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Edit Item in Intellij IDEA

arotto8719 on May 21, 2020

@RequestMapping(value="edit/{postId}", method = RequestMethod.GET) public String displayEditForm(Model model, @PathVariable int postId, Error e...
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raviyasas profile image
Ravi Yasas •

You need to autowire the repository like below

@Autowired
    private ArtifactRepository artifactRepository;

    @RequestMapping(value="edit", method= RequestMethod.POST)
    public String processEditForm(@RequestParam(value="post_id") int post_id, @RequestParam(value="name") String name, @RequestParam(value="location") String location, @RequestParam(value="description") String description, Model model) {

        ThePost thePost = artifactRepository.findById(post_id).get();
        thePost.setName(name);
        thePost.setLocation(location);
        thePost.setDescription(description);
        artifactRepository.save(thePost);
        return "index";
    }
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declantreanor profile image
declanTreanor •

in which case the OP would have gotten a Nullpointer, which wasn't shared. A bit more detail would be helpful but, certainly, not autowiring that dependency would cause problems.

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arotto8719 profile image
arotto8719 •

I have no idea what a null pointer is

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arotto8719 profile image
arotto8719 •

github.com/arotto8719/app

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arotto8719 profile image
arotto8719 •

Trying But I’m having trouble uploading photos. Any ideas?

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arotto8719 profile image
arotto8719 •

github.com/arotto8719/app

The whole code is on here.

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raviyasas profile image
Ravi Yasas •

When we are creating a Spring web application, the business logic should be in a separate layer as a Service. So we have Controller, Service, Repositories, and Models. Please check this github.com/raviyasas/spring-boot-hibernate-demo.git

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arotto8719 profile image
arotto8719 • • Edited

I have all that on there but I need to know what to put in the exact lines so I can save and edited item.

Something besides the Post or whatever.

I have artifact repository.

Am I supposed to copy and paste what you have or do I have to make mine similar to yours?

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raviyasas profile image
Ravi Yasas •

It is better if you can write your own code like mine or you can use my one. It is the best practice to write code in mvc pattern. That is why I mentioned it.

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arotto8719 profile image
arotto8719 •

I already have that on top of home controller

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arotto8719 profile image
arotto8719 •

@RequestMapping(value="edit/{postId}", method = RequestMethod.GET)
public String displayEditForm(Model model, @PathVariable int postId, Error error){
Artifact thePost = artifactRepository.findById(postId).get();
artifactRepository.save(thePost);
model.addAttribute("thePost", thePost);
return "edit";
}

@RequestMapping(value="edit/{post_id}", method=RequestMethod.POST)
public String processEditForm(@RequestParam(value="edit/{post_id}") @PathVariable int post_id, @RequestParam(value="name") String name, @RequestParam(value="location") String location, @RequestParam(value="description") String description, Model model) {
    Artifact thePost = artifactRepository.findById(post_id).get();
    thePost.setName(name);
    thePost.setLocation(location);
    thePost.setDescription(description);
    artifactRepository.save(thePost);
    return "index";
}

This is the problem area. I need exact words and descriptions on what it's supposed to look like.

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arotto8719 profile image
arotto8719 •

package org.launchcode.app.controllers;

import org.launchcode.app.data.Artifact;
import org.launchcode.app.data.ArtifactRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.Errors;
import org.springframework.web.bind.annotation.*;

import javax.persistence.Id;
import javax.validation.Valid;
import java.util.HashMap;

@Controller
public class HomeController {

@Autowired
private ArtifactRepository artifactRepository;

@RequestMapping(value = "/")
public String index(Model model) {

// model.addAttribute("database", "Database");
// model.addAttribute("images", "Images");
model.addAttribute("add", "Add");
model.addAttribute("search", "Search");
model.addAttribute("edit", "Edit");
model.addAttribute("delete", "Delete");
// model.addAttribute("thePost", thePost);
model.addAttribute("artifacts", artifactRepository.findAll());
HashMap actionChoices = new HashMap<>();
return "index";
}

@GetMapping("add")
public String displayAddArtifactForm(Model model) {
    model.addAttribute(new Artifact());
    model.addAttribute("artifact", new Artifact());
    return "add";
}

@PostMapping("add")
@ResponseBody
public String processAddArtifactForm(@ModelAttribute @Valid Artifact newArtifact,
                                     Errors errors) {
    if (errors.hasErrors()) {
        return "add";
    } else {
        artifactRepository.save(newArtifact);
        return "index";
    }
}

@RequestMapping(value="edit/{postId}", method = RequestMethod.GET)
public String displayEditForm(Model model, @PathVariable int postId, Error error){
    Artifact thePost = artifactRepository.findById(postId).get();
    artifactRepository.save(thePost);
    model.addAttribute("thePost", thePost);
    return "edit";
}

@RequestMapping(value="edit/{post_id}", method=RequestMethod.POST)
public String processEditForm(@RequestParam(value="edit/{post_id}") @PathVariable int post_id, @RequestParam(value="name") String name, @RequestParam(value="location") String location, @RequestParam(value="description") String description, Model model) {
    Artifact thePost = artifactRepository.findById(post_id).get();
    thePost.setName(name);
    thePost.setLocation(location);
    thePost.setDescription(description);
    artifactRepository.save(thePost);
    return "index";
}
@RequestMapping(value = "delete/{id}", method = RequestMethod.GET)
public String delete(@PathVariable("id") int id) {
        artifactRepository.deleteById(id);
    return "index";
}

@GetMapping("view/{artifactId}")
public String displayViewArtifactId(Model model, @PathVariable int Id) {
    return "index";
}

// @GetMapping("view/{Images}")
// public String displayViewImagesId(Model model, @PathVariable int Id) {
// return "images";
// }
}

Ok moving on
This is my entire home controller.

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arotto8719 profile image
arotto8719 •

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.
Fri May 22 17:14:24 CDT 2020
There was an unexpected error (type=Bad Request, status=400).
Required int parameter 'edit/{post_id}' is not present
org.springframework.web.bind.MissingServletRequestParameterException: Required int parameter 'edit/{post_id}' is not present
at org.springframework.web.method.annotation.RequestParamMethodArgumentResolver.handleMissingValue(RequestParamMethodArgumentResolver.java:204)
at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:114)
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121)
at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:167)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:888)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1591)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:830)

Here's the error page.
What's the answer?

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arotto8719 profile image
arotto8719 •

Here’s the photo

thePost thePost didn’t work either

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arotto8719 profile image
arotto8719 •

how do I add photos of this problem on my phone to this site?

This is for a class I'm in.

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arotto8719 profile image
arotto8719 •

What it looks like

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arotto8719 profile image
arotto8719 •

Post not supported