App.BaseRoute = App.AuthenticatedRoute.extend({
setupController: function(controller, model){
var cuser = this.controllerFor('application').get('currentUser');
controller.set('model',model);
this.controllerFor('base').set("currTags",App.User.getUserTags(cuser._id.$oid));
}
});
App.IndexRoute = App.BaseRoute.extend({
model: function(params) {
return {"adsf" :"blah"};
},
setupController: function(controller, model){
this._super(controller,model);
this.controllerFor('posts').set('model',model);
}
});
App.User.reopenClass({
getUserTags: function(userid) {
var currTags = []; //create an empty object
currTags.set('isLoaded',false);
console.log(currTags);
$.ajax({
type: "GET",
url : "/user/"+userid+"/default_tags",
dataType: "application/json",
//contentType : "application/json"
}).then(this,function(data){
data = JSON.parse(data.responseText);
data.models.tags.forEach(function(tag){
var model = App.Tag.create(tag);
model.value = model.name;
currTags.addObject(model); //fill your array step by step
});
console.log(currTags);
currTags.set("isLoaded", true);
});
console.log(currTags);
return currTags;
}
});
App.IndexController = Ember.ArrayController.extend({
needs: ['application','base' ,'posts'],
currentUser: Ember.computed.alias("controllers.application.currentUser"),
posts : Ember.computed.alias("controllers.posts"),
currTags: Ember.computed.alias("controllers.base.currTags"),
actions: {
initCurrentTags: function() {
}.observes('currTags.isLoaded')
}
});
我更新了 currTags，但 initCurrentTags 从未被命中。
最佳答案
计算属性和观察不应该存在于操作散列中。
不正确
App.IndexController = Ember.ArrayController.extend({
needs: ['application','base' ,'posts'],
currentUser: Ember.computed.alias("controllers.application.currentUser"),
posts : Ember.computed.alias("controllers.posts"),
currTags: Ember.computed.alias("controllers.base.currTags"),
actions: {
initCurrentTags: function() {
}.observes('currTags.isLoaded')
}
});
正确
App.IndexController = Ember.ArrayController.extend({
needs: ['application','base' ,'posts'],
currentUser: Ember.computed.alias("controllers.application.currentUser"),
posts : Ember.computed.alias("controllers.posts"),
currTags: Ember.computed.alias("controllers.base.currTags"),
initCurrentTags: function() {
}.observes('currTags.isLoaded')
actions: {
}
});
关于javascript - Ember.js 观察者在异步更新后不触发，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19686864/