Agfdhyk

I am listing restaurants into a HTML table using th:each. I would like to add a button to every row where I can delete the actual row data (so i want to send the Restaurant ID to Spring, then I would like to delete that restaurant from database. And in each row I also would like to create an Add admin form (because I don't want to create a new HTML page for this only with 1 input field).
So basically my question, how can I do this?

Here is my HTML table:

<table class="table">

                    <thead>

                    <tr>

                        <th scope="col">Restaurant</th>

                        <th scope="col">Delivery time</th>

                        <th scope="col">Delivery Price</th>

                        <th scope="col">Minimum Order Price</th>

                        <th scope="col">Shopping Hours</th>

                    </tr>

                    </thead>

                    <tbody>

                        <tr th:each="rest: ${restaurants}">



                            <td th:text="${rest.name}"/>

                            <td th:text="${rest.avgdeliverytime}"/>

                            <td th:text="${rest.deliveryprice}"/>

                            <td th:text="${rest.minorderprice}"/>

                            <td th:text="${rest.hours.open} + ' - '+ ${rest.hours.close}"/>

                            <td>



                                <form th:action="@{'restaurants/delete'}" method="post">

                                    <button type="submit" class="btn btn-danger btn-block"/>

                                    Delete</button>

                                </form>



                            </td>

                            <td>

                                <form th:action="@{'restaurants/newadmin'}" th:object="${restadmin}" method="post">

                                <input type="hidden" name="restaurantId" th:value="${rest.id}" th:field="${restadmin.restid}">

                                <input type="email" class="form-control" id="adminEmail" th:field="${restadmin.email}">

                                <button type="submit" class="btn btn-secondary btn-block"/>

                                Add Admin</button>

                                </form>



                            </td>

                        </tr>

                    </tbody>

                </table>

For this, I created a new class, called RestaurantAdmin, to post this object back to Controller

public class RestaurantAdmin {



private String email;

private Long restid;



public RestaurantAdmin() {

}



public RestaurantAdmin(String email, Long restid) {

    this.email = email;

    this.restid = restid;

}



public String getEmail() {

    return email;

}



public void setEmail(String email) {

    this.email = email;

}



public Long getRestid() {

    return restid;

}



public void setRestid(Long restid) {

    this.restid = restid;

}

My Controller methods:

    @GetMapping("/restaurants")

public String getAllRestaurants(Model model) {

    model.addAttribute("restaurants", restaurantService.findAll());

    model.addAttribute("restadmin", new RestaurantAdmin());

    return "administration/restaurants";

}

  @PostMapping("/restaurants/newadmin")

public ModelAndView addNewAdminToRestaurant(@ModelAttribute(value="restadmin") RestaurantAdmin restaurantAdmin,

                                            final BindingResult result, ModelAndView modelAndView) {



    if(result.hasErrors()) {

        modelAndView.addObject("error", "Some error are occured!");

        modelAndView.setViewName("administration/restaurants");

        return modelAndView;

    }



    System.out.println(restaurantAdmin.getRestid());

    System.out.println(restaurantAdmin.getEmail());



    modelAndView.setViewName("administration/restaurants");

    return modelAndView;

}

With these codes, I don't get any exception, but when I add an email address to Add admin form then post it to Spring, the restaurantAdmin's ID is null.

If I add the following line to the deletion form (which actually makes no sense, because I don't even have object to post or something. )

<input type="hidden" name="restaurantId" th:field="${rest.id}">

I get this exception:

2018-11-09 15:44:16.504 ERROR 17052 --- [nio-8443-exec-3] org.thymeleaf.TemplateEngine             : [THYMELEAF][https-jsse-nio-8443-exec-3] Exception processing template "administration/restaurants": An error happened during template parsing (template: "class path resource [templates/administration/restaurants.html]")



org.thymeleaf.exceptions.TemplateInputException: An error happened during template parsing (template: "class path resource [templates/administration/restaurants.html]")

at org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parse(AbstractMarkupTemplateParser.java:241) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parseStandalone(AbstractMarkupTemplateParser.java:100) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:666) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) [thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) [thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:354) [thymeleaf-spring5-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:187) [thymeleaf-spring5-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1325) [spring-webmvc-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1069) [spring-webmvc-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1008) [spring-webmvc-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925) [spring-webmvc-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974) [spring-webmvc-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866) [spring-webmvc-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851) [spring-webmvc-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat-embed-websocket-8.5.34.jar:8.5.34]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:100) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:66) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) [spring-security-web-5.0.8.RELEASE.jar:5.0.8.RELEASE]

at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498) [tomcat-embed-core-8.5.34.jar:8.5.34]

at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.34.jar:8.5.34]

at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) [na:na]

at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) [na:na]

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.34.jar:8.5.34]

at java.base/java.lang.Thread.run(Thread.java:844) [na:na]

Caused by: org.attoparser.ParseException: Error during execution of processor 'org.thymeleaf.spring5.processor.SpringInputGeneralFieldTagProcessor' (template: "administration/restaurants" - line 54, col 82)

at org.attoparser.MarkupParser.parseDocument(MarkupParser.java:393) ~[attoparser-2.0.4.RELEASE.jar:2.0.4.RELEASE]

at org.attoparser.MarkupParser.parse(MarkupParser.java:257) ~[attoparser-2.0.4.RELEASE.jar:2.0.4.RELEASE]

at org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parse(AbstractMarkupTemplateParser.java:230) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

... 87 common frames omitted



Caused by: org.thymeleaf.exceptions.TemplateProcessingException: Error during execution of processor 'org.thymeleaf.spring5.processor.SpringInputGeneralFieldTagProcessor' (template: "administration/restaurants" - line 54, col 82)

at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:117) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.engine.ProcessorTemplateHandler.handleStandaloneElement(ProcessorTemplateHandler.java:918) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.engine.StandaloneElementTag.beHandled(StandaloneElementTag.java:228) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.engine.Model.process(Model.java:282) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.engine.Model.process(Model.java:290) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.engine.IteratedGatheringModelProcessable.processIterationModel(IteratedGatheringModelProcessable.java:367) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.engine.IteratedGatheringModelProcessable.process(IteratedGatheringModelProcessable.java:221) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.engine.ProcessorTemplateHandler.handleCloseElement(ProcessorTemplateHandler.java:1640) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.engine.TemplateHandlerAdapterMarkupHandler.handleCloseElementEnd(TemplateHandlerAdapterMarkupHandler.java:388) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.templateparser.markup.InlinedOutputExpressionMarkupHandler$InlineMarkupAdapterPreProcessorHandler.handleCloseElementEnd(InlinedOutputExpressionMarkupHandler.java:322) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.standard.inline.OutputExpressionInlinePreProcessorHandler.handleCloseElementEnd(OutputExpressionInlinePreProcessorHandler.java:220) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.templateparser.markup.InlinedOutputExpressionMarkupHandler.handleCloseElementEnd(InlinedOutputExpressionMarkupHandler.java:164) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.attoparser.HtmlElement.handleCloseElementEnd(HtmlElement.java:169) ~[attoparser-2.0.4.RELEASE.jar:2.0.4.RELEASE]

at org.attoparser.HtmlMarkupHandler.handleCloseElementEnd(HtmlMarkupHandler.java:412) ~[attoparser-2.0.4.RELEASE.jar:2.0.4.RELEASE]

at org.attoparser.MarkupEventProcessorHandler.handleCloseElementEnd(MarkupEventProcessorHandler.java:473) ~[attoparser-2.0.4.RELEASE.jar:2.0.4.RELEASE]

at org.attoparser.ParsingElementMarkupUtil.parseCloseElement(ParsingElementMarkupUtil.java:201) ~[attoparser-2.0.4.RELEASE.jar:2.0.4.RELEASE]

at org.attoparser.MarkupParser.parseBuffer(MarkupParser.java:725) ~[attoparser-2.0.4.RELEASE.jar:2.0.4.RELEASE]

at org.attoparser.MarkupParser.parseDocument(MarkupParser.java:301) ~[attoparser-2.0.4.RELEASE.jar:2.0.4.RELEASE]

... 89 common frames omitted



Caused by: java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'rest' available as request attribute

at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:153) ~[spring-webmvc-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.springframework.web.servlet.support.RequestContext.getBindStatus(RequestContext.java:903) ~[spring-webmvc-5.0.9.RELEASE.jar:5.0.9.RELEASE]

at org.thymeleaf.spring5.context.webmvc.SpringWebMvcThymeleafRequestContext.getBindStatus(SpringWebMvcThymeleafRequestContext.java:227) ~[thymeleaf-spring5-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.spring5.util.FieldUtils.getBindStatusFromParsedExpression(FieldUtils.java:305) ~[thymeleaf-spring5-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.spring5.util.FieldUtils.getBindStatus(FieldUtils.java:257) ~[thymeleaf-spring5-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.spring5.util.FieldUtils.getBindStatus(FieldUtils.java:226) ~[thymeleaf-spring5-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.spring5.processor.AbstractSpringFieldTagProcessor.doProcess(AbstractSpringFieldTagProcessor.java:174) ~[thymeleaf-spring5-3.0.9.RELEASE.jar:3.0.9.RELEASE]

at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.0.9.RELEASE.jar:3.0.9.RELEASE]

... 108 common frames omitted

Edit: Restaurant Entity

@Entity

public class Restaurant {

@Id

@GeneratedValue(strategy = GenerationType.AUTO)

private Long id;

@Column(name="RESTAURANT_NAME")

private String name;

@Column(name="AVERAGE_DELIVERY_TIME")

private String avgdeliverytime;

@Column(name="MINIMUM_ORDER_PRICE")

private Short minorderprice;

@Column(name="DELIVERY_PRICE")

private Short deliveryprice;



@Embedded

private ShoppingHours hours;



@ElementCollection

@CollectionTable(name = "MENU", joinColumns = @JoinColumn(name = "RESTAURANT_ID"))

@Column(name = "MENU")

private List<Meal> menu;



@OneToMany

@JoinTable(name = "RESTAURANT_WORKERS",

        joinColumns = {@JoinColumn(name = "RESTAURANT_ID")},

        inverseJoinColumns = {@JoinColumn(name = "WORKER_ID")})

@Column(name = "WORKER_ID")

private List<User> workers;





public Restaurant() {

}



public Restaurant(String name, String avgdeliverytime, Short minorderprice, Short deliveryprice,

                  ShoppingHours hours) {

    this.name = name;

    this.avgdeliverytime = avgdeliverytime;

    this.minorderprice = minorderprice;

    this.deliveryprice = deliveryprice;

    this.hours = hours;

}



public Long getId() {

    return id;

}



public void setId(Long id) {

    this.id = id;

}



public String getName() {

    return name;

}



public void setName(String name) {

    this.name = name;

}



public String getAvgdeliverytime() {

    return avgdeliverytime;

}



public void setAvgdeliverytime(String avgdeliverytime) {

    this.avgdeliverytime = avgdeliverytime;

}



public Short getMinorderprice() {

    return minorderprice;

}



public void setMinorderprice(Short minorderprice) {

    this.minorderprice = minorderprice;

}



public Short getDeliveryprice() {

    return deliveryprice;

}



public void setDeliveryprice(Short deliveryprice) {

    this.deliveryprice = deliveryprice;

}



public ShoppingHours getHours() {

    return hours;

}



public void setHours(ShoppingHours hours) {

    this.hours = hours;

}



public List<Meal> getMenu() {

    return menu;

}



public void setMenu(List<Meal> menu) {

    this.menu = menu;

}

}

You can't add th:value and th:field together, because th:field will override it. What you can do, is remove the th:field tag and instead use a name and a value. So instead of receiving a @ModelAttribute, you will be receiving two @RequestParam. To do so, you would need to add the following changes to your code.

Controller

@PostMapping("/restaurants/newadmin")

public ModelAndView addNewAdminToRestaurant(ModelAndView modelAndView,

           @RequestParam("restaurantId") Long id,

           @RequestParam("email") String email) { ... }

HTML

<form th:action="@{'restaurants/newadmin'}" method="post">

    <input type="hidden" name="restaurantId" th:value="${rest.id}">

    <input type="email" name="email" class="form-control" id="adminEmail">

    <button type="submit" class="btn btn-secondary btn-block"/>Add Admin</button>

</form>

Tip

When using th:object with multiple forms, instead of sending just one RestaurantAdmin object, you should try to create a new one for each iteration. A simple way to do this, is adding a @MadelAttribute to your controller, that will return a new object every time you call it in a th:object. Of course, for your case, this won't change anything, since the real solution is receiving two params instead of an object, but is just a small tip.

// In order to use th:object in multiple forms, we must be able to map a new entity to that form.

@ModelAttribute(value = "newRestAdmin")

public RestaurantAdmin newRestAdmin() {return new RestaurantAdmin();}

Then on your forms you just fetch the new entity with the given value.

<form th:action="@{'restaurants/newadmin'}" th:object="${newRestAdmin}" method="post">