dongxia1390 2016-07-27 06:28
浏览 97
已采纳

Wordpress ajax数据库调用

I am struggling with getting ajax to work, if someone can guide me, it'd be greatly appreciated.

I am building this as a plugin.

I have a file named courselinkscript.js and contains this

jQuery(document).ready(function($){

jQuery(".courselist").change(function () {

    jQuery.ajax({
            type:"POST",
            url: my_ajax_object.ajax_url,
            data: { 'action': 'getLinkedCourses' }
            //where/what do I put here to work with the data I received. 
    })


    });
});

Then in my main php file named course-listing.php I have this

function getLinkedCourses() {
    global $wpdb;
    $results = $wpdb->get_results( 'SELECT list.ID, list.course, list.cost, list.length, link.CourseID FROM `wp_course_list` AS list INNER JOIN `wp_course_link` as link ON (list.ID=link.LinkID) WHERE link.CourseID = 1', OBJECT );
    echo json_encode($results);

wp_die();

}


function wpb_adding_scripts() {
wp_register_script('courselinkscript', plugins_url('courselinkscript.js', __FILE__), array('jquery'),'1.0', true);
wp_enqueue_script('courselinkscript');
wp_localize_script( 'courselinkscript', 'my_ajax_object', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) );
}

add_action( 'wp_ajax_my_list', 'getLinkedCourses' );

add_action( 'wp_enqueue_scripts', 'wpb_adding_scripts' );  

My calls to ajax don't work as I don't understand what needs to be done to initalise it. Any help is appreciated.

  • 写回答

1条回答 默认 最新

  • dongyinshua9996 2016-07-27 06:45
    关注

    Use the below mentioned code. It should work.

    function getLinkedCourses() {
       global $wpdb;
       $results = $wpdb->get_results( 'SELECT list.ID, list.course, list.cost, list.length, link.CourseID FROM `wp_course_list` AS list INNER JOIN `wp_course_link` as link ON (list.ID=link.LinkID) WHERE link.CourseID = 1', OBJECT );
       echo json_encode($results);
    
      wp_die();
    
    }
    
    
    function wpb_adding_scripts() {
       wp_register_script('courselinkscript', plugins_url('courselinkscript.js', __FILE__), array('jquery'),'1.0', true);
       wp_enqueue_script('courselinkscript');
       wp_localize_script( 'courselinkscript', 'my_ajax_object', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) );
    }
    
    add_action( 'wp_ajax_getLinkedCourses', 'getLinkedCourses' );
    add_action( 'wp_ajax_nopriv_getLinkedCourses', 'getLinkedCourses' );
    // add_action( 'wp_ajax_my_list', 'getLinkedCourses' );
    
    add_action( 'wp_enqueue_scripts', 'wpb_adding_scripts' );
    

    Replace your javascript with the below code:

     jQuery(document).ready(function($){
    
       jQuery(".courselist").change(function () {
    
          jQuery.ajax({
             type:"POST",
             url: my_ajax_object.ajax_url,
             data: { 'action': 'getLinkedCourses' },
             //where/what do I put here to work with the data I received.
             success: function(data) {
                 var obj = jQuery.parseJSON(data);
                 console.log(obj);
             },
          });
    
       });
    }); 
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?

悬赏问题

  • ¥15 nginx 配置静态html访问 ,后台登录时页面始终被重定向到登录页,无法访问到后台的静态html页
  • ¥20 自动登录的j2ee程序编译
  • ¥15 echarts如何对X轴进行分组
  • ¥15 维纳滤波器的实验题及计算机实现,求解
  • ¥15 fluent模拟静态气体扩散
  • ¥15 java根据模板,生成word文档,需要带目录
  • ¥15 广告联盟的兜底广告是什么意思
  • ¥15 如何证明高斯噪声的包络公式
  • ¥150 寻找王者荣耀开发作者,合作或者解答
  • ¥15 关于cpci总线的几个问题,别用人工智能回答