如何在WordPress后台首页添加widget

By minirplus on 2014-01-23 in 源码研究

本次研究的插件是backupbuddy，WordPress后台首页widget如下图，看看backupbuddy是怎么写的

首先找到了它的显示代码，用于输出widget内容

<?php

class pb_backupbuddy_dashboard extends pb_backupbuddy_dashboardcore {//继承pb_backupbuddy_dashboardcore类

/* stats()

* Displays (echos out) an overview of stats into the WordPress Dashboard.

* @return null

function stats() {

echo '<style type="text/css">';

echo ' .pb_fancy {';

echo ' font-family: Georgia, "Times New Roman", "Bitstream Charter", Times, serif;';

echo ' font-size: 18px;';

echo ' color: #21759B;';

echo ' }';

echo '</style>';

echo '<div>';

$backup_url = 'admin.php?page=pb_backupbuddy_backup';

$files = glob( backupbuddy_core::getBackupDirectory() . 'backup*.zip' );//搜索备份文件

if ( !is_array( $files ) || empty( $files ) ) {//判断是否有备份

$files = array();//没有则初始化$files为数组

}

echo sprintf( __('You currently have %s stored backups.', 'it-l10n-backupbuddy' ), '<span class="pb_fancy"><a href="' . $backup_url . '">' . count( $files ) . '</a></span>');

if ( pb_backupbuddy::$options['last_backup_finish'] == 0 ) {

echo ' ', __( 'You have not successfully created any backups.', 'it-l10n-backupbuddy' );

} else {

echo ' ', sprintf( __(' Your most recent successful backup was %s ago.', 'it-l10n-backupbuddy' ), '<span class="pb_fancy"><a href="' . $backup_url . '">' . pb_backupbuddy::$format->time_ago( pb_backupbuddy::$options['last_backup_finish'] ) . '</a></span>');

}

echo ' ', sprintf( __('There have been %s post/page modifications since your last backup.', 'it-l10n-backupbuddy' ), '<span class="pb_fancy"><a href="' . $backup_url . '">' . pb_backupbuddy::$options['edits_since_last'] . '</a></span>' );

echo ' <span class="pb_fancy"><a href="' . $backup_url . '">', __('Go create a backup!', 'it-l10n-backupbuddy' ), '</a></span>';

echo '</div>';

}

这段代码只是负责在调用的时候输出显示，下面来找一下

BackupBuddy

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如何在WordPress后台首页添加widget

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