Wordpress 自定义元框多张图片上传
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【中文标题】Wordpress 自定义元框多张图片上传【英文标题】：Wordpress custom meta box multiple image upload 【发布时间】：2016-08-25 23:08:07 【问题描述】：我正在使用添加了自定义元框的自定义帖子类型。在自定义元框中，我正在尝试为多个图像添加媒体上传器。使用这个上传器，我想将多个图像 ID 存储在一个数组中。问题是我只能保存一个 ID，即使我选择了多个图像。
我真的希望有人可以帮助我。
我的 JS：
jQuery(document).ready(function()
var addButton = document.getElementById('last-opp-bilde');
var deleteButton = document.getElementById('fjern-bilde');
var img = document.getElementById('image-tag');
var hidden = document.getElementById('img-hidden-field');
var imageUploader = wp.media(
title: 'Velg bilde',
button:
text: 'Bruk dette bildet'
,
multiple: true
);
addButton.addEventListener( 'click', function()
if (imageUploader)
imageUploader.open();
);
imageUploader.on( 'select', function()
var attachment = imageUploader.state().get('selection').first().toJSON();
img.setAttribute( 'src', attachment.url);
img.setAttribute( 'style', 'width: 50%;');
hidden.setAttribute( 'value', JSON.stringify( [ id: attachment.id, url: attachment.url]));
);
deleteButton.addEventListener( 'click', function()
img.removeAttribute( 'src' );
hidden.removeAttribute( 'value' );
img.removeAttribute( 'style' );
);
window.addEventListener( 'DOMContentLoaded', function()
img.setAttribute( 'src', imageUploads.imageData.src);
img.setAttribute( 'style', 'width: 50%;');
hidden.setAttribute('value', JSON.stringify( [imageUploads.imageData]));
);
);
【问题讨论】：
【参考方案1】：我实际上设法解决了这个问题。这是为我完成这项工作的 JS。
jQuery(document).ready(function()
var addButton = document.getElementById('last-opp-bilde');
//var deleteButton = document.getElementById('fjern-bilde');
var img = document.getElementById('image-tag');
var hidden = document.getElementById('img-hidden-field');
var imageUploader = wp.media(
title: 'Velg bilde',
button:
text: 'Velg bilde(r)'
,
multiple: 'add'
);
addButton.addEventListener( 'click', function()
if (imageUploader)
imageUploader.open();
);
imageUploader.on('open',function()
var selection = imageUploader.state().get('selection');
ids = jQuery('#img-hidden-field-selected').val().split(',');
ids.forEach(function(id)
attachment = wp.media.attachment(id);
attachment.fetch();
selection.add( attachment ? [ attachment ] : [] );
);
);
imageUploader.on( 'close', function()
//var attachment = imageUploader.state().get('selection').first().toJSON();
var attachment = imageUploader.state().get('selection');
var ids = attachment.map( function (attachment)
return attachment.id;
);
hidden.setAttribute( 'value', ids.join(',') );
);
imageUploader.on( 'select', function()
//var attachment = imageUploader.state().get('selection').first().toJSON();
var attachment = imageUploader.state().get('selection');
var ids = attachment.map( function (attachment)
return attachment.id;
);
hidden.setAttribute( 'value', ids.join(',') );
);
);
【讨论】：
【参考方案2】：将以下代码添加到您当前的主题 function.php 文件中。从 WordPress 管理员转到您的页面，并检查是否将多个图像上传自定义字段添加到每个页面。
<?php
// Add Meta Box to post
add_action( 'add_meta_boxes', 'multi_media_uploader_meta_box' );
function multi_media_uploader_meta_box()
add_meta_box( 'my-post-box', 'Media Field', 'multi_media_uploader_meta_box_func', 'post', 'normal', 'high' );
function multi_media_uploader_meta_box_func($post)
$banner_img = get_post_meta($post->ID,'post_banner_img',true);
?>
<style type="text/css">
.multi-upload-medias ul li .delete-img position: absolute; right: 3px; top: 2px; background: aliceblue; border-radius: 50%; cursor: pointer; font-size: 14px; line-height: 20px; color: red;
.multi-upload-medias ul li width: 120px; display: inline-block; vertical-align: middle; margin: 5px; position: relative;
.multi-upload-medias ul li img width: 100%;
</style>
<table cellspacing="10" cellpadding="10">
<tr>
<td>Banner Image</td>
<td>
<?php echo multi_media_uploader_field( 'post_banner_img', $banner_img ); ?>
</td>
</tr>
</table>
<script type="text/javascript">
jQuery(function($)
$('body').on('click', '.wc_multi_upload_image_button', function(e)
e.preventDefault();
var button = $(this),
custom_uploader = wp.media(
title: 'Insert image',
button: text: 'Use this image' ,
multiple: true
).on('select', function()
var attech_ids = '';
attachments
var attachments = custom_uploader.state().get('selection'),
attachment_ids = new Array(),
i = 0;
attachments.each(function(attachment)
attachment_ids[i] = attachment['id'];
attech_ids += ',' + attachment['id'];
if (attachment.attributes.type == 'image')
$(button).siblings('ul').append('<li data-attechment-id="' + attachment['id'] + '"><a href="' + attachment.attributes.url + '" target="_blank"><img class="true_pre_image" src="' + attachment.attributes.url + '" /></a><i class=" dashicons dashicons-no delete-img"></i></li>');
else
$(button).siblings('ul').append('<li data-attechment-id="' + attachment['id'] + '"><a href="' + attachment.attributes.url + '" target="_blank"><img class="true_pre_image" src="' + attachment.attributes.icon + '" /></a><i class=" dashicons dashicons-no delete-img"></i></li>');
i++;
);
var ids = $(button).siblings('.attechments-ids').attr('value');
if (ids)
var ids = ids + attech_ids;
$(button).siblings('.attechments-ids').attr('value', ids);
else
$(button).siblings('.attechments-ids').attr('value', attachment_ids);
$(button).siblings('.wc_multi_remove_image_button').show();
)
.open();
);
$('body').on('click', '.wc_multi_remove_image_button', function()
$(this).hide().prev().val('').prev().addClass('button').html('Add Media');
$(this).parent().find('ul').empty();
return false;
);
);
jQuery(document).ready(function()
jQuery(document).on('click', '.multi-upload-medias ul li i.delete-img', function()
var ids = [];
var this_c = jQuery(this);
jQuery(this).parent().remove();
jQuery('.multi-upload-medias ul li').each(function()
ids.push(jQuery(this).attr('data-attechment-id'));
);
jQuery('.multi-upload-medias').find('input[type="hidden"]').attr('value', ids);
);
)
</script>
<?php
function multi_media_uploader_field($name, $value = '')
$image = '">Add Media';
$image_str = '';
$image_size = 'full';
$display = 'none';
$value = explode(',', $value);
if (!empty($value))
foreach ($value as $values)
if ($image_attributes = wp_get_attachment_image_src($values, $image_size))
$image_str .= '<li data-attechment-id=' . $values . '><a href="' . $image_attributes[0] . '" target="_blank"><img src="' . $image_attributes[0] . '" /></a><i class="dashicons dashicons-no delete-img"></i></li>';
if($image_str)
$display = 'inline-block';
return '<div class="multi-upload-medias"><ul>' . $image_str . '</ul><a href="#" class="wc_multi_upload_image_button button' . $image . '</a><input type="hidden" class="attechments-ids ' . $name . '" name="' . $name . '" id="' . $name . '" value="' . esc_attr(implode(',', $value)) . '" /><a href="#" class="wc_multi_remove_image_button button" style="display:inline-block;display:' . $display . '">Remove media</a></div>';
// Save Meta Box values.
add_action( 'save_post', 'wc_meta_box_save' );
function wc_meta_box_save( $post_id )
if( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
return;
if( !current_user_can( 'edit_post' ) )
return;
if( isset( $_POST['post_banner_img'] ) )
update_post_meta( $post_id, 'post_banner_img', $_POST['post_banner_img'] );
?>
使用下面的代码从任何地方显示元框值
<?php
// Use below code to show metabox values from anywhere
$id = get_the_ID();
$banner_img = get_post_meta($id, 'post_banner_img', true);
$banner_img = explode(',', $banner_img);
if(!empty($banner_img))
?>
<table class="plugin-detail-tabl" cellspacing="0" cellpadding="0">
<tbody>
<?php foreach ($banner_img as $attachment_id) ?>
<tr>
<td><img src="<?php echo wp_get_attachment_url( $attachment_id );?>"></td>
</tr>
<?php ?>
</tbody>
</table>
<?php
【讨论】：
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