Create gw-set-product-category.php (#566)

* Create gw-set-product-category.php

There are several drop down fields. Each subsequent one is filled from the parent by Term_ID using populate anything.
In the feed settings, when using this code, you can not specify in which categories the product will be recorded.

* Update and rename gravity-forms/gw-set-product-category.php to experimental/gw-gfapc-map-multiple-fields-to-taxonomy.php

* Update gw-gfapc-map-multiple-fields-to-taxonomy.php

Co-authored-by: David Smith <[email protected]>

Author: zippa71

experimental/gw-gfapc-map-multiple-fields-to-taxonomy.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * Gravity Wiz // Gravity Forms // Map Multiple Fields w/ Advanced Post Creation
+ * https://gravitywiz.com/
+ *
+ * By default, the Advanced Post Creation add-on does not allow you to map multiple fields to a taxonomy nor does it
+ * allow you to set terms by ID.
+ * 
+ * This snippet allows to specify multiple fields on a form that have been populated with term IDs (we recommend 
+ * [Populate Anything][1] for this) and to set the taxonomy/terms based on those IDs for the generated post.
+ *
+ * [1]: https://gravitywiz.com/documentation/gravity-forms-populate-anything/
+ */
+add_action( 'gform_advancedpostcreation_post_after_creation', function ( $post_id, $feed, $entry, $form ) {
+	
+	// Update "1", "2", "3" to the field IDs that have been populated with terms. Add additional IDs as needed.
+	$term_field_ids = array( 1, 2, 3 );
+
+	// Update "categories" to the name of the taxonomy to which the populated terms belong.
+	$taxonomy = 'categories';
+	
+	$term_ids = array();
+	foreach ( $term_field_ids as $term_field_id ) {
+		$term_ids[] = (int) $entry[ $term_field_id ];
+	}
+	
+	wp_set_object_terms( $post_id, $term_ids, $taxonomy );
+	
+}, 10, 4 );