update add primary email changed condition

CRM/Civirules/BAO/Condition.php

@@ -150,7 +150,7 @@ class CRM_Civirules_BAO_Condition extends CRM_Civirules_DAO_Condition {
       return false;
     }
 
-    $className = $condition->className;
+    $className = $condition->class_name;
     if (!class_exists($className)) {
       if ($abort) {
 

CRM/Civirules/BAO/Rule.php

@@ -164,9 +164,10 @@ class CRM_Civirules_BAO_Rule extends CRM_Civirules_DAO_Rule {
     $sql = "SELECT r.id AS rule_id, e.id AS event_id
             FROM `civirule_rule` r
             INNER JOIN `civirule_event` e ON r.event_id = e.id AND e.is_active = 1
-            WHERE r.`is_active` = 1 AND e.class_name IS NULL AND e.entity = %1 AND e.action = %2";
+            WHERE r.`is_active` = 1 AND (e.class_name IS NULL OR e.class_name = '') AND e.entity = %1 AND e.action = %2";
     $params[1] = array($entity, 'String');
     $params[2] = array($action, 'String');
+
     $dao = CRM_Core_DAO::executeQuery($sql, $params);
     while ($dao->fetch()) {
       $rule_data = array(

CRM/CivirulesConditions/PrimaryEmailChanged.php

+<?php
+
+class CRM_CivirulesConditions_PrimaryEmailChanged extends CRM_CivirulesConditions_Generic_FieldChanged {
+
+  /**
+   * Returns name of entity
+   *
+   * @return string
+   */
+  protected function getEntity() {
+    return 'Email';
+  }
+
+  /**
+   * Returns name of the field
+   * @return string
+   */
+  protected function getField() {
+    return 'email';
+  }
+
+  public function isConditionValid(CRM_Civirules_EventData_EventData $eventData) {
+    $isValid = parent::isConditionValid($eventData);
+    if ($isValid) {
+      $data = $eventData->getEntityData($this->getEntity());
+      if (!empty($data['is_primary'])) {
+        $isValid = true;
+      } else {
+        $isValid = false;
+      }
+    }
+    return $isValid;
+  }
+
+}
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