使用WPAlchemy元变量将日期和时间输入数据组合到一个字段中

时间:2011-03-26 10:45:04

标签: meta-boxes

我正在尝试将我正在使用的日期和时间的元数据转换为WPAlchemy元数据集。

我目前正在保存时将开始日期和开始时间合并到一个字段中。

这是旧的保存功能:

add_action ('save_post', 'save_event');

function save_event(){

    global $post;

    // - still require nonce

    if ( !wp_verify_nonce( $_POST['event-nonce'], 'event-nonce' )) {
        return $post->ID;
    }

    if ( !current_user_can( 'edit_post', $post->ID ))
        return $post->ID;

    // - convert back to unix & update post

    if(!isset($_POST["startdate"])):
        return $post;
        endif;
        $updatestartd = strtotime ( $_POST["startdate"] . $_POST["starttime"] );
        update_post_meta($post->ID, "startdate", $updatestartd );

    if(!isset($_POST["enddate"])):
        return $post;
        endif;
        $updateendd = strtotime ( $_POST["enddate"] . $_POST["endtime"]);
        update_post_meta($post->ID, "enddate", $updateendd );

以下是新功能和参考字段:

$custom_event_metabox = new WPAlchemy_MetaBox(array
(
    'id' => '_custom_event_meta',
    'title' => 'Event Information',
    'template' => /event_meta.php',
    'types' => array('event'),
    'context' => 'normal',
    'priority' => 'high',
    'mode' => WPALCHEMY_MODE_EXTRACT,
    'save_filter' => 'event_save_filter',
    'prefix' => '_my_' // defaults to NULL
));

            <li><label>Start Date</label>
            <?php $mb->the_field('startdate'); ?>
            <input type="text" name="<?php $mb->the_name(); ?>" value="<?php $mb->the_value(); ?>" class="tsadate" />
            </li>

            <li><label>Start Time</label>
            <?php $mb->the_field('starttime'); ?>
            <input type="text" name="<?php $mb->the_name(); ?>" value="<?php $mb->the_value(); ?>" class="tsatime" />
            <span><em>Use 24h format (7pm = 19:00)</em></span>
            </li>

            <li><label>End Date</label>
            <?php $mb->the_field('enddate'); ?>
            <input type="text" name="<?php $mb->the_name(); ?>" value="<?php $mb->the_value(); ?>" class="tsadate" />
            </li>

            <li><label>End Time</label>
            <?php $mb->the_field('endtime'); ?>
            <input type="text" name="<?php $mb->the_name(); ?>" value="<?php $mb->the_value(); ?>" class="tsatime" />
            <span><em>Use 24h format (7pm = 19:00)</em></span>

我面临的问题是我不能完全确定我是否应该使用save_filter或save_action,或者我应该如何处理这个ala WPAlchemy。

这就是我到目前为止:

function event_save_filter($meta, $post_id)
{

    // the meta array which can be minipulated
    var_dump($meta);

    // the current post id
    var_dump($post_id);

    // fix: remove exit, exit here only to show you the output when saving
    //exit;

    // - convert back to unix & update post
    if(!isset($_POST["startdate"])):
return $post;
endif;
$updatestartd = strtotime ( $_POST["startdate"] . $_POST["starttime"] );
update_post_meta($post->ID, "startdate", $updatestartd );

如果(isset($ _ POST [ “结束日期”])!):     返回$ post;     万一;     $ updateendd = strtotime($ _POST [“enddate”]。$ _POST [“endtime”]);     update_post_meta($ post-&gt; ID,“enddate”,$ updateendd);

    // filters must always continue the chain and return the data (passing it through the filter)
    return $meta;

}

这会有用吗?它应该是save_filter还是save_action?

任何有识之士; - )

1 个答案:

答案 0 :(得分:2)

如果您使用的是WPAlchemy,您只需在元数据中添加新值或更新值即可。您可以通过向$meta数组添加其他值来实现此目的。当您使用save_filter时应该始终返回时,WPAlchemy将处理数据的保存。

save_filtersave_action之间的主要区别在于,对于过滤器,您必须传回$meta值,但您可以在执行此操作之前修改数组,这样您就可以保存隐藏的值。

使用上述任何选项的强大之处在于,您可以在更新后以及用户输入的值中操纵WordPress的其他方面。

false中传回save_filter告诉WPAlchemy停止而不是保存。两者之间的另一个区别是save_filter在保存之前发生,save_action之后发生。

以下是我尝试调整上面的代码,显然您必须触摸它以使其适用于您,请阅读我已包含的评论。

function event_save_filter($meta, $post_id)
{
    // the meta array which can be minipulated
    var_dump($meta);

    // the current post id
    var_dump($post_id);

    // fix: remove exit, exit here only to show you the output when saving
    //exit;


    // at this time WPAlchemy does not have any field validation
    // it is best to handle validation with JS prior to form submit
    // If you are going to handle validation here, then you should
    // probably handle it up front before saving anything

    if( ! isset($meta['startdate']) OR ! isset($meta['enddate']))
    {
        // returning false stops WPAlchemy from saving
        return false;
    }

    $updatestartd = strtotime($meta['startdate'] . $meta['starttime']);

    // this is an example of setting an additional meta value
    $meta['startdate_ts'] = $updatestartd;

    // important:
    // you may or may not need the following, at this time, 
    // WPAlchemy saves its data as an array in wp_postmeta,
    // this is good or bad depending on the task at hand, if
    // you need to use query_post() WP function with the "startdate"
    // parameter, your best bet is to set the following meta value
    // outside of the WPAlchemy context.

    update_post_meta($post_id, "startdate", $updatestartd );

    $updateendd = strtotime ($meta['enddate'] . $meta['endtime']); 

    // similar note applies
    update_post_meta($post_id, "enddate", $updateendd );

    // filters must always continue the chain and return the data (passing it through the filter)
    return $meta;

}