gpnf-gflow-auto-attach-child-entries.php: Added snippet to Auto-attach Child Entries to Parent when Editing via Gravity Flow.

gp-nested-forms/gpnf-gflow-auto-attach-child-entries.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Gravity Perks // Nested Forms // Auto-attach Child Entries to Parent when Editing via Gravity Flow.
+ * https://gravitywiz.com/documentation/gravity-forms-nested-forms/
+ *
+ * By default, when adding a new child entry to a Nested Form field while editing a parent entry via Gravity Flow, the
+ * child entry is saved to the session and will not be attached to the parent entry unless you click "Submit" on the
+ * workflow.
+ *
+ * Use this snippet to automatically attach the child entry to the parent as soon as the child form is submitted.
+ */
+add_filter( 'gpnf_set_parent_entry_id', function( $parent_entry_id ) {
+	if ( ! $parent_entry_id && is_callable( 'gravity_flow' ) && gravity_flow()->is_workflow_detail_page() ) {
+		$parent_entry_id = rgget( 'lid' );
+	}
+	return $parent_entry_id;
+} );