JetEngine Relations. Add custom fields into create new item popup. Add custom columns into related item table

jet-engine-advanced-relations.php

<?php
/**
 * Adds custom fields into the insert new related item popup.
 
 * Hook name - jet-engine/relations/types/posts/create-fields - depends on type of created item,
 * for CPT it will be - jet-engine/relations/types/posts/create-fields
 * for terms - jet-engine/relations/types/terms/create-fields
 * for users - jet-engine/relations/types/mix/create-fields/users
 *
 * just replace 'jobs' in the example with your actual post type/taxonomy slug
 * for users you can completely remove thic condition and just set up the fields
 */
add_filter( 'jet-engine/relations/types/posts/create-fields', function( $fields, $post_type ) {

	if ( 'jobs' === $post_type ) {

		$fields[] = array(
			'name'  => 'salary',
			'title' => __( 'Salary', 'jet-engine' ),
			'type'  => 'text',
		);

		$fields[] = array(
			'name'    => 'job_type',
			'title'   => __( 'Type', 'jet-engine' ),
			'type'    => 'select',
			'options' => array(
				array(
					'value' => '',
					'label' => 'Select...',
				),
				array(
					'value' => 'Remote',
					'label' => 'Remote',
				),
				array(
					'value' => 'In Office',
					'label' => 'In Office',
				),
			),
		);

	}

	return $fields;

}, 10, 2 );

/**
 * Allow to store previously added custom fields in the any way you want.
 *
 * Hook name depends on the processed items type
 * jet-engine/relations/types/posts/on-create - for CPT
 * jet-engine/relations/types/terms/on-create - for terms
 * jet-engine/relations/types/mix/on-create/users -for users
 *
 * Just replace jobs with reauired CPT/taxonomy slug, or completely remove this condition for the users.
 * Than you can update required field by input, stored in the $data variable
 *
 * 
 */
add_action( 'jet-engine/relations/types/posts/on-create', function( $post_id, $data, $post_type ) {

	if ( 'jobs' !== $post_type ) {
		return;
	}

	if ( $post_id && ! empty( $data['salary'] ) ) {
		update_post_meta( $post_id, 'salary', absint( $data['salary'] ) );
	}

	if ( $post_id && ! empty( $data['job_type'] ) ) {
		update_post_meta( $post_id, 'job_type', $data['job_type'] );
	}

}, 10, 3 );

/**
 * Here you can add custom columns to the related items table.
 * First of all you need to find your relation ID and use it as part of hook name.
 * ID you can find in the address bar of the edit realtion page - https://prnt.sc/24tk842
 *
 * Than add this ID into the end of hook name - jet-engine/relations/init/22, where 22 - is relation ID
 *
 * Than you can use $relation->add_table_column() method inside table hook callback to add new columns.
 * Example:
 * $relation->add_table_column( 
 * 	'child_object', - 'child_object' - is columns for the children items table, 'parent_object' - for the parent related items table.
 * 	'salary', - key of the column
 * 	'Salary', - title of the column
 * 	function( $post_id ) {

 * 		$price = get_post_meta( $post_id, 'salary', true );

 * 		if ( $price ) {
 * 			return '$' . $price;
 * 		} else {
 * 			return 'Not set';
 * 		}

 * 	} );
 *
 * Last parameter is a callback to show column content. It accepts item ID as an argument. By this item ID you can get any data about this item
 */
add_action( 'jet-engine/relations/init/22', function( $relation ) {

	$relation->add_table_column( 'child_object', 'salary', 'Salary', function( $post_id ) {

		$price = get_post_meta( $post_id, 'salary', true );

		if ( $price ) {
			return '$' . $price;
		} else {
			return 'Not set';
		}

	} );

	$relation->add_table_column( 'child_object', 'job_type', 'Type', function( $post_id ) {

		$job_type = get_post_meta( $post_id, 'job_type', true );

		if ( $job_type ) {
			return $job_type;
		} else {
			return '--';
		}

	} );

} );