Create gpnf-sort-child-entries-by-field-value.php

Author: spivurno

gp-nested-forms/gpnf-sort-child-entries-by-field-value.php

@@ -0,0 +1,32 @@
+<?php
+/**
+ * Gravity Perks // Nested Forms // Sort Child Entries by Field Value
+ * https://gravitywiz.com/documentation/gravity-forms-nested-forms/
+ *
+ * Sort child entries by a field value (e.g. name, number, date, etc).
+ *
+ * Warning: This does not work for child entries being displayed inside a Nested Form field on the parent form.
+ * Currently, this is limited to the Nested Entries Simple template but can be easily extended to support other
+ * post-submission templates. Let us know what you need!
+ */
+// Update "123 to your parent form ID and "4" to your Nested Form field ID.
+add_filter( 'gpnf_template_args_123_4', function( $args ) {
+	// Update "5" to the ID of the child field by which you would like to sort.
+	$field_id = 5;
+	$order    = 'asc'; // 'asc' or 'desc'
+	if ( $args['template'] === 'nested-entries-detail-simple' && $args['field']->is_gravityview() ) {
+		usort( $args['entries'], function( $a, $b ) use ( $field_id, $order ) {
+			$first  = rgar( $a, $field_id );
+			$second = rgar( $b, $field_id );
+			if ( $first == $second ) {
+				return 0;
+			}
+			if ( $order === 'asc' ) {
+				return ( $first < $second ) ? -1 : 1;
+			} else {
+				return ( $first > $second ) ? -1 : 1;
+			}
+		} );
+	}
+	return $args;
+} );