Meta box image field size

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I’m using Custom metaboxes and fields for WordPress and I have added image field.

At the frontend I can print image, but I’m not able to add apply image size for it.

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In my module I have set CMB field: 

array(
    'name' => __('Image', 'cmb'),
    'desc' => __('Upload an image or enter a URL.', 'cmb'),
    'id' => $prefix.
    'image',
    'type' => 'file',
    'allow' => array('url', 'attachment'),
),

For testing in single.php file I have: 

global $post;
$image = get_post_meta($post->ID, "_cmb_image", true);

This works for printing image in full size: 

<img src="<?php echo $image; ?>" alt="" />

I have tried different ways to print image in certain size which is set in theme functions.php.

For example tried this: 

<?php echo wp_get_attachment_image( get_post_meta( get_the_id(), '_cmb_image', true ), 'thumbnail', false, array( 'class' => 'vert-align-mid' ) ); ?>

And this: 

<?php echo wp_get_attachment_image( $image, 'thumbnail' ); ?>

This aren’t working and I’m getting empty value. Any help how to print image in custom size?

Post Views: 1

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2 comments

  1. I found solution for this. CMB field type will store ID also. It is stored: $id . '_id'. So in my case it will be _cmb_image_id.

    Add these to template file.

    <?php image = wp_get_attachment_image( get_post_meta( get_the_ID(), '_cmb_image_id', 1 ), 'thumbnail' ); ?>

    After this echo image:

    <?php echo $image; ?>

  2. From this code you are getting image object : 

    $image = get_post_meta($post->ID, "_cmb_image", true);

    Now retrieve the image ID from this object and pass to below function :

    $image->ID is only an example , it must be what you are getting in that object.

    wp_get_attachment_image ( int $image->ID, string|array $size = 'thumbnail', bool $icon = false, string|array $attr = '' )

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