碰巧，我的一个网站上有一个非常类似的东西，允许管理员更新一些自定义用户元。
基本上，您需要添加一个额外的列，然后用一个链接填充它，以完成您想要的操作。当您单击链接时，一些jQuery会触发AJAX请求以更新用户角色，然后您会被重定向回/wp-admin/users.php 页
这里的主要工作是wp_update_user() function, 我鼓励你看看。
首先，将此添加到functions.php 文件以添加附加列及其内容。这还将添加AJAX函数，当调用它时，它将真正发挥所有的作用-
/** Manage custom columns on instances of \'WP_List_Table\' */
add_action(\'init\', \'my_setup_custom_columns\', 110, 0);
function my_setup_custom_columns(){
/** Manage columns on the WP_Users_List_Table */
add_filter(\'manage_users_columns\', \'my_add_custom_columns\');
/** Populate additional columns on the WP_Users_List_Table */
add_action(\'manage_users_custom_column\', \'my_fill_custom_columns_return\', 10, 3);
}
/**
* Add additional custom columns to the list table views in the admin area
*
* @param required array $columns The columns that currently exist
*/
function my_add_custom_columns($columns){
/** Grab the page that is currently being viewed */
global $pagenow;
/** Users specific columns (http://www.blog.com/wp-admin/users.php) */
if($pagenow === \'users.php\') :
$new_columns[\'my-change-user-role\'] = __(\'Change Role\');
endif;
$columns = $columns + $new_columns;
return $columns;
}
/**
* Fill the custom columns by returning data
*
* @param required string $column_value The current column value (in this case \'null\' since the columns are new)
* @param required string $column_name The name of the column to return data for
* @param required integer $object_id The ID of the curent object to fill the column for
* @return string $column_value The value to fill the column with
*/
function my_fill_custom_columns_return($column_value, $column_name, $object_id){
switch($column_name) :
/**
* ID (the ID of the current object)
*/
case \'my-change-user-role\' :
$user = get_userdata($object_id);
$role = $user->roles[0];
if($role === \'legend\') :
$column_value = \'<span user-id="\' . $object_id . \'" new-role="subscriber" class="change-user-role">Downgrade to a Hero</span>\';
elseif($role === \'hero\') :
$column_value = \'<span user-id="\' . $object_id . \'" new-role="document_administrator" class="change-user-role">Upgrade to a Legend</span>\';
else:
$column_value = \'—\';
endif;
break;
endswitch;
return $column_value;
}
/**
* Change the role of a given user
*/
add_action(\'wp_ajax_change_user_role\', \'my_update_user_role\');
function my_update_user_role(){
/** Update the user role */
$args = array(
\'ID\' => $_POST[\'user_id\'],
\'role\' => $_POST[\'new_role\']
);
$result = wp_update_user($args);
/** Check whether or not the update was successful */
if(is_wp_error($user_id)) :
$message = \'An unexpected error occured, please try again.\';
$url = false;
else :
$message = \'success\';
$url = admin_url(\'users.php\');
endif;
$return = array(
\'message\' => $message,
\'url\' => $url
);
echo json_encode((object)$return);
wp_die(); // This is required to terminate immediately and return a proper response
}
接下来，将其添加到查看管理区域时可以访问的样式表中-
.wp-list-table.users .manage-column.column-my-change-user-role{
width: 150px;
}
.wp-list-table.users span.change-user-role{
color: #0074A2;
cursor: pointer;
}
.wp-list-table.users span.change-user-role:hover{
color: #2EA2CC;
}
最后，将此添加到查看管理区域时可以访问的JS文件中-
jQuery(function($){
$(document).ready(function(){
updateUser.init();
});
var updateUser = {
/**
* Psuedo constructor
*/
init : function(){
this.userChangeRoleButtons = $(\'.wp-list-table.users span.change-user-role\'); // Grab all instance of the buttons to change the user role
this.createEvents(); // Create the events to be handled by this object
}, // init
/**
* Create the events that are to be handled by this object
*/
createEvents : function(){
var t = this; // This object
/**
* Handle clicks of the change user role buttons
*/
this.userChangeRoleButtons.on(\'click\', function(e){
t.changeRole($(this));
});
}, // createEvents
/**
* Updates the user role as required
*/
changeRole : function(clicked){
var t = this, // This object
user_id = clicked.attr(\'user-id\'),
new_role = clicked.attr(\'new-role\');
var data = { // The data object to pass to the AJAX request
action: \'change_user_role\',
user_id: user_id,
new_role: new_role
};
/** Make the AJAX request to update the download count */
var action_jqxhr = $.post(ajaxurl, data, function(response){
/** Parse the JSON response */
var obj = JSON.parse(response);
/** Ensure that there were no errors and update the \'Change role\' button text */
if(obj.message.indexOf(\'error\') === -1){ // There was no error, redirect the user back to this page
top.location.replace(obj.url);
} else { // There was an error, tell the user about it
alert(obj.message); // Show the error to the user
}
}).fail(function(){ // There was an AJAX error...
alert(\'An unexpected error occured, please try again.\');
});
} // changeRole
};
});
