Merge pull request #22897 from demeritcowboy/customview

dev/core#3104 - Crash when viewing a contact page - Call to undefined method CRM_Contact_Page_View_Summary::addExpectedSmartyVariables()

CRM/Core/Page.php

@@ -519,4 +519,25 @@ public static function crmIcon($icon, $text = NULL, $condition = TRUE, $attribs
     return "<i$attribString></i>$sr";
   }
 
+  /**
+   * Add an expected smarty variable to the array.
+   *
+   * @param string $elementName
+   */
+  public function addExpectedSmartyVariable(string $elementName): void {
+    $this->expectedSmartyVariables[] = $elementName;
+  }
+
+  /**
+   * Add an expected smarty variable to the array.
+   *
+   * @param array $elementNames
+   */
+  public function addExpectedSmartyVariables(array $elementNames): void {
+    foreach ($elementNames as $elementName) {
+      // Duplicates don't actually matter....
+      $this->addExpectedSmartyVariable($elementName);
+    }
+  }
+
 }