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所属分类:WordPress
使用ajax+自定义字段功能给WordPress添加文字点赞功能,点赞!!
实现原理
通过自定义字段保存赞数量,通过cookies来禁止重复赞。
代码部署
将下面代码添加进function.php
- 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;
- }
将以下代码扔进footer.php
文件
- <script type="text/javascript">
- $.fn.postLike = function() {
- if ($(this).hasClass('done')) {
- 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("/wp-admin/admin-ajax.php", ajax_data,
- function(data) {
- $(rateHolder).html(data);
- });
- return false;
- }
- };
- $(document).on("click", ".favorite",
- function() {
- $(this).postLike();
- });
- </script>
然后打开你的single.php
文件,搜索这段代码,在这段代码后面添加以下代码
- <div class="post-like">
- <a href="javascript:;" data-action="ding" data-id="<?php the_ID(); ?>" class="favorite<?php if(isset($_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>
现在是不是就已经好了??还没有呢,现在的效果还不好看,添加一段代码就好了,将这段代码扔进style.css
文件,最底部就可以
- .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}