Merge branch 'm_1083803_emailfilterhandling_filter_mandatory' into '2021.1'

[Projekt: xRM-Marketing][TicketNr.: 1083803][Bounces: Im E-Mail Filter muss...

See merge request xrm/basic!1216

entity/EmailFilterHandling_entity/EmailFilterHandling_entity.aod

@@ -26,6 +26,7 @@
       <title>Filter</title>
       <contentType>FILTER_TREE</contentType>
       <valueProcess>%aditoprj%/entity/EmailFilterHandling_entity/entityfields/filter/valueProcess.js</valueProcess>
+      <onValidation>%aditoprj%/entity/EmailFilterHandling_entity/entityfields/filter/onValidation.js</onValidation>
     </entityField>
     <entityField>
       <name>EMAIL_FILTER_HANDLINGID</name>

entity/EmailFilterHandling_entity/entityfields/filter/onValidation.js

+import("KeywordRegistry_basic");
+import("system.vars");
+import("system.translate");
+import("system.result");
+import("JditoFilter_lib");
+
+if (vars.get("$local.value"))
+{
+    var filter = new FilterConditionGroup(JSON.parse(vars.get("$local.value"))); 
+        
+    if(filter.isEmpty())
+    {
+        result.string(translate.text("Filter can't be empty"));
+    }
+}