wordpress教程：用户注册页面添加更多资料

wordpress默认的注册页面只有填写邮箱选项，如果需要，我们可以自行添加QQ、新浪微博、Google+和网站四项，前三项存储在wp_usermeta表中，网站是WordPressProfile的默认字段，存储在wp_user表中，有固定的id叫做user_url。这四项全部设置为可选，用户不填也无所谓。

首先改一下注册界面，通过action register_form：

add_action( 'register_form', 'ugp_show_extra_register_fields' );
function ugp_show_extra_register_fields(){
?>
<p>
<label for="password"><?php _e( 'Password', 'ugp-domain' );?><br/>
<input id="password" class="input" type="password" tabindex="30"  size="25" value="" name="password" />
</label>
</p>
<p>
<label for="repeat_password"><?php _e( 'Repeat password', 'ugp-domain' );?><br/>
<input id="repeat_password" class="input" type="password" tabindex="40" size="25" value="" name="repeat_password" />
</label>
</p>
<p>
<label for="url"><?php _e( 'Your Website', 'ugp-domain');?> <?php _e('(Optional)', 'ugp-domain' ); ?><br/>
<input id="url" class="input" type="text" tabindex="50" size="25" value="<?php if( empty($_POST['url']) ) echo 'http://'; else echo $_POST['url']; ?>" name="url" />
</label>
</p>
<p>
<label for="qq">QQ <?php _e('(Optional)', 'ugp-domain' ); ?><br/>
<input id="qq" class="input" type="text" tabindex="60"  size="25" value="<?php echo $_POST['qq']?>" name="qq" />;
</label>
</p>
<p>
<label for="sina_weibo"><?php _e( 'Sina Weibo', 'ugp-domain' ); ?> <?php _e('(Optional)', 'ugp-domain' ); ?><br/>
<input id="sina_weibo" class="input" type="text" tabindex="70" size="25" value="<?php echo $_POST['sina_weibo']?>" name="sina_weibo" />
</label>
</p>
<p>
<label for="googleplus">Google+ <?php _e('(Optional)', 'ugp-domain' ); ?><br/>
<input id="googleplus" class="input" type="text" tabindex="80" size="25" value="<?php echo $_POST['googleplus']?>" name="googleplus" />
</label>
</p>
<p>
<label for="are_you_human"><?php _e( 'Sorry, but we must check if you are human. What is the name of website you are registering for?' , 'ugp-domain' ); ?><br/>
<input id="are_you_human" class="input" type="text" tabindex="90" size="25" value="" name="are_you_human" />
</label>;
</p>
<?php
}

其次，改一下提交后的处理程序，更新自定义字段。如果用户填写了网址，需要简单的验证一下。

add_action( 'user_register', 'ugp_register_extra_fields', 100 );
function ugp_register_extra_fields( $user_id ){
$userdata = array();
$userdata['ID'] = $user_id;
if( $_POST['qq'] !== '' )     $userdata['qq'] = $_POST['qq'];
if( $_POST['sina_weibo'] !== '' )    $userdata['sina_weibo'] = $_POST['sina_weibo'];
if( $_POST['googleplus'] !== '' )    $userdata['googleplus'] = $_POST['googleplus'];
if( $_POST['url'] !== '' )    $userdata['user_url'] = $_POST['url'];
if( $_POST['url'] !== '' || $_POST['url'] !== 'http://') {
$userdata['user_url'] = esc_url_raw( $_POST['url'] );
$userdata['user_url'] = preg_match('/^(https?|ftps?|mailto|news|irc|gopher|nntp|feed|telnet):/is', $userdata['user_url']) ? $userdata['user_url'] : 'http://'.$userdata['user_url'];
}
if ( $_POST['password'] !== '' ) {
$userdata['user_pass'] = $_POST['password'];
}
$new_user_id = wp_update_user( $userdata );
}

用户资料增加字段
既然注册的时候允许用户填写一些基本信息，在用户资料中也要有所体现，方法在文章《WordPress小技巧：为用户资料添加新的联系方式》中介绍过，不在赘述。

去掉WordPress默认的资料字段，添加自定义字段：

add_filter( 'user_contactmethods', 'ugp_custom_contact_fields' );
function ugp_custom_contact_fields( $contactmethods ) {
$contactmethods['qq'] = 'QQ';
$contactmethods['sina_weibo'] = __('Sina Weibo', 'ugp-domain');
$contactmethods['googleplus'] = 'Google+';
unset( $contactmethods['yim'] );
unset( $contactmethods['aim'] );
unset( $contactmethods['jabber'] );
return $contactmethods;
}