CFM-532_Fix_undefined_coId_in_PagesController_redirects_deliver-show_causing_500s

app/config/routes.php

@@ -198,7 +198,7 @@ function (RouteBuilder $builder) {
     );
 
     /**
-     * Registry allows URLs of the form /coid/name to render as a Mostly Static Page.
+     * Registry allows URLs of the form /coid/pages/name to render as a Mostly Static Page.
      * 
      * Note this will effectively route any URL of the form /registry/x, where x consists of
      * digits, to the Pages controller. We need to filter on digits, or we'll end up taking

app/src/Controller/PagesController.php

@@ -64,6 +64,8 @@ public function deliver(string $coid, string $name) {
         // with PrimaryLink lookups. We render here rather than redirecting into the MSRController to
         // reduce URL bar thrashing.
 
+        $coId = (int)$coid;
+
         // MSRs are only enabled if file uploads are enabled
         $CoSettings = TableRegistry::getTableLocator()->get("CoSettings");
 
@@ -176,6 +178,8 @@ public function show(string $coid, string $name) {
         // redefining it. We render here rather than redirecting into the MSPController to
         // reduce URL bar thrashing.
 
+        $coId = (int)$coid;
+
         $MSPTable = TableRegistry::getTableLocator()->get("MostlyStaticPages");
 
         $msp = $MSPTable->find()