OO-1866: make unique ids for the toggle panel

src/main/java/org/olat/portfolio/ui/structel/edit/EPCollectRestrictionResultController.java

@@ -22,6 +22,7 @@ package org.olat.portfolio.ui.structel.edit;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
+import java.util.concurrent.atomic.AtomicLong;
 
 import org.olat.core.CoreSpringFactory;
 import org.olat.core.gui.UserRequest;
@@ -49,11 +50,13 @@ import org.olat.portfolio.ui.filter.PortfolioFilterController;
 public class EPCollectRestrictionResultController extends BasicController {
 	
 	private final VelocityContainer mainVc;
+	private static final AtomicLong restrictionsCounter = new AtomicLong(1l);
 	
 	public EPCollectRestrictionResultController(UserRequest ureq, WindowControl wControl) {
 		super(ureq, wControl);
 
 		mainVc = createVelocityContainer("restrictions_msg");
+		mainVc.contextPut("restrictionId", Long.toString(restrictionsCounter.getAndIncrement()));
 		putInitialPanel(mainVc);
 	}
 

src/main/java/org/olat/portfolio/ui/structel/edit/_content/restrictions_msg.html

 #if($messages)
-<div class="panel-group" id="o_ep_restrictions">
+<div class="panel-group" id="o_ep_restrictions_$restrictionId">
 	<div class="panel #if($restrictionsPassed) panel-success #else panel-warning #end">
     	<div class="panel-heading">
       		<h4 class="panel-title">
-       			 <a data-toggle="collapse" data-parent="#o_ep_restrictions" href="#collapseMessages">$r.translate("collect.restriction")</a>
+       			 <a data-toggle="collapse" data-parent="#o_ep_restrictions_$restrictionId" href="#collapseMessages_$restrictionId">$r.translate("collect.restriction")</a>
       		</h4>
     	</div>
-		<div id="collapseMessages" class="panel-collapse collapse">
+		<div id="collapseMessages_$restrictionId" class="panel-collapse collapse">
 			<div class="panel-body">
 			#foreach($message in $messages)
 				<p>$message</p>