有玩过facebook的一定会facebook的内容自动加载印象深刻，而默认 BuddyPress Activity Stream 则没有自动加载内容的功能，每次需要点击 Load more 才能载入更多的内容，用户体验并不好，那么是否可以像facebook一样实现滚动到底部的时候自动加载内容呢？答案是100%肯定的，而且非常简单，实现方法如下：
新建一个文件取名为 activity-loader.js 并且放置在模版目录的 _inc 文件夹里边，并且插入如下代码：
jQuery(document).ready( function() {
var jq=jQuery;
var is_activity_loading=false;//we use it to make sure that we don not try to send the request again and again
//let us check on window scroll event
jq(window).scroll(function() {
//find the visible load more button
//since bp does not move load more, we need to find the last one which is visible
var load_more_btn=jq(".load-more:visible");
//if there is no visible button, there are no mor activities, let us retrn
if(!load_more_btn.get(0))
return;
//find the offset of the button
var pos=load_more_btn.offset();
//if the window height+scrollTop is greater than the offset top, we have reached the button, let us load more activity
if(jq(window).scrollTop() + jq(window).height() > pos.top ) {
load_more_activity();
}
});
/**
* The routine loads more activity
* We call it whenever we reach at the bottom of the activity listing
*
*/
function load_more_activity(){
//check if activity is loading, means is there already a request doing this
//if yes, just return and let the other request handle it
if(is_activity_loading)
return false;
//so, it is a new request, let us set the var to true
is_activity_loading=true;
//add loading class to load more
//theme authors may need to change the selector if there theme has a different id
//I am doing it for bp-default/derivative themes
//change #content to whatever you have named it in your theme
jq("#content li.load-more").addClass('loading');
if ( null == jq.cookie('bp-activity-oldestpage') )
jq.cookie('bp-activity-oldestpage', 1, {
path: '/'
} );
var oldest_page = ( jq.cookie('bp-activity-oldestpage') * 1 ) + 1;
//send the ajax request
jq.post( ajaxurl, {
action: 'activity_get_older_updates',
'cookie': encodeURIComponent(document.cookie),
'page': oldest_page
},
function(response)
{
jq(".load-more").hide();//hide any load more button
jq("#content li.load-more").removeClass('loading');//theme authors, you may need to change it
//update cookie
jq.cookie( 'bp-activity-oldestpage', oldest_page, {
path: '/'
} );
//and append the response
jq("#content ul.activity-list").append(response.contents);
//since we are done, let us set the state that activity has loaded
is_activity_loading=false;
}, 'json' );
return false;
}
});//end of dom ready
然后在模版目录里边的functions.php里边插入如下代码：
function bp_activity_autoloader_inc_js(){
//you can change get_stylesheet_directory_uri() to get_tmplate_directory_uri() if you are author of a parent theme and want to include it in parent theme and not in the child theme.
wp_enqueue_script('activity-auto-loader', get_stylesheet_directory_uri().'/_inc/activity-loader.js',array('jquery'));//should we make it dependent on 'dtheme-ajax-js'?
}
add_action('bp_enqueue_scripts','bp_activity_autoloader_inc_js',30);
保存上传覆盖即可，前台测试一下你会发现效果很不错，搞定收工。
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用Facebook上一个好玩的应用查看了一下我的性格特点，感觉有点意思，特意截图分享一下，嘿嘿！
从这个饼状图里边欣慰的看到了占据最大比重的是自己一直笃信的善良，而位居第二位的竟然是没有意料到的迷信，呵呵，另外对于10%的强权也不知道从哪点分析出来的，当然仅仅是一个好玩的游戏，娱乐而已，不必当真。