validation on condition

CRM/CivirulesConditions/AgeComparison.php

@@ -50,4 +50,13 @@ class CRM_CivirulesConditions_AgeComparison extends CRM_CivirulesConditions_Gene
     return ts($label, array(1 => $this->getComparisonValue()));
   }
 
+  /**
+   * Returns an array with required entity names
+   *
+   * @return array
+   */
+  public function requiredEntities() {
+    return array('contact');
+  }
+
 }
\ No newline at end of file

CRM/CivirulesConditions/Generic/FieldChanged.php

@@ -87,4 +87,13 @@ abstract class CRM_CivirulesConditions_Generic_FieldChanged extends CRM_Civirule
     }
     return null;
   }
+
+  /**
+   * Returns an array with required entity names
+   *
+   * @return array
+   */
+  public function requiredEntities() {
+    return array($this->getEntity());
+  }
 }
\ No newline at end of file

CRM/CivirulesConditions/PrimaryEmailChanged.php

@@ -19,6 +19,7 @@ class CRM_CivirulesConditions_PrimaryEmailChanged extends CRM_CivirulesCondition
     return 'email';
   }
 
+
   public function isConditionValid(CRM_Civirules_EventData_EventData $eventData) {
     $isValid = parent::isConditionValid($eventData);
     if ($isValid) {