From c81566db7e3575b6a35f109ff781a9f83c73c15e Mon Sep 17 00:00:00 2001
From: Ryan Cramer <ryan@processwire.com>
Date: Tue, 3 Dec 2019 09:57:36 -0500
Subject: [PATCH] Fix issue processwire/processwire-issues#1040

---
 .../InputfieldPageAutocomplete.module                       | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/wire/modules/Inputfield/InputfieldPageAutocomplete/InputfieldPageAutocomplete.module b/wire/modules/Inputfield/InputfieldPageAutocomplete/InputfieldPageAutocomplete.module
index ff0acf57..d6172a1f 100644
--- a/wire/modules/Inputfield/InputfieldPageAutocomplete/InputfieldPageAutocomplete.module
+++ b/wire/modules/Inputfield/InputfieldPageAutocomplete/InputfieldPageAutocomplete.module
@@ -284,6 +284,7 @@ _OUT;
 	 */
 	protected function getAjaxUrl() {
 
+		$pipe = '%7C'; // encoded pipe "|"
 		$selector = $this->findPagesSelector; 	
 
 		if($this->parent_id) {
@@ -297,7 +298,7 @@ _OUT;
 		}
 
 		if(count($this->template_ids)) {
-			$selector .= ",templates_id=" . implode('|', $this->template_ids);
+			$selector .= ",templates_id=" . implode($pipe, $this->template_ids);
 		} else if($this->template_id) {
 			$selector .= ",templates_id={$this->template_id}";
 		}
@@ -332,6 +333,9 @@ _OUT;
 			$selector .= "&format_name=$name";
 		}
 		$selector .= "&get=" . $this->labelFieldName;
+
+		// replace any pipes with encoded version
+		if(strpos($selector, '|') !== false) $selector = str_replace('|', $pipe, $selector);
 		
 		return $this->config->urls->admin . "page/search/for?" . $selector;
 	}