I have an Employee class that looks like this.
public class Employee {
private String Name;
private List<Address> address;
*****Getters and Setters****
}
And my Address class looks like this
public class Address {
private int addressid;
private Employee employee;
#NotNull(message="Field Cannot be Empty")
private String description;
*****Getters and Setters****
}
I want to bind List of addresses (Employee can have more than one address - 1:M) to the employee class with the data that is parsed through the form. Which looks like this.
I have 3 input address fields, one of the sample input fields look like this...
<div class="form-group">
<div class="row">
<label class="col-sm-3" for="exampleInputEmail1">Address
1</label>
<div class="col-sm-7">
<form:input class="form-control" placeholder="" path="" />
<form:errors path="" cssClass="error" />
</div>
</div>
</div>
Note that I have cut down many unnecessary form fields to demonstrate the problem more clearly. Please help me bind the list of input fields with the relevant class. Any advice for this design is also welcome.
You can use Thymeleaf for this as below.
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>form|data</title>
</head>
<body>
<div class="starter-template">
<form th:action="#{employeeData}" method="post" th:object="${employee}">
<input th:field="*{name}" type="text" th:name="name" name="name" placeholder="name" class="input u-one-third js-get-form-data"/>
<th:block th:each="add,addStat:*{address}">
<input th:field="*{address[__${addStat.index}__].description}" type="text" th:name="add.description" name="description" placeholder="description" class="input u-one-third js-get-form-data"/>
</th:block>
<input type="submit" value="SEND"/>
</form>
</div>
</body>
</html>
Controller.
#RequestMapping(value = "/formData", method = RequestMethod.GET)
public String formData(Map<String, Object> model) {
Employee employee = new Employee();
Address address = new Address();
address.setDescription("TEST");
address.setEmployee(employee);
employee.getAddress().add(address);
model.put("employee",employee);
return "formData";
}
#RequestMapping(value = "/employeeData", method = RequestMethod.POST)
public void employeeData(#Valid Employee employeeData, BindingResult errors) {
System.out.println(employeeData.getName());
}
Please find the working commit here.
Related
I'm learning Spring Boot and I have a problem. I'm creating an Order in one form and then adding the user's details in the second. The second form's GET method has the parameter NewOrder and it's received well (checked using a debugger). Then in this form I'm creating OrderDetails, in which is saved NewOrder and some Strings. Then I'm passing it to the repository using POST method, but in created OrderDetails, there're only Strings and NewOrder is null. How could I resolve it?
First POST method (from the first controller):
#PostMapping
public String processOrder( #ModelAttribute NewOrder order, final RedirectAttributes redirectAttributes) {
redirectAttributes.addFlashAttribute("order", order);
ordersProxy.addOrder(order);
return "redirect:/sendOrder";
}
Second controller (POST and GET):
#GetMapping
public String showSendOrderForm(Model model, #ModelAttribute("order") NewOrder order) {
model.addAttribute("details", new OrderDetails(order) );
model.addAttribute("companies", companyProxy.getCompanies());
return "orderDetails";
}
#PostMapping
public String processTaco( OrderDetails details) {
detailsProxy.addOrderDetails(details);
return "orderDetails";
}
And here, the OrderDetails details in Post Order is null.
orderDetails.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://www.thymeleaf.org">
<head>
<title>Taco Cloud</title>
<link rel="stylesheet" th:href="#{/styles.css}" />
</head>
<body>
<form method="POST" th:object="${details}">
<a th:href="#{/design}" id="another">Order</a><br/>
<h3>Deliver to...</h3>
<label for="name">Name: </label>
<input type="text" th:field="*{name}"/>
<br/>
<label for="surname">Surname: </label>
<input type="text" th:field="*{surname}"/>
<br/>
<label for="room">Room: </label>
<input type="text" th:field="*{room}"/>
<br/>
<br/>
<h2>Please, choose your company:</h2>
<select th:field="*{company}">
<option th:each="i : ${companies}" th:value="${i.id}" th:text="${i.name}">
</option>
</select>
</div>
</div>
<input type="submit" value="Submit Order"/>
</form>
</body>
</html>
OderDetails class:
#Data
#Entity
#RequiredArgsConstructor
#NoArgsConstructor(access=AccessLevel.PRIVATE, force=true)
public class OrderDetails {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
private String name;
private String surname;
private String room;
#OneToOne
private final NewOrder order;
#ManyToOne
private Company company;
}
I have also tried to pass NewOrder directly to POSTmethod and there add order to details, but it was still null.
Adding #RequestBody should work for null OrderDetails. Check out this for more about it: https://www.baeldung.com/spring-request-response-body
#PostMapping
public String processTaco(#RequestBody OrderDetails details) {
detailsProxy.addOrderDetails(details);
return "orderDetails";
}
In the post "Hello World" phase of my Spring journey. Creating an app that POSTS two fields which RESULT in three fields.
My controller has three fields. Two are populated on POST, and all three should populate the RESULT fields.
The Controller:
#Slf4j
#Controller
public class GreetController {
#GetMapping("/greeting")
public String greetingForm(Model model) {
model.addAttribute("greeting", new Greeting());
}
#PostMapping("/greeting")
public String greetingSubmit(#ModelAttribute Greeting greeting, Model model) {
model.addAttribute("greeting", greeting);
}
}
The Model:
public class Greeting {
//fields correspond to greeting.html
private long id;
private String content;
private String numbah;
public String getNumbah() { return numbah; }
public void setNumbah() {
this.numbah = SomeFunctions.functionOne(this.getContent());
}
public long getId() { return id; }
public void setId(long id) { this.id = id; }
public String getContent() { return content; }
public void setContent(String content) { this.content }
}
The View:
<!DOCTYPE HTML>
this is greeting.html
<html xmlns:th="https://www.thymeleaf.org">
<head>
<title>Getting Started: Handling Form Submission</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
<h1>Form</h1>
<!--th.fields correspond to fields in th.object (ie greeting.java)-->
<form action="#" th:action="#{/greeting}" th:object="${greeting}" method="post">
<p>Id: <input type="text" th:field="*{id}" /></p>
<p>Message: <input type="text" th:field="*{content}" /></p>
<p><input type="submit" value="Submit" /> <input type="reset" value="Reset" /></p>
</form>
<h1>Result</h1>
<p th:text="'id: ' + ${greeting.id}" />
<p th:text="'content: ' + ${greeting.content}" />
<p th:text="'numbah: ' + ${greeting.numbah}" />
Submit another message
</body>
</html>
Note:
The ${greeting.numbah} field, as configured above, is resulting in null. I had a log statement in that function that never returned anything, indicating that the function in the model is never firing. However, when the view was configured like this...
<body>
<h1>Form</h1>
<!--th.fields correspond to fields in th.object (ie greeting.java)-->
<form action="#" th:action="#{/greeting}" th:object="${greeting}" method="post">
<p>Id: <input type="text" th:field="*{id}" /></p>
<p>Message: <input type="text" th:field="*{content}" /></p>
<p>Some Number: <input type="text" th:field="*{numbah}"></p>
<p><input type="submit" value="Submit" /> <input type="reset" value="Reset" /></p>
</form>
<h1>Result</h1>
<p th:text="'id: ' + ${greeting.id}" />
<p th:text="'content: ' + ${greeting.content}" />
<p th:text="'numbah: ' + ${greeting.numbah}" />
Submit another message
</body>
...the field was populating, so the function itself....functions.
Long short, what I'm attempting to do here is take id and content, do someFunction(content)=numbah and return id, content, and numbah.
Thank you in advance.
It always gets down to something simple, doesn't it?
There was a typo in the setNumbah constructor in the model.
This is why I hardly ever post on sites like this: because you almost always figure out what you did wrong if you just sleep on it and have another look.
Thanks for checking this out and apologies that it's not a "high quality" problem/answer. Will delete if that's the protocol for a self-answered question.
Spring Boot 2.5, Thymeleaf
I need when click submit to pass object Product and additional extra param (quantity)
html template:
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<title th:text="${appName}">Category template title</title>
<link th:href="#{/public/style.css}" rel="stylesheet"/>
<meta charset="UTF-8"/>
</head>
<body>
<div class="container">
<h3 th:text="*{title}"/>
<form method="post" action="#" th:object="${product}" th:action="#{/product}">
<input type="hidden" id="id" th:field="*{id}"/>
<input type="text" placeholder="Name" id="name" th:field="*{name}" th:disabled="${isView}"/>
<input type="hidden" id="created" th:field="*{created}"/>
<textarea placeholder="Description" rows="5" id="description"
th:field="*{description}" th:disabled="${isView}"></textarea>
<input type="number" placeholder="Price" id="price" th:field="*{price}" th:disabled="${isView}"/>
<input type="text" placeholder="Currency" id="currency" th:field="*{currency}" th:disabled="${isView}"/>
<input type="text" placeholder="Images URL(separate by comma)" id="images" th:field="*{images}" th:disabled="${isView}"/>
<input th:type="${isView} ? hidden : submit" value="Submit"/>
</form>
</div>
</body>
</html>
and here my controller:
#RequestMapping("cart/add")
public String addProduct(Model model) {
logger.info("addProduct");
model.addAttribute("isAdd", true);
model.addAttribute("product", new Product());
model.addAttribute("title", "Add Product");
model.addAttribute("viewMode", ViewMode.ADD);
return "product";
}
#PostMapping(value = "/product")
public String submitProduct(Product product, Model model) {
logger.info("submitProduct = " + product);
if (product.getId() == 0) { // add category
product.setCreated(new Date());
} else { // update category
product.setUpdated(new Date());
}
return "redirect:/cart";
}
So when click button Submit call submitProduct with fill object Product. But I need to pass extra param (as second param in method submitProduct) - quantity.
How I can pass this extra int param from html to controller?
One option is to access the value directly from the request parameters.
Assuming the quantity value is available in the form as an input field, with a name of quantity (looks like it is not there at the moment), then you can alter your controller to use this:
import org.springframework.web.bind.annotation.RequestParam;
And then change the relevant method signature to something like this:
public String submitProduct(Product product, Model model,
#RequestParam(name = "quantity") String quantity) {...}
(Field validation of some kind would also be needed, I assume.)
I have a simple snippet of form like:
<form th:action="#{'/save'}" th:object="${account}" method="post">
<div class="form-group">
<label for="expirationDate">Expiration date</label>
<input type="datetime-local" class="form-control" id="expirationDate"
placeholder="Expiration date" th:field="*{expirationTime}"/>
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
I'm passing there a filled object account and expirationTime is a LocalDateTime field. The problem is that the expirationTime is not bind with the value passed to the form (object which is passed is 100% correct).
Any idea why?
Edit: Simply put, Spring/Thymeleaf doesn't format a Java 8 date correctly for the datetime-local input type. Tell Spring how to format the value correctly with #DateTimeFormat(pattern = "yyyy-MM-dd'T'HH:mm").
The annotation #DateTimeFormat tells Thymeleaf how to format the date string when parsing/formatting. That includes producing the value= annotation in the HTML input, and reading in POST data submitted by the form. The datetime-local input type expects a value formatted yyyy-MM-dd'T'HH:mm, so we use that as the formatter in the model class.
Model Class:
public class DateContainer {
private String name;
#DateTimeFormat(pattern = "yyyy-MM-dd'T'HH:mm")
private LocalDateTime dateTime;
public LocalDateTime getDateTime() {
return dateTime;
}
public void setDateTime(LocalDateTime dateTime) {
this.dateTime = dateTime;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Controller:
#RequestMapping("/dateTest")
public String dateTest(final DateContainer dateContainer) {
if (dateContainer.getDateTime() == null) {
dateContainer.setDateTime(LocalDateTime.now());
}
return "dateTest";
}
Template:
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org/">
<head></head>
<body>
<h1>Hello World!</h1>
<form th:action="#{/dateTest}" th:object="${dateContainer}">
<label>Name: </label><input type="text" th:field="*{name}"/>
<label>Date Time: </label><input type="datetime-local" th:field="*{dateTime}"/>
<input type="submit" value="Submit"/>
</form>
</body>
</html>
HTML Produced:
<!DOCTYPE html>
<html>
<head></head>
<body>
<h1>Hello World!</h1>
<form action="/dateTest">
<label>Name: </label><input type="text" id="name" name="name" value="" />
<label>Date Time: </label><input type="datetime-local" id="dateTime" name="dateTime" value="2017-08-28T13:01" />
<input type="submit" value="Submit" />
<input type="hidden" name="_csrf" value="437b30dc-a103-44d0-b4e9-791d8de62986" /></form>
</body>
</html>
Screenshot:
Screenshot in Chrome 60
Comptibility:
The datetime-local input type is a new HTML5 type and isn't supported in all browsers. See compatibility: https://caniuse.com/#search=datetime-local
In non-compliant browsers, the datetime-local field will simply appear as a text field, and will contain the date and time with the T in between. That may lead to usability issues depending on your use case.
Make sure that you have this dependency:
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-java8time</artifactId>
<version>2.1.0.RELEASE</version>
</dependency>
After that just add the org.thymeleaf.extras.java8time.dialect.Java8TimeDialect class to the list of dialects in your TemplateEngine implementation, and you will have the #temporals object available to be used in your templates.
More details can be found here.
I am trying to create a form with 3 fields within the class LoginForm: usuario, senha, msgLogin.
I receive the fields usuário and senha from the input boxes and then I try to redirect to the same page with the same fields plus the field MsgLogin. But I've not been able to update the msgLogin field and I don't understand why.
These are the code:
HTML:
<form id="frmLogin" class="form col-md-12" action="#" th:action="#{/login}" th:object="${loginForm}" method="post">
<div class="form-group">
<label for="usuario" class="col-md-1">Usuário: </label>
<input type="text" id="usuario" placeholder="Email" th:field="*{usuario}"/>
</div>
<div class="form-group">
<label for="senha" class="col-md-1">Senha: </label>
<input type="password" id="senha" placeholder="senha" th:field="*{senha}"/>
</div>
<div class="row">
<button id="entrar">Entrar</button>
</div>
<div class="row">
<div id="msgLogin"></div>
<p th:text="${loginForm.msgLogin}" />
</div>
</form>
The Controller:
#RequestMapping("/")
public String init(#ModelAttribute LoginForm loginForm) {
Logger.getAnonymousLogger().info("Tela Inicial.");
return "home";
}
#PostMapping("/login")
public ModelAndView entrar(LoginForm loginForm) throws IOException {
Logger.getAnonymousLogger().info("Entrando no Internet Banking.");
service.login(usuario, senha);
ModelMap model = new ModelMap();
loginForm.setMsgLogin("I want to update that value!");
model.addAttribute("loginForm", loginForm);
return new ModelAndView("redirect:/", model);
}
Class using Lombok:
#Getter
#Setter
public class LoginForm {
private String usuario;
private String senha;
private String msgLogin;
}
A redirect send a 302 HTTP status back to the browser to resubmit using a new url, so it resubmits the same two fields to the new url. There's no expectation of payload data in the 302 response.
In your Controller, change the last line in your entrar method to: return new ModelAndView("/login", model);