EA > If an event category is changed locally, don't import the category anymore.

ea-advanced-category-management.php

<?php
/**
 * When importing from Other URL with Event Aggregator, only import/update the event
 * category, if it hasn't been changed on the destination site yet.
 *
 * Usage: Add the snippet with a plugin like Code Snippets, or to the functions.php file.
 *
 * @author: Andras Guseo
 *
 * Plugins required: The Events Calendar, Event Aggregator
 *
 * @since November 29, 2024 Initial version.
 */

/**
 * Set a meta to record the manual term change.
 */
add_action( 'set_object_terms', function( int $object_id, array $terms, array $tt_ids, string $taxonomy, bool $append, array $old_tt_ids ) {
	// Bail, if not event.
	if ( get_post_type( $object_id ) != 'tribe_events' ) {
		return;
	}

	// Bail, if it's not about event categories.
	if ( $taxonomy != 'tribe_events_cat') {
		return;
	}

	// Bail, if it's an import.
	if ( tribe_get_request_var( 'action' ) === 'tribe_queue_ea_import_events' ) {
		return;
	}

	// If it's an inline-save or editpost...
	if (
		(
			tribe_get_request_var( 'action' ) === 'inline-save'
			|| tribe_get_request_var( 'action' ) === 'editpost'
		)
		// ...and there was a change in terms.
		&& $old_tt_ids != $tt_ids
	) {
		update_post_meta( $object_id, '_TermChanged', 1 );
	}
}, 10, 6 );

// Remove categories from being imported. We'll do this later.
add_filter( 'tribe_aggregator_before_save_event', function( $event, $data ) {
	$event['categories_source'] = $event['categories'];
	unset( $event['categories'] );

	return $event;
}, 10, 2 );

/**
 * Maybe resave category if changed on import source.
 * 
 * @param array  $event  Which Event data was sent.
 * @param array  $item   Raw version of the data sent from EA.
 * @param object $data   The record we are dealing with.
 */
add_action( 'tribe_aggregator_after_insert_post', function( $event, $item, $data ) {
	// Bail, if terms for the event have changed on the destination site.
	$term_changed = get_post_meta( $event['ID'], '_TermChanged', true );
	if ( $term_changed ) {
		return;
	}

	// Remove all existing terms.
	wp_delete_object_term_relationships( $event['ID'], Tribe__Events__Main::TAXONOMY );

	// Set up empty terms array.
	$terms = [];

	// Check if there are any terms to be imported.
	if ( ! empty( $event['categories_source'] ) ) {
		// Walk through each term.
		foreach ( $event['categories_source'] as $cat ) {
			// Check if terms already exist. If not, create them.
			if ( ! $term = term_exists( $cat, Tribe__Events__Main::TAXONOMY ) ) {
				$term = wp_insert_term( $cat, Tribe__Events__Main::TAXONOMY );
				if ( ! is_wp_error( $term ) ) {
					$terms[] = (int) $term['term_id'];
				}
			} else {
				$terms[] = (int) $term['term_id'];
			}
		}
	}

	// Normalize the list of terms.
	$normalized_categories = tribe_normalize_terms_list( $terms, Tribe__Events__Main::TAXONOMY );

	// Save the terms.
	wp_set_object_terms( $event['ID'], $normalized_categories, Tribe__Events__Main::TAXONOMY, false );
}, 10, 3 );