在前端保存附件自定义域

时间：2018-06-28 作者：730wavy

我有一个前端帖子表单，允许用户上传多张照片，在那里我有2个输入字段，用于尝试保存每个附件的自定义元数据-

$vid_pix = get_post_meta($v_Id, \'vid_pix\', false);

if (!empty($vid_pix)) {
foreach ($vid_pix as $vP) {
$Pt = get_post_meta($vP, \'photo_time\', true);
$Por = get_post_meta($vP, \'photo_order\', true);

echo \'<img src="\' . wp_get_attachment_thumb_url($vP) . \'" alt=""/>\';
echo \'<input type="hidden" name="photo_order" class="photo_order" value="\'.$Por.\'" />\';
echo \'<input type="text" name="photo_time" class="photo_time" value="\'.$Pt.\'"/>\'; 
}
 }
提交表单时，我尝试使用以下方法保存表单（我注释掉了失败的尝试）-

//$Pt = get_post_meta($v_Id, \'photo_time\', false);
//$Por = get_post_meta($v_Id, \'photo_order\', false);  

// GET ATTACHMENT IDS
if (!empty($vid_pix)) {
foreach ($vid_pix as $vP) {

$post_id = $vP;
$meta = $_POST[\'attachments\'][ $post_id ][\'photo_time\'];
update_post_meta($post_id, \'photo_time\', $meta);
$meta_two = $_POST[\'attachments\'][$post_id][\'photo_order\'];
update_post_meta($post_id, \'photo_order\', $meta_two);

update_post_meta($vP, \'photo_time\', $attachment[\'attachments\'][$vP][\'photo_time\']);
update_post_meta($vP, \'photo_order\', $attachment[\'attachments\'][$vP][\'photo_order\']); 

//$Pt = get_post_meta($v_Id, \'photo_time\', false);
//$Por = get_post_meta($v_Id, \'photo_order\', false);
//$Pt = get_post_meta($vP, \'photo_time\', true);
//$Por = get_post_meta($vP, \'photo_order\', true);

//update_post_meta($vP, \'photo_time\', $Pt);
//update_post_meta($vP, \'photo_order\', $Por);
//update_post_meta($v_Id, \'_photo_time\', $newvidPix);                            
//add_post_meta($v_Id, \'photo_time\', $Pt, false);
然而，我无法让它工作。在函数中使用以下代码。php我可以在后端完成所有工作--

 // ADD FIELDS
        function mytheme_attachment_fields( $fields, $post ) {  
            $meta = get_post_meta($post->ID, \'photo_time\', true);
            $fields[\'photo_time\'] = array(
                \'label\' => \'photo time\',
                \'input\' => \'text\',
                \'value\' => $meta,
                \'show_in_edit\' => true,
            );

            $meta_two = get_post_meta($post->ID, \'photo_order\', true);
            $fields[\'photo_order\'] = array(
                \'label\' => \'photo order\',
                \'input\' => \'text\',
                \'value\' => $meta_two,
                \'show_in_edit\' => true,
            ); 
            return $fields;         
        }
        add_filter( \'attachment_fields_to_edit\', \'mytheme_attachment_fields\', 10, 2 );

        // Update custom field on save
        function mytheme_update_attachment_meta($attachment){
            global $post;
              update_post_meta($post->ID, \'photo_time\', $attachment[\'attachments\'][$post->ID][\'photo_time\']);
              update_post_meta($post->ID, \'photo_order\', $attachment[\'attachments\'][$post->ID][\'photo_order\']);     
            return $attachment;
        }
        add_filter( \'edit_attachment\', \'mytheme_update_attachment_meta\', 4);

         // Update custom field via ajax
        function mytheme_media_xtra_fields() {
            $post_id = $_POST[\'id\'];
            $meta = $_POST[\'attachments\'][$post_id ][\'photo_time\'];
              update_post_meta($post_id , \'photo_time\', $meta);
            $meta_two = $_POST[\'attachments\'][$post_id ][\'photo_order\'];
              update_post_meta($post_id , \'photo_order\', $meta_two);             
            clean_post_cache($post_id);
        }
        add_action(\'wp_ajax_save-attachment-compat\', \'mytheme_media_xtra_fields\', 0, 1);
如何在前端节省开支，有什么想法吗？谢谢

1 个回复
最合适的回答,由SO网友:Sally CJ 整理而成

在后端，您检索的数据如下所示：

$meta = $_POST[\'attachments\'][ $post_id ][\'photo_time\'];
$meta_two = $_POST[\'attachments\'][$post_id][\'photo_order\'];
因此，在前端，您应该设置字段的name 在此格式中：attachments[<?= $vP ?>][KEY] 哪里KEY 可能是photo_order 或photo_time.

echo \'<input type="hidden" name="attachments[<?= $vP ?>][photo_order]" class="photo_order" value="\'.$Por.\'" />\';
echo \'<input type="text" name="attachments[<?= $vP ?>][photo_time]" class="photo_time" value="\'.$Pt.\'"/>\';

UPDATE

保存数据：

检查中的代码UPDATE #2 下文第节

使用该代码代替您（尝试过的）代码&mdash；您的问题中这之后的代码：

提交表单时，我尝试使用以下方法保存表单（我注释掉了失败的尝试）-

UPDATE #2

最好将代码（用于保存数据）包装到函数中，如下所示：

add_action( \'init\', \'my_save_vid_pix_data\' );
function my_save_vid_pix_data() {
    if ( ! isset( $_POST[\'attachments\'], $_POST[\'v_Id\'] ) ) {
        return;
    }

    $atts = (array) $_POST[\'attachments\'];
    $post_id = absint( $_POST[\'v_Id\'] );
    $vid_pix = get_post_meta($post_id, \'vid_pix\', false);

    foreach ((array) $vid_pix as $vP) {
        if ( ! isset( $atts[ $vP ] ) || ! is_array( $atts[ $vP ] ) ) {
            continue;
        }

        update_post_meta($vP, \'photo_time\', $atts[ $vP ][\'photo_time\']);
        update_post_meta($vP, \'photo_order\', $atts[ $vP ][\'photo_order\']);
    }
}
（将该功能添加到主题的functions.php 文件。）

并添加隐藏的input 字段（已命名v_Id) 在此之后foreach 回路：

if (!empty($vid_pix)) {
foreach ($vid_pix as $vP) {
...
echo \'<input type="text" name="attachments[<?= $vP ?>][photo_time]" class="photo_time" value="\'.$Pt.\'"/>\'; 
}

echo \'<input type="hidden" name="v_Id" value="\' . $v_Id . \'">\';
 }
（有关$v_Id 变量。）

结束
标签： custom-field   forms   attachments   post-meta   attachment-fields-to-edit   小码农  

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在前端保存附件自定义域 - 小码农CODE - 行之有效找到问题解决它

在前端保存附件自定义域

时间：2018-06-28 作者：730wavy

我有一个前端帖子表单，允许用户上传多张照片，在那里我有2个输入字段，用于尝试保存每个附件的自定义元数据-

$vid_pix = get_post_meta($v_Id, \'vid_pix\', false);

if (!empty($vid_pix)) {
foreach ($vid_pix as $vP) {
$Pt = get_post_meta($vP, \'photo_time\', true);
$Por = get_post_meta($vP, \'photo_order\', true);

echo \'<img src="\' . wp_get_attachment_thumb_url($vP) . \'" alt=""/>\';
echo \'<input type="hidden" name="photo_order" class="photo_order" value="\'.$Por.\'" />\';
echo \'<input type="text" name="photo_time" class="photo_time" value="\'.$Pt.\'"/>\'; 
}
 }
提交表单时，我尝试使用以下方法保存表单（我注释掉了失败的尝试）-

//$Pt = get_post_meta($v_Id, \'photo_time\', false);
//$Por = get_post_meta($v_Id, \'photo_order\', false);  

// GET ATTACHMENT IDS
if (!empty($vid_pix)) {
foreach ($vid_pix as $vP) {

$post_id = $vP;
$meta = $_POST[\'attachments\'][ $post_id ][\'photo_time\'];
update_post_meta($post_id, \'photo_time\', $meta);
$meta_two = $_POST[\'attachments\'][$post_id][\'photo_order\'];
update_post_meta($post_id, \'photo_order\', $meta_two);

update_post_meta($vP, \'photo_time\', $attachment[\'attachments\'][$vP][\'photo_time\']);
update_post_meta($vP, \'photo_order\', $attachment[\'attachments\'][$vP][\'photo_order\']); 

//$Pt = get_post_meta($v_Id, \'photo_time\', false);
//$Por = get_post_meta($v_Id, \'photo_order\', false);
//$Pt = get_post_meta($vP, \'photo_time\', true);
//$Por = get_post_meta($vP, \'photo_order\', true);

//update_post_meta($vP, \'photo_time\', $Pt);
//update_post_meta($vP, \'photo_order\', $Por);
//update_post_meta($v_Id, \'_photo_time\', $newvidPix);                            
//add_post_meta($v_Id, \'photo_time\', $Pt, false);
然而，我无法让它工作。在函数中使用以下代码。php我可以在后端完成所有工作--

 // ADD FIELDS
        function mytheme_attachment_fields( $fields, $post ) {  
            $meta = get_post_meta($post->ID, \'photo_time\', true);
            $fields[\'photo_time\'] = array(
                \'label\' => \'photo time\',
                \'input\' => \'text\',
                \'value\' => $meta,
                \'show_in_edit\' => true,
            );

            $meta_two = get_post_meta($post->ID, \'photo_order\', true);
            $fields[\'photo_order\'] = array(
                \'label\' => \'photo order\',
                \'input\' => \'text\',
                \'value\' => $meta_two,
                \'show_in_edit\' => true,
            ); 
            return $fields;         
        }
        add_filter( \'attachment_fields_to_edit\', \'mytheme_attachment_fields\', 10, 2 );

        // Update custom field on save
        function mytheme_update_attachment_meta($attachment){
            global $post;
              update_post_meta($post->ID, \'photo_time\', $attachment[\'attachments\'][$post->ID][\'photo_time\']);
              update_post_meta($post->ID, \'photo_order\', $attachment[\'attachments\'][$post->ID][\'photo_order\']);     
            return $attachment;
        }
        add_filter( \'edit_attachment\', \'mytheme_update_attachment_meta\', 4);

         // Update custom field via ajax
        function mytheme_media_xtra_fields() {
            $post_id = $_POST[\'id\'];
            $meta = $_POST[\'attachments\'][$post_id ][\'photo_time\'];
              update_post_meta($post_id , \'photo_time\', $meta);
            $meta_two = $_POST[\'attachments\'][$post_id ][\'photo_order\'];
              update_post_meta($post_id , \'photo_order\', $meta_two);             
            clean_post_cache($post_id);
        }
        add_action(\'wp_ajax_save-attachment-compat\', \'mytheme_media_xtra_fields\', 0, 1);
如何在前端节省开支，有什么想法吗？谢谢

1 个回复
最合适的回答,由SO网友:Sally CJ 整理而成

在后端，您检索的数据如下所示：

$meta = $_POST[\'attachments\'][ $post_id ][\'photo_time\'];
$meta_two = $_POST[\'attachments\'][$post_id][\'photo_order\'];
因此，在前端，您应该设置字段的name 在此格式中：attachments[<?= $vP ?>][KEY] 哪里KEY 可能是photo_order 或photo_time.

echo \'<input type="hidden" name="attachments[<?= $vP ?>][photo_order]" class="photo_order" value="\'.$Por.\'" />\';
echo \'<input type="text" name="attachments[<?= $vP ?>][photo_time]" class="photo_time" value="\'.$Pt.\'"/>\';

UPDATE

保存数据：

检查中的代码UPDATE #2 下文第节

使用该代码代替您（尝试过的）代码&mdash；您的问题中这之后的代码：

提交表单时，我尝试使用以下方法保存表单（我注释掉了失败的尝试）-

UPDATE #2

最好将代码（用于保存数据）包装到函数中，如下所示：

add_action( \'init\', \'my_save_vid_pix_data\' );
function my_save_vid_pix_data() {
    if ( ! isset( $_POST[\'attachments\'], $_POST[\'v_Id\'] ) ) {
        return;
    }

    $atts = (array) $_POST[\'attachments\'];
    $post_id = absint( $_POST[\'v_Id\'] );
    $vid_pix = get_post_meta($post_id, \'vid_pix\', false);

    foreach ((array) $vid_pix as $vP) {
        if ( ! isset( $atts[ $vP ] ) || ! is_array( $atts[ $vP ] ) ) {
            continue;
        }

        update_post_meta($vP, \'photo_time\', $atts[ $vP ][\'photo_time\']);
        update_post_meta($vP, \'photo_order\', $atts[ $vP ][\'photo_order\']);
    }
}
（将该功能添加到主题的functions.php 文件。）

并添加隐藏的input 字段（已命名v_Id) 在此之后foreach 回路：

if (!empty($vid_pix)) {
foreach ($vid_pix as $vP) {
...
echo \'<input type="text" name="attachments[<?= $vP ?>][photo_time]" class="photo_time" value="\'.$Pt.\'"/>\'; 
}

echo \'<input type="hidden" name="v_Id" value="\' . $v_Id . \'">\';
 }
（有关$v_Id 变量。）

标签： custom-field   forms   attachments   post-meta   attachment-fields-to-edit   小码农  

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