我希望从JSON提要中获得无限/无限滚动数据。我有兴趣使用Backbone / Underscore / jQuery完成与Pinterest或Google Reader类似的东西。
如何将infiniScroll.js模块应用到我的骨干网视图?目标是在靠近末尾滚动时获取并附加下一页的(“页面”网址参数)推文的页面。问题:到达页面底部时,将获取相同的JSON页面提要。如何将网址中的page
参数更改为&page=2
等
演示: http://dl.dropbox.com/u/19974044/test.html或http://jsfiddle.net/k4rPP/3/
// Define the model
Tweet = Backbone.Model.extend();
// Define the collection
Tweets = Backbone.Collection.extend({
model: Tweet,
// Url to request when fetch() is called
url: 'https://api.twitter.com/1/statuses/user_timeline.json?include_entities=true&include_rts=true&trim_user=false&count=10&screen_name=cnn&page=1&callback=?',
parse: function (response) {
return response;
},
// Overwrite the sync method to pass over the Same Origin Policy
sync: function (method, model, options) {
var that = this;
var params = _.extend({
type: 'GET',
dataType: 'jsonp',
url: that.url,
processData: false
}, options);
return $.ajax(params);
}
});
// Define the View
TweetsView = Backbone.View.extend({
initialize: function () {
_.bindAll(this, 'render');
// create a collection
this.collection = new Tweets;
// Fetch the collection and call render() method
var that = this;
this.collection.fetch({
success: function () {
that.render();
}
});
// infiniScroll.js integration
this.infiniScroll = new Backbone.InfiniScroll(this.collection, {success: this.appendRender, param:'page', includePage:true});
},
// Use an extern template
template: _.template($('#tweetsTemplate').html()),
render: function () {
// Fill the html with the template and the collection
$(this.el).html(this.template({
tweets: this.collection.toJSON()
}));
}
});
var app = new TweetsView({
// define the el where the view will render
el: $('body')
});
答案 0 :(得分:1)
url属性可以指定为函数而不是字符串。所以你可以用这样的东西代替它:
...
currentPage: 0,
url: function() {
this.currentPage++;
return 'https://path.to.url/?page=' + this.currentPage;
},
...