WDS Blog Post: CMB2 WordPress Plugin: What is it good for? Absolutely everything

Hello Michael
first i would like to thank you for your plugin

i have a problem , i can’t display repeatable fields

here is the repeatable fields group

=================================================

/**
	 * Repeatable Field Groups
	 */
	$meta_boxes['field_group'] = array(
		'id'           => 'field_group',
		'title'        => __( 'Repeating Field Group', 'cmb2' ),
		'object_types' => array( 'post', ),
		'fields'       => array(
			array(
				'id'          => $prefix . 'repeat_group',
				'type'        => 'group',
				'description' => __( 'Generates reusable form entries', 'cmb2' ),
				'options'     => array(
					'group_title'   => __( 'Entry {#}', 'cmb2' ), // {#} gets replaced by row number
					'add_button'    => __( 'Add Another Entry', 'cmb2' ),
					'remove_button' => __( 'Remove Entry', 'cmb2' ),
					'sortable'      => true, // beta
				),
				// Fields array works the same, except id's only need to be unique for this group. Prefix is not needed.
				'fields'      => array(
					array(
						'name' => 'Entry Title',
						'id'   => 'title',
						'type' => 'text',
						// 'repeatable' => true, // Repeatable fields are supported w/in repeatable groups (for most types)
					),
					array(
						'name' => 'Description',
						'description' => 'Write a short description for this entry',
						'id'   => 'description',
						'type' => 'textarea_small',
					),
					array(
						'name' => 'Entry Image',
						'id'   => 'image',
						'type' => 'file',
					),
					array(
						'name' => 'Image Caption',
						'id'   => 'image_caption',
						'type' => 'text',
					),
				),
			),
		),
	);

can i tell me how to display this code in single.php

You have to use this code in your template file

<?php
$entries = get_post_meta( get_the_ID(), $prefix . 'repeat_group', true );

foreach ( (array) $entries as $key => $entry ) {

    $img = $title = $desc = $caption = '';

    if ( isset( $entry['title'] ) )
        $title = esc_html( $entry['title'] );

    if ( isset( $entry['description'] ) )
        $desc = wpautop( $entry['description'] );

    if ( isset( $entry['image_id'] ) ) {
        $img = wp_get_attachment_image( $entry['image_id'], 'share-pick', null, array(
            'class' => 'thumb',
        ) );
    }
    $caption = isset( $entry['image_caption'] ) ? wpautop( $entry['image_caption'] ) : '';

    // Do something with the data
}
?>

Then, you should print all the variables according how you want to display them in your template file.

For example, after the foreach
place something like this

<div class="metabox">
				          	<?php echo $img; ?>
				          	<h3><?php echo $title; ?></h3>
				            <p><?php echo $desc; ?></p>
				            <p><?php echo $caption; ?></p>
</div>
<?php } ?>

Hope this helps