WordPress插件：ACF Photo Gallery Field

官方简介

A lightweight extension of Advanced Custom Field (ACF) that adds Photo Gallery field to any post/pages on your WordPress website.

• Visually create your Fields
• Add multiple photos and you can also modify title, caption and link to anything
• Assign your fields to multiple edit pages (via custom location rules)
• Easily load data through a simple and friendly API
• Uses the native WordPress custom post type for ease of use and fast processing
• Uses the native WordPress metadata for ease of use and fast processing
• Supports Elementor
• RESTFul API

Note

This plugin is alternative of ACF Gallery Pro. You need to have knowledge of coding because you’ll be required to edit your WordPress theme source code. If you are looking for shortcodes and prebuilt gallery then this plugin is NOT for you. This plugin will give you PHP array of images and you’ll need to make the gallery layout as you wish.

Usage

acf_photo_gallery is a helper function that takes in ACF_FIELD_NAME and POST_ID will query the database and compile the images for you. The output of this function will be an array.

acf_photo_gallery(ACF_FIELD_NAME, POST_ID);

Example

The following example is using Twitter Bootstrap framework to layout. You can use any framework of your choice.

<?php
    //Get the images ids from the post_metadata
    $images = acf_photo_gallery('vacation_photos', $post->ID);
    //Check if return array has anything in it
    if( count($images) ):
        //Cool, we got some data so now let's loop over it
        foreach($images as $image):
            $id = $image['id']; // The attachment id of the media
            $title = $image['title']; //The title
            $caption= $image['caption']; //The caption
            $full_image_url= $image['full_image_url']; //Full size image url
            $full_image_url = acf_photo_gallery_resize_image($full_image_url, 262, 160); //Resized size to 262px width by 160px height image url
            $thumbnail_image_url= $image['thumbnail_image_url']; //Get the thumbnail size image url 150px by 150px
            $url= $image['url']; //Goto any link when clicked
            $target= $image['target']; //Open normal or new tab
            $alt = get_field('photo_gallery_alt', $id); //Get the alt which is a extra field (See below how to add extra fields)
            $class = get_field('photo_gallery_class', $id); //Get the class which is a extra field (See below how to add extra fields)
?>
<div class="col-xs-6 col-md-3">
    <div class="thumbnail">
        <?php if( !empty($url) ){ ?><a href="<?php echo $url; ?>" <?php echo ($target == 'true' )? 'target="_blank"': ''; ?>><?php } ?>
            <img src="<?php echo $full_image_url; ?>" alt="<?php echo $title; ?>" title="<?php echo $title; ?>">
        <?php if( !empty($url) ){ ?></a><?php } ?>
    </div>
</div>
<?php endforeach; endif; ?>

Add Extra Fields

To add extra fields add the following to your themes functions.php file.

//Create extra fields called Altnative Text and Status
function my_extra_gallery_fields( $args, $attachment_id, $field ){
    $args['alt'] = array(
        'type' => 'text', 
        'label' => 'Altnative Text', 
        'name' => 'alt', 
        'value' => get_field($field . '_alt', $attachment_id)
    );
    $args['status'] = array(
        'type' => 'select', 
        'label' => 'Status', 
        'name' => 'status', 
        'value' => array(
            array(
                '1' => 'Active',
                 '2' => 'Inactive'
            ), 
            get_field($field . '_status', $attachment_id)
        )
    );
    return $args;
}
add_filter( 'acf_photo_gallery_image_fields', 'my_extra_gallery_fields', 10, 3 );

Supported field types:
* text, date, color, datetime-local, email, number, tel, time, url, week, range, checkbox, radio, textarea, select

How to get values of extra fields

You can use ACF helper function get_field

get_field('photo_gallery_alt', $id);
get_field('photo_gallery_class', $id);

Pull caption from attachment caption field

By default the caption is being pulled from description field. Add the following filter to your function.php to pull the caption from attachment caption field.

add_filter( 'acf_photo_gallery_caption_from_attachment', '__return_true' );

REST API

Send HTTP Request to URL to get JSON response of all posts

http://{domain}/wp-json/wp/v2/{POST_TYPE}/

Send HTTP Request to URL to get JSON response of specific post

http://{domain}/wp-json/wp/v2/{POST_TYPE}/{POST_ID}/

When you receive the response, see the ACF item which contains ACF photo gallery name and array of images.

Compatibility

This ACF field type is compatible with:
* ACF 4
* ACF 5
* ACF 6

Issues

Just like any other WordPress plugin, this plugin can also cause issues with other themes and plugins. If you are facing issues making this plugin work on your WordPress site, please do ask for help in the support forum. This way we can help you out and prevent this issue from happening to someone else. If you want to talk to me directly, you can contact me via my website http://www.navz.me/