Create attribute with microflow in an Entity problem
0
Dear Communities I created attributes with microflow function for an entity in order to get multi-selection results record data in a data grid2 widget of Event_Overview page(it works as show below) however after I did so, when I click the New button in Event_Overview page to open the new Event_NewEdit page for creating a new event, I got the error message, detailed error message as below An error has occurred while handling the request. [User 'Anonymous_cfd7c928-9ae7-4636-a36f-d99baac9f98e' with session id 'fc96bad4-XXXX-XXXX-XXXX-XXXXXXXX3955' and roles 'Administrator'] -------- com.mendix.webui.WebUIException: Exception while executing runtime operation at com.mendix.webui.actions.client.RuntimeOperationAction.$anonfun$apply$1(RuntimeOperationAction.scala:60) Caused by: com.mendix.core.CoreRuntimeException: An error occurred while executing the action 'MyFirstModule.Get_ProductionLine' at com.mendix.basis.objectmanagement.MendixObjectMemberImpl.getValue(MendixObjectMemberImpl.java:220) Caused by: com.mendix.modules.microflowengine.MicroflowException: Failed to evaluate expression, error occurred on line 1, character 1 substring($Variable,0,length($Variable)-1) ^ at MyFirstModule.Get_ProductionLine (CreateOrChangeVariable : 'Change variable Variable') Advanced stacktrace: at com.mendix.languages.mxexpressions.MxExpressionImpl.evaluate(MxExpressionImpl.scala:32) Caused by: com.mendix.languages.expressions.ExpressionException: begin 0, end -1, length 0 at com.mendix.languages.expressions.Expr.evaluate(Expr.scala:16) Caused by: java.lang.StringIndexOutOfBoundsException: begin 0, end -1, length 0 at java.base/java.lang.String.checkBoundsBeginEnd(String.java:3319) at java.base/java.lang.String.substring(String.java:1874) at com.mendix.languages.expressions.StringFunctions$$anonfun$substring$1.applyOrElse(StringFunctions.scala:89) at com.mendix.languages.expressions.StringFunctions$$anonfun$substring$1.applyOrElse(StringFunctions.scala:87) at com.mendix.languages.expressions.FunctionCallExpr.evaluateExpression(FunctionCallExpr.scala:27) at com.mendix.languages.expressions.Expr.evaluate(Expr.scala:13) at com.mendix.languages.mxexpressions.MxExpressionImpl.evaluate(MxExpressionImpl.scala:25) at com.mendix.languages.mxexpressions.MxExpressionImpl.evaluate(MxExpressionImpl.scala:15) at com.mendix.modules.microflowengine.actions.variable.CreateOrChangeVariableAction.$anonfun$execute$2(CreateOrChangeVariableAction.scala:20) at scala.Option.fold(Option.scala:263) at com.mendix.modules.microflowengine.actions.variable.CreateOrChangeVariableAction.execute(CreateOrChangeVariableAction.scala:20) at com.mendix.modules.microflowengine.actions.variable.CreateOrChangeVariableAction.execute(CreateOrChangeVariableAction.scala:10) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.$anonfun$execute$1(MicroflowObject.scala:32) at scala.Option.flatMap(Option.scala:283) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.scala:29) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.$anonfun$executeAfterBreakingIfNecessary$2(MicroflowImpl.scala:167) at scala.Option.flatMap(Option.scala:283) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.scala:167) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.scala:114) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:58) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:48) at com.mendix.core.actionmanagement.internal.InternalCoreAction.call(InternalCoreAction.java:57) at com.mendix.basis.actionmanagement.ActionManager.$anonfun$executeSync$2(ActionManager.scala:106) at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20) at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:105) at com.mendix.basis.actionmanagement.MicroflowCallBuilderImpl.execute(MicroflowCallBuilderImpl.scala:62) at com.mendix.basis.objectmanagement.MendixObjectMemberImpl.getValue(MendixObjectMemberImpl.java:218) at com.mendix.webui.jsonserialization.ValueConverter$$anon$1.apply(ValueConverter.scala:31) at com.mendix.webui.jsonserialization.ValueConverter$.convertValue(ValueConverter.scala:128) at com.mendix.webui.jsonserialization.ValueConverter$.convertOriginalMemberValue(ValueConverter.scala:29) at com.mendix.webui.jsonserialization.MendixObjectConverter$.convertMemberValue(MendixObjectConverter.scala:81) at com.mendix.webui.jsonserialization.MendixObjectConverter$.$anonfun$convert$1(MendixObjectConverter.scala:34) at scala.collection.MapView$MapValues.$anonfun$iterator$1(MapView.scala:119) at scala.collection.Iterator$$anon$9.next(Iterator.scala:584) at scala.collection.mutable.Growable.addAll(Growable.scala:62) at scala.collection.mutable.Growable.addAll$(Growable.scala:57) at scala.collection.immutable.MapBuilderImpl.addAll(Map.scala:690) at scala.collection.immutable.Map$.from(Map.scala:641) at scala.collection.IterableOnceOps.toMap(IterableOnce.scala:1293) at scala.collection.IterableOnceOps.toMap$(IterableOnce.scala:1292) at scala.collection.AbstractIterable.toMap(Iterable.scala:933) at com.mendix.webui.jsonserialization.MendixObjectConverter$.convert(MendixObjectConverter.scala:34) at com.mendix.webui.jsonserialization.MendixObjectConverter$.convert(MendixObjectConverter.scala:22) at com.mendix.webui.jsonserialization.OutgoingState$.$anonfun$getResponse$1(OutgoingState.scala:37) at scala.collection.immutable.List.map(List.scala:246) at scala.collection.immutable.List.map(List.scala:79) at com.mendix.webui.jsonserialization.OutgoingState$.getResponse(OutgoingState.scala:37) at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:62) at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:46) at com.mendix.webui.actions.client.RuntimeOperationAction.executeObjectAction(RuntimeOperationAction.scala:85) at com.mendix.webui.actions.client.RuntimeOperationAction.$anonfun$apply$1(RuntimeOperationAction.scala:56) at scala.util.Either.flatMap(Either.scala:352) at com.mendix.webui.actions.client.RuntimeOperationAction.apply(RuntimeOperationAction.scala:41) at com.mendix.webui.actions.client.RuntimeOperationAction.apply(RuntimeOperationAction.scala:30) at com.mendix.webui.actions.client.RegularClientAction$Helpers$.$anonfun$liftEither$1(RegularClientAction.scala:30) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:120) at scala.util.Try$.apply(Try.scala:210) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:120) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:118) at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$7(ContextHandling.scala:58) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18) at com.mendix.basis.actionmanagement.ActionMonitoring$.$anonfun$monitor$1(ActionMonitoring.scala:52) at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20) at com.mendix.basis.actionmanagement.ActionMonitoring$.monitor(ActionMonitoring.scala:52) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:58) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:32) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:94) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:29) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:21) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:94) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:118) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest(ProfileHandling.scala:14) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest$(ProfileHandling.scala:10) at com.mendix.webui.actions.client.RegularClientAction.profileRequest(RegularClientAction.scala:94) at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:115) at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:105) at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:78) at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:37) at com.mendix.external.connector.MxRuntimeConnector.$anonfun$processRequest$1(MxRuntimeConnector.scala:54) at com.mendix.external.connector.MxRuntimeConnector.$anonfun$processRequest$1$adapted(MxRuntimeConnector.scala:54) at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20) at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.scala:54) at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.scala:221) at com.mendix.m2ee.appcontainer.server.handler.RuntimeServlet.service(RuntimeServlet.scala:40) at javax.servlet.http.HttpServlet.service(HttpServlet.java:750) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764) at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1665) at org.eclipse.jetty.websocket.servlet.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:170) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:527) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1570) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1385) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:484) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1543) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1307) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122) at org.eclipse.jetty.server.Server.handle(Server.java:563) at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:505) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:762) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:497) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:314) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100) at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:416) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:385) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:272) at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.lambda$new$0(AdaptiveExecutionStrategy.java:140) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:411) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:936) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1080) at java.base/java.lang.Thread.run(Thread.java:829) Note: I did’t set security options yet, and I set the user role as well, the problem still there. how to solve the problem? please help. Thank you in advance. Best regards Li Dong
asked
Dong LI
2 answers
1
MyFirstModule.Get_ProductionLine Microflow is being called with $variable that is empty or 0, then this function fails: substring($Variable,0,length($Variable)-1)
check in that microflow what the variable is supposed to be and why it is empty, something you could do in that microflow is a check if $variable != empty and $variable != 0 before proceeding to change the value.