Merge branch '#1047153-fixed-multiple-selection-of-medium-at-commrestriction' into '2020.0'

#1047153 - Fixed multiple selection of a medium for a user at commrestriction.

See merge request xrm/basic!121

entity/CommRestriction_Entity/CommRestriction_Entity.aod

@@ -66,6 +66,10 @@
           <valueProcess>%aditoprj%/entity/CommRestriction_Entity/entityfields/commrestrictionmedium/children/containername_param/valueProcess.js</valueProcess>
           <expose v="false" />
         </entityParameter>
+        <entityParameter>
+          <name>ExcludedKeyIdsSubquery_param</name>
+          <valueProcess>%aditoprj%/entity/CommRestriction_Entity/entityfields/commrestrictionmedium/children/excludedkeyidssubquery_param/valueProcess.js</valueProcess>
+        </entityParameter>
       </children>
     </entityConsumer>
     <entityProvider>

entity/CommRestriction_Entity/entityfields/commrestrictionmedium/children/excludedkeyidssubquery_param/valueProcess.js

+import("system.question");
+import("system.vars");
+import("Sql_lib");
+import("system.result");
+
+var contactId = vars.get("$field.CONTACT_ID");
+var alreadyUsedMediums = new SqlBuilder().select("MEDIUM").from("COMMRESTRICTION").where("COMMRESTRICTION.CONTACT_ID", contactId);
+
+result.string(alreadyUsedMediums);
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