
            return Ember.$.getJSON('/load-file?project=' + project.id + '&path=' + params.encodedPath);
        });
    }
});