angularjs实现点击加载更多

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做个人博客时遇到这个需求,首先说下遇到难点:
1.动态插入指令,angular并不能正确渲染,而是以普通的html标签插入,也没有class=”ng-scope”,这与angularjs的加载顺序有关,下面再说。
2.angualr里的$http服务是异步的,没有同步的概念,当用户不停的点击“加载更多”按钮时,数据如果还未请求过来,等响应完毕后会出现相同的好几组数据。


对于第一点:
(图片来自http://my.oschina.net/brant/blog/419641)
图片来自http://my.oschina.net/brant/blog/419641” title=”” /> <br>因为第一次运行已结束了,所以需要重新编译</p><pre class=//需要注入$compile服务var el = $compile("<articleblock ng-repeat='article in articles" + i + "'></articleblock>")($scope); //重新compile一下,再append $("#main").append(el);

具体如下:directive.js

indexAPP.directive('pagination', function($compile) {    return {        restrict: 'AEMC', // E = Element, A = Attribute, C = Class, M = Comment        scope: true,        template: "<input type='button' value='加载更多'/>",        link: function($scope, iElm, iAttrs, controller) {            var i =1; //计数,第几次加载            $("pagination input").bind("click", function() {                $("pagination input").attr("disabled", "true");                $("pagination input").val("正在加载....败着急");                $scope.getAbstract();                var el = $compile("<articleblock ng-repeat='article in articles" + i + "'></articleblock>")($scope); //重新compile一下,再append                i++;                $("#main").append(el);            })        }    }});

对于第二点:查阅资料发现可以用promise模拟同步,但我选择了投机取巧的解决方案,就是,在第一次未加载完之前,把按钮设为禁用,需要用到then()
article_controller.js

articleModule.controller('ArticleCtrl', function($scope, $http) {    var offset = 0, //当前页数        limit = 2,  //一页多少篇        i = 0; //第几次加载    $scope.getAbstract = function() {        $http.get('api/getPostAbstract', {                params: {                    offset, limit                }            })            .success(function(data, status, headers, config) {                if (i == 0) {                    $scope.articles = data;                    i++;                } else if (i >= 1)                    $scope["articles" + i++] = data;                offset = offset + limit;            }).error(function(data, status, headers, config) {                throw new Error('Something went wrong...');            }).then(function(result) {                $("pagination input").removeAttr("disabled");                $("pagination input").val("点击加载更多");                if(result.data.length<=0) $("pagination input").val("没有更多文章啦~");            });    }    $scope.getAbstract();});

article.html

<article class="block post" id="{{article.id}}">    <span class="round-date">        <span class="month" ng-bind="(article.post_time |dateUtil|date:'M')+'月'"></span>    <span class="day" ng-bind="article.post_time |dateUtil| date:'d'"></span>    </span>    <header>        <p class="title">            <a href="articleDetail.html?{{article.id}}" ng-bind="article.title" target="_blank"></a>        </p>        <p class="article-meta">            <i class="fa fa-paper-plane-o" ng-bind="article.post_time | date:'yyyy-MM-dd'"></i>            <i class="fa fa-eye" ng-bind="article.pageviews"></i>            <i class="fa fa-comment-o" ng-bind="article.comments"></i></p>        <div class="tag-meta">            <div class="tag" ng-repeat="tag in article.tags" ng-bind="tag"></div>        </div>    </header>    <div class="article-content animate-show" ng-bind-html="article.post_abstract | to_trusted" ng-show="showMe"></div>    <span class="fa fa-angle-double-up compress" ng-click="toggle()"></span></article>

我知道我这里通过两边都设置i,不大好,但也暂时找不到好办法,我想在then里面return当前的i,但是好像实现不了,嗯嗯嗯,纠结,而且http服务貌似应该放在factory方便使用?
我这样功能都能实现,就是感觉代码质量不够高,希望能早到更好的办法

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