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Error when editing entities with nullable @OneToOne relationships #49

Closed
the-mars-rover opened this issue Oct 14, 2024 · 5 comments · Fixed by #50
Closed

Error when editing entities with nullable @OneToOne relationships #49

the-mars-rover opened this issue Oct 14, 2024 · 5 comments · Fixed by #50
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@aileftech
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bug Something isn't working

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@the-mars-rover
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Describe the bug
When an entity has a nullable @OnetoOne relationship with another entity, editing the entity leads to a Thymeleaf error (see stack trace below) and problems in displaying the edit page (see screenshot below).

Is the bug at startup before you perform any action?
No

Stacktrace

2024-10-14T13:22:10.756+02:00 ERROR 9832 --- [persons] [nio-8080-exec-7] org.thymeleaf.TemplateEngine             : [THYMELEAF][http-nio-8080-exec-7] Exception processing template "snapadmin/model/create": Exception evaluating SpringEL expression: "
												create ? (params != null ? params.getOrDefault(field.getName(), '') : '') 
														 : (object != null ? object.traverse(field).getPrimaryKeyValue() : '' )
											" (template: "snapadmin/model/create" - line 44, col 17)

org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "
												create ? (params != null ? params.getOrDefault(field.getName(), '') : '') 
														 : (object != null ? object.traverse(field).getPrimaryKeyValue() : '' )
											" (template: "snapadmin/model/create" - line 44, col 17)
	at org.thymeleaf.spring6.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:292) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.VariableExpression.executeVariableExpression(VariableExpression.java:166) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:66) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.Expression.execute(Expression.java:109) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.Expression.execute(Expression.java:138) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.FragmentExpression.createExecutedFragmentExpressionParameters(FragmentExpression.java:508) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.FragmentExpression.doCreateExecutedFragmentExpression(FragmentExpression.java:450) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.FragmentExpression.createExecutedFragmentExpression(FragmentExpression.java:405) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.processor.AbstractStandardFragmentInsertionTagProcessor.computeFragment(AbstractStandardFragmentInsertionTagProcessor.java:416) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.processor.AbstractStandardFragmentInsertionTagProcessor.doProcess(AbstractStandardFragmentInsertionTagProcessor.java:115) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.Model.process(Model.java:290) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.IteratedGatheringModelProcessable.processIterationModel(IteratedGatheringModelProcessable.java:368) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.IteratedGatheringModelProcessable.process(IteratedGatheringModelProcessable.java:294) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.handleCloseElement(ProcessorTemplateHandler.java:1640) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.CloseElementTag.beHandled(CloseElementTag.java:139) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:592) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1103) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1077) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.spring6.view.ThymeleafView.renderFragment(ThymeleafView.java:372) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.spring6.view.ThymeleafView.render(ThymeleafView.java:192) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1432) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1168) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1106) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564) ~[tomcat-embed-core-10.1.30.jar:6.0]
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) ~[tomcat-embed-core-10.1.30.jar:6.0]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:195) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) ~[tomcat-embed-websocket-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-6.1.13.jar:6.1.13]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.13.jar:6.1.13]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-6.1.13.jar:6.1.13]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.13.jar:6.1.13]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-6.1.13.jar:6.1.13]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.13.jar:6.1.13]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:483) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:384) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:905) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1741) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1190) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at java.base/java.lang.Thread.run(Thread.java:1583) ~[na:na]
Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1011E: Method call: Attempted to call method getPrimaryKeyValue() on null context object
	at org.springframework.expression.spel.ast.MethodReference.throwIfNotNullSafe(MethodReference.java:167) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.MethodReference.getValueRef(MethodReference.java:96) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.CompoundExpression.getValueRef(CompoundExpression.java:75) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:96) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.Ternary.getValueInternal(Ternary.java:59) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.Ternary.getValueInternal(Ternary.java:59) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:114) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:338) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.thymeleaf.spring6.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:265) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	... 68 common frames omitted

2024-10-14T13:22:10.758+02:00 ERROR 9832 --- [persons] [nio-8080-exec-7] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "
												create ? (params != null ? params.getOrDefault(field.getName(), '') : '') 
														 : (object != null ? object.traverse(field).getPrimaryKeyValue() : '' )
											" (template: "snapadmin/model/create" - line 44, col 17)] with root cause

org.springframework.expression.spel.SpelEvaluationException: EL1011E: Method call: Attempted to call method getPrimaryKeyValue() on null context object
	at org.springframework.expression.spel.ast.MethodReference.throwIfNotNullSafe(MethodReference.java:167) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.MethodReference.getValueRef(MethodReference.java:96) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.CompoundExpression.getValueRef(CompoundExpression.java:75) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:96) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.Ternary.getValueInternal(Ternary.java:59) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.Ternary.getValueInternal(Ternary.java:59) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:114) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:338) ~[spring-expression-6.1.13.jar:6.1.13]
	at org.thymeleaf.spring6.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:265) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.VariableExpression.executeVariableExpression(VariableExpression.java:166) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:66) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.Expression.execute(Expression.java:109) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.Expression.execute(Expression.java:138) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.FragmentExpression.createExecutedFragmentExpressionParameters(FragmentExpression.java:508) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.FragmentExpression.doCreateExecutedFragmentExpression(FragmentExpression.java:450) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.expression.FragmentExpression.createExecutedFragmentExpression(FragmentExpression.java:405) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.processor.AbstractStandardFragmentInsertionTagProcessor.computeFragment(AbstractStandardFragmentInsertionTagProcessor.java:416) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.standard.processor.AbstractStandardFragmentInsertionTagProcessor.doProcess(AbstractStandardFragmentInsertionTagProcessor.java:115) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.Model.process(Model.java:290) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.IteratedGatheringModelProcessable.processIterationModel(IteratedGatheringModelProcessable.java:368) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.IteratedGatheringModelProcessable.process(IteratedGatheringModelProcessable.java:294) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.ProcessorTemplateHandler.handleCloseElement(ProcessorTemplateHandler.java:1640) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.CloseElementTag.beHandled(CloseElementTag.java:139) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:592) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1103) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1077) ~[thymeleaf-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.spring6.view.ThymeleafView.renderFragment(ThymeleafView.java:372) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.thymeleaf.spring6.view.ThymeleafView.render(ThymeleafView.java:192) ~[thymeleaf-spring6-3.1.2.RELEASE.jar:3.1.2.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1432) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1168) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1106) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564) ~[tomcat-embed-core-10.1.30.jar:6.0]
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) ~[spring-webmvc-6.1.13.jar:6.1.13]
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) ~[tomcat-embed-core-10.1.30.jar:6.0]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:195) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) ~[tomcat-embed-websocket-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-6.1.13.jar:6.1.13]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.13.jar:6.1.13]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-6.1.13.jar:6.1.13]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.13.jar:6.1.13]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-6.1.13.jar:6.1.13]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.13.jar:6.1.13]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:483) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:384) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:905) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1741) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1190) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63) ~[tomcat-embed-core-10.1.30.jar:10.1.30]
	at java.base/java.lang.Thread.run(Thread.java:1583) ~[na:na]

2024-10-14T13:22:10.765+02:00 ERROR 9832 --- [persons] [nio-8080-exec-7] s.e.ErrorMvcAutoConfiguration$StaticView : Cannot render error page for request [/admin/model/org.persons.entity.Person/edit/1] as the response has already been committed. As a result, the response may have the wrong status code.

@entity code

@Entity
@Data
@NoArgsConstructor
public class Person {
    @Id
    @GeneratedValue
    private Long id;

    @NotNull
    private String name;

    @NotNull
    private LocalDate birthDate;

    @OneToOne
    @Nullable
    private Phone phone;

    @DisplayName
    public String getDisplayName() {
        return String.format("%s (%s-%s-%s)", name, birthDate.getYear(), birthDate.getMonthValue(), birthDate.getDayOfMonth());
    }
}

@Entity
@Data
@NoArgsConstructor
public class Phone {
    @Id
    @GeneratedValue
    private Long id;

    @NotNull
    private String name;
}

application.properties
snapadmin.enabled=true
snapadmin.baseUrl=admin
snapadmin.modelsPackage=org.persons.entity

Additional context
When attempting to edit a Person without a Phone (ie. when encountering the above stack trace), the Edit page is cut off:

Screenshot 2024-10-14 at 13 31 30
@aileftech aileftech self-assigned this Oct 15, 2024
@aileftech aileftech added the bug Something isn't working label Oct 15, 2024
@aileftech
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Thanks! This should be an easy fix

@the-mars-rover
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Thanks! This should be an easy fix

Awesome!

I'm no expert in Thymeleaf but, if I have time, I'll also try make a small contribution and submit a PR :-)

@the-mars-rover
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Also, while I'm here: awesome project man.

@aileftech
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Thank you, I really appreciate it!

If you want to try and fix it you should do as follows: where you see the code

object != null ? object.traverse(field).getPrimaryKeyValue() : ''

It also need to return the empty string if object.traverse(field) is null as well :)

the-mars-rover added a commit to the-mars-rover/snap-admin that referenced this issue Oct 22, 2024
@the-mars-rover
fix(0.2.2): issue aileftech#49 (null pointer exception with optional @…
daba251 
…OnetoOne relationships).
@the-mars-rover the-mars-rover mentioned this issue Oct 22, 2024
Merged
@the-mars-rover
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Contributor Author

Thank you, I really appreciate it!

If you want to try and fix it you should do as follows: where you see the code

object != null ? object.traverse(field).getPrimaryKeyValue() : ''

It also need to return the empty string if object.traverse(field) is null as well :)

PR Submitted: #50 :-)

aileftech added a commit that referenced this issue Oct 24, 2024
@aileftech
Merge pull request #50 from the-mars-rover/main
297224d 
fix(0.2.2): issue #49
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fix(0.2.2): issue #49 the-mars-rover/snap-admin
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@the-mars-rover @aileftech