我想首先使用 Backbone.js 渲染一个视图,该视图显示从服务器拉取的文章。然后,我想将其标记为“已见”,并将未见消息的计数返回给路由器,因为它需要可供其他视图使用。
所以在我的路由器中,我有:
getArticle: function (id) {
require(["app/models/article", "app/views/Article"], function (models, Article) {
var article = new models.Article({id: id});
article.fetch({
success: function (data) {
var articleView = new Article({model: data, message_count:that.message_count});
slider.slidePage(articleView.$el);
$.when(articleView.saveView()).done(function(data){
console.log('in when and data is ');
console.log(data);
});
},
error: function(){
console.log('failed to fecth artcie');
}
});
});
},
文章视图中的 saveView() 是:
saveView: function(){
var viewDetails = [];
viewDetails.device_id = this.options.device_id;
viewDetails.article_id = this.model.id;
viewDetails.project_title = project_title;
var article_view = new models.ArticleView();
article_view.save(viewDetails,
{
success: function(data) {
var count = data.get('count');
console.log('in saveView() success and count is ');
console.log(count);
return count;
},
error: function(model, xhr, options){
console.log(xhr.responseText);
},
});
},
这会调用 REST API,记录文章的查看情况,然后返回未查看文章的计数。这会导致控制台输出:
在当和数据为 router.js:286 未定义 router.js:287 中
saveView() 成功且计数为 Article.js:45 4
所以,不知何故,$.when
不起作用,因为它在执行之前没有等待 Ajax 请求发送.done
脚本。有任何想法吗?