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功能丰富的wordpress点赞插件不少,但对于要在主题中集成简单文章点赞功能的需求,插件就显得不合适,于是乎非插件实现文章点赞功能的方法就诞生,实现思路是:可以通过ajax实时显示点赞数量,自定义字段保存赞数量,Cookies禁止重新点赞。
具体操作步骤。
1、在当前主题functions.php文件中添加代码:- add_action('wp_ajax_nopriv_bigfa_like', 'bigfa_like');
- add_action('wp_ajax_bigfa_like', 'bigfa_like');
- function bigfa_like(){
- global $wpdb,$post;
- $id = $_POST["um_id"];
- $action = $_POST["um_action"];
- if ( $action == 'ding'){
- $bigfa_raters = get_post_meta($id,'bigfa_ding',true);
- $expire = time() + 99999999;
- $domain = ($_SERVER['HTTP_HOST'] != 'localhost') ? $_SERVER['HTTP_HOST'] : false; // make cookies work with localhost
- setcookie('bigfa_ding_'.$id,$id,$expire,'/',$domain,false);
- if (!$bigfa_raters || !is_numeric($bigfa_raters)) {
- update_post_meta($id, 'bigfa_ding', 1);
- }else {
- update_post_meta($id, 'bigfa_ding', ($bigfa_raters + 1));
- }
- echo get_post_meta($id,'bigfa_ding',true);
- }
- die;
- }
复制代码 2、在主题的header.php文件的</head>前添加以下代码:<script type="text/javascript">
$(document).ready(function() {
$.fn.postLike = function() {
if ($(this).hasClass('done')) {
alert('您已赞过本博客');
return false;
} else {
$(this).addClass('done');
var id = $(this).data("id"),
action = $(this).data('action'),
rateHolder = $(this).children('.count');
var ajax_data = {
action: "bigfa_like",
um_id: id,
um_action: action
};
$.post("<?php bloginfo('url');?>/wp-admin/admin-ajax.php", ajax_data, function(data) {
$(rateHolder).html(data);
});
return false;
}
};
$(document).on("click", ".favorite", function() {
$(this).postLike();
});
});
</script>
3、在当前主题的single.php文件的<?php the_content();?>代码下面添加点赞按钮调用代码:- <div class="post-like">
- <a href="javascript:;" data-action="ding" data-id="<?php the_ID(); ?>" class="favorite<?php if(isset($_COOKIE['bigfa_ding_'.$post->ID])) echo ' done';?>">喜欢 <span class="count">
- <?php
- if( get_post_meta($post->ID,'bigfa_ding',true) ){
- echo get_post_meta($post->ID,'bigfa_ding',true);
- } else {
- echo '0';
- }
- ?></span>
- </a>
- </div>
复制代码 4、在当前主题的style.css文件中添加点击按钮样式(仅供参考):- .post-like{text-align:center;padding:10px}
- .post-like a{ background-color:#21759B;border-radius: 3px;color: #FFFFFF;font-size: 12px;padding: 5px 10px;text-decoration: none;outline:none}
- .post-like a.done, .post-like a:hover{background-color:#eee;color:#21759B;}
- .post-like a.done{cursor:not-allowed}
复制代码 注:需要引用版本为1.10或以上的jQuery。
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