gpnf-child-entry-id-modifier.php: Added new snippet to include child entry ID in {all_fields} and Nested Form field merge tag output when the :gpnf_child_entry_id modifier is applied.

Author: spivurno

gp-nested-forms/gpnf-child-entry-id-modifier.php

@@ -0,0 +1,38 @@
+<?php
+/**
+ * Gravity Perks // Nested Forms // Display Child Entry ID in Merge Tag Output
+ * https://gravitywiz.com/documentation/gravity-forms-nested-forms/
+ *
+ * Instructions
+ *
+ * 1. Add the `:gpnf_child_entry_id` modifier to any {all_fields} or Nested Form field merge tag.
+ *
+ * Result
+ *
+ * ![Screenshot of {all_fields} and Nested Form field merge tag output with modifier applied.](https://gwiz.io/3DqJjYa)
+ */
+add_filter( 'gpnf_all_entries_nested_entry_markup', function( $markup, $field, $nested_form, $entry, $args ) {
+
+	$modifiers = rgar( $args, 'modifiers' );
+	if ( strpos( $modifiers, 'gpnf_child_entry_id' ) === false ) {
+		return $markup;
+	}
+
+	$dom = new DOMDocument();
+	$dom->loadHTML( $markup );
+
+	$first_row  = $dom->getElementsByTagName( 'tr' )->item( 1 );
+	$header_row = clone $first_row;
+	$value_row  = clone $dom->getElementsByTagName( 'tr' )->item( 2 );
+
+	$header_row->getElementsByTagName( 'strong' )->item( 0 )->nodeValue = 'Entry ID';
+	$value_row->getElementsByTagName( 'font' )->item( 0 )->nodeValue    = $entry['id'];
+
+	$table = $dom->getElementsByTagName( 'table' )->item( 1 );
+	$table->insertBefore( $header_row, $first_row );
+	$table->insertBefore( $value_row, $first_row );
+
+	$markup = $dom->saveHTML();
+
+	return $markup;
+}, 10, 5 );