我有一条最初没有建议的路线。根据操作,我想抓住一个带有Ember数据的建议数组,获取第一个建议并将其分配给控制器。这是我得到的:
App.IndexRoute = Ember.Route.extend({
setupController: function(controller, model) {
this._super(controller, model);
controller.set('suggestion', null);
},
actions: {
getSuggestion: function() {
suggestion = this.store.find('suggestion').then(function(s) {
return s.get('firstObject');
});
this.controller.set('suggestion', suggestion);
}
}
});
问题是suggestion
变量,执行getSuggestion
操作后,它仍然是一个承诺。解决承诺后,我如何才能设置控制器变量?或者如何让其后来解决并使用实际对象更新变量?
将属性设置为诺言的分辨率:
actions: {
getSuggestion: function() {
var self = this;
this.store.find('suggestion').then(function(s) {
self.controller.set('suggestion', s.get('firstObject'));
});
}
}
您应该将'建议'内部设置为'然后'块
App.IndexRoute = Ember.Route.extend({
setupController: function(controller, model) {
this._super(controller, model);
controller.set('suggestion', null);
},
actions: {
getSuggestion: function() {
controller = this.controller;
this.store.find('suggestion').then(function(s) {
suggestion = s.get('firstObject');
controller.set('suggestion', suggestion);
});
}
}
});
您可以在控制器之间更改控制器变量,
如果要更改" HOME"控制器的控制器变量,则需要将Home Controller包含在控制器中。
示例: -
export default Ember.Controller.extend({
needs: ['home'],
changeVariable: function(){
if(..){
this.set('controllers.home.isMyHomePage', false);
}else{
this.set('controllers.home.isMyHomePage', true);
}
}
});
您可以使用RSVP做这样的事情?
App.IndexRoute = Ember.Route.extend({
setupController: function(controller, model) {
this._super(controller, model);
controller.set('suggestion', null);
},
actions: {
getSuggestion: function() {
var suggestions = this.store.find('suggestion');
Ember.RSVP.all(suggestions).then(function(s) {
this.controller.set('suggestion', s.get('firstObject'));
}.bind(this));
}
}
});