How to update two tables by using spring boot? - spring

Question

DemoModel
package com.example.demo.model;
import java.util.Date;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
import org.springframework.format.annotation.DateTimeFormat;
#Entity(name="demomodel")
public class DemoModel {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
#NotNull
#Size(min=3, max=20)
private String fname;
private String lname;
#Min(message="Age should be 18 atleast ",value=18)
private Integer age;
#Pattern(message = "Invalid email id",regexp = "^[A-Za-z0-9+_.-]+#(.+)$")
private String email;
private String course;
#DateTimeFormat(pattern = "yyyy-MM-dd")
private Date dob;
#OneToOne(cascade=CascadeType.ALL)
#JoinColumn(name="add_id")
private Address address;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getFname() {
return fname;
}
public void setFname(String fname) {
this.fname = fname;
}
public String getLname() {
return lname;
}
public void setLname(String lname) {
this.lname = lname;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getCourse() {
return course;
}
public void setCourse(String course) {
this.course = course;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Date getDob() {
return dob;
}
public void setDob(Date dob) {
this.dob = dob;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
}
Address
package com.example.demo.model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToOne;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
#Entity
public class Address {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
#NotNull
#Size(min=2, max=30)
private String city;
private String state;
//#OneToOne(mappedBy="address",cascade = CascadeType.ALL)
//#JoinColumn(name="id")
#OneToOne(mappedBy="address")
private DemoModel demo;
public DemoModel getDemo() {
return demo;
}
public void setDemo(DemoModel demo) {
this.demo = demo;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
}
DemoController
package com.example.demo.controller;
import javax.validation.Valid;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.example.demo.model.Address;
import com.example.demo.model.DemoModel;
import com.example.demo.repository.AddressRepo;
import com.example.demo.repository.DemoRepo;
import com.example.demo.service.DemoService;
//#RestController
#Controller
public class DemoController {
private static final Logger logger = LoggerFactory.getLogger(DemoController.class);
#Autowired
DemoRepo demoRepo;
#Autowired
AddressRepo addRepo;
#Autowired
DemoService demoService;
#RequestMapping(value="/", method=RequestMethod.GET)
public String demoApp(DemoModel demoModel,Address address) {
return "home";
}
#RequestMapping(value="/formsubmit",method=RequestMethod.POST)
public String demoForm(#Valid DemoModel demoModel,BindingResult result, #Valid Address address,BindingResult res) {
if(result.hasErrors()) {
logger.warn("in first binding");
return "home";
}
else if(res.hasErrors()) {
logger.warn("in second binding");
return "home";
}
else
{
demoModel.setAddress(address);
demoRepo.save(demoModel);
//addRepo.save(address);
//mv.addObject("demoModel", demoModel);
//addRepo.save(address);
//mv.setViewName("redirect:/dashboard");
return "redirect:/dashboard";
}
}
#RequestMapping(value="/dashboard",method=RequestMethod.GET)
public String dashform(Model model){
model.addAttribute("demoModel", demoService.dashform());
return "dashboard";
}
#RequestMapping(value = "delete/{id}", method = RequestMethod.GET)
public String delete(#PathVariable("id") int id) {
demoRepo.deleteById(id);
return "redirect:/dashboard";
}
#RequestMapping(value = "edit/{id}", method = RequestMethod.GET)
public String edit(#PathVariable("id") int id,ModelMap modelMap,DemoModel demoModel,Address address) {
modelMap.put("demoModel", demoService.find(id));
return "edit";
}
#RequestMapping(value = "edit", method = RequestMethod.POST)
public String edit(#ModelAttribute("demoModel") DemoModel demoModel,#ModelAttribute("address") Address address,ModelMap modelMap) {
DemoModel dm=demoService.find(demoModel.getId());
dm.setFname(demoModel.getFname());
dm.setLname(demoModel.getLname());
dm.setCourse(demoModel.getCourse());
dm.setEmail(demoModel.getEmail());
dm.setAge(demoModel.getAge());
dm.setDob(demoModel.getDob());
//dm.setAddress(address);
demoRepo.save(dm);
return "edit";
}
}
DemoRepository
package com.example.demo.repository;
import org.springframework.data.repository.CrudRepository;
import com.example.demo.model.DemoModel;
public interface DemoRepo extends CrudRepository<DemoModel, Integer> {
}
AddressRepository
package com.example.demo.repository;
import org.springframework.data.repository.CrudRepository;
import com.example.demo.model.Address;
public interface AddressRepo extends CrudRepository<Address, Integer> {
}
DemoService
package com.example.demo.service;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.example.demo.model.DemoModel;
import com.example.demo.repository.DemoRepo;
#Service
public class DemoService{
#Autowired
DemoRepo demoRepo;
private List<DemoModel> demoModels;
public List <DemoModel> dashform(){
demoModels=new ArrayList<DemoModel>();
for(DemoModel demoModel:demoRepo.findAll() ) {
demoModels.add(demoModel);
}
return demoModels;
}
public DemoModel find(int id) {
// TODO Auto-generated method stub
return demoRepo.findById(id).orElse(null);
}
}
edit.html
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head><!--
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<link rel="stylesheet" href="/source/styles.css" /> -->
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<h1>Data Received</h1>
<form action="#" th:action="#{/edit}" method="post">
<div th:object="${demoModel}" >
<table th:each="demoModel: ${demoModel}">
<tr>
<td>Id:</td>
<td><input type="text" th:field="*{id}" th:placeholder="#{demoModel.id}"/></td>
<!-- <td th:if="${#fields.hasErrors('fname')}" th:errors="*{fname}">first
name Error</td> -->
</tr>
<tr>
<td>First Name:</td>
<td><input type="text" th:field="*{fname}" th:placeholder="#{demoModel.fname}"/></td>
<!-- <td th:if="${#fields.hasErrors('fname')}" th:errors="*{fname}">first
name Error</td> -->
</tr>
<tr>
<td>Last Name:</td>
<td><input type="text" th:field="*{lname}" th:placeholder="#{demoModel.lname}"/></td>
<!-- <td th:if="${#fields.hasErrors('lname')}" th:errors="*{lname}">Last
name Error</td> -->
</tr>
<tr>
<td>Email:</td>
<td><input type="text" th:field="*{email}" th:placeholder="#{demoModel.email}"/></td>
<!-- <td th:if="${#fields.hasErrors('email')}" th:errors="*{email}">Email
Error</td> -->
</tr>
<tr>
<td>Course:</td>
<td><input type="text" th:field="*{course}" th:placeholder="#{demoModel.course}"/></td>
<!-- <td th:if="${#fields.hasErrors('course')}" th:errors="*{course}">course
Error</td> -->
</tr>
<tr>
<td>DOB:</td>
<td><input type="date" th:field="*{dob}" th:placeholder="#{demoModel.dob}"/></td>
<!-- <td th:if="${#fields.hasErrors('dob')}" th:errors="*{dob}">age
Error</td> -->
</tr>
<tr>
<td>Age:</td>
<td><input type="text" th:field="*{age}" th:placeholder="#{demoModel.age}"/></td>
<!-- <td th:if="${#fields.hasErrors('age')}" th:errors="*{age}">age
Error</td> -->
</tr>
</table>
</div>
<div th:object="${address}">
<table th:each="demoModel: ${demoModel}">
<tr>
<td>State:</td>
<td><input type="text" th:field="*{state}" th:placeholder="#{demoModel.address.state}"/></td>
</tr>
<tr>
<td>City:</td>
<td><input type="text" th:field="*{city}" th:placeholder="#{demoModel.address.city}"/></td>
</tr>
</table>
</div>
<button type="submit">Submit</button>
</form>
</body>
</html>
dashboard.html
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head lang="en">
<link rel="stylesheet" href="/source/styles.css" /><!--
<link href="//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css" rel="stylesheet"> -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"><!--
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> -->
</head>
<body>
<h1>Data Received</h1>
<table>
<tr >
<th rowspan=2>Id</th>
<th rowspan=2>First Name</th>
<th rowspan=2>Last Name</th>
<th rowspan=2>Email</th>
<th rowspan=2>Age</th>
<th rowspan=2>Date of Birth</th>
<th rowspan=2>Course</th>
<th colspan=2>Address</th>
<th rowspan=2>Action</th>
</tr>
<tr>
<th>City</th>
<th>State</th>
</tr>
<tr th:each="demoModel: ${demoModel}">
<td th:text="${demoModel.id}">Id</td>
<td th:text="${demoModel.fname}">First Name</td>
<td th:text="${demoModel.lname}">Last Name</td>
<td th:text="${demoModel.email}">Email</td>
<td th:text="${demoModel.age}">Age</td>
<td th:text="${demoModel.dob}">DOB</td>
<td th:text="${demoModel.course}">Course</td>
<td th:text="${demoModel.address.city}">City</td>
<td th:text="${demoModel.address.state}">State</td>
<td> <a class="btn" th:href="#{/delete/{id}/(id=${demoModel.id})}"> <span class="glyphicon glyphicon-trash"></span> </a>
<a class="btn" th:href="#{/edit/{id}/(id=${demoModel.id})}"> <span class="glyphicon glyphicon-edit"></span> </a>
</td>
</tr>
</table>
<h2> Go to form </h2>
</body>
Dashboard
Edit
So, the question is how to update two tables? When I click on edit then it is redirected to the edit page where I see the details of demoModel object but the details of address object is not displayed. I don't know whether this issue prevent me to update both the tables or there is another problem in controller for updating data.
While I access the edit page without the intention of updating the details of both the tables demoModel and address is being fetched efficiently for a particular ID.
My Intention of Updating both the table is failed here.
Please, experts go through all the codes above and suggest me a better solution how can I update both the OneToOne mapped table.

Answer 1

You don't see address because it's not loaded.
modelMap.put("demoModel", demoService.find(id));
Here you are passing only DemoModel and you need also to load Address. In Your DemoModel should define
#OneToOne(mappedBy="address", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
#JoinColumn(name="add_id")
private Address address;
Now also in your edit Address object should be present