How do i pass two objects from thymeleaf form to Spring Controller?
I want to pass two objects from thymeleaf form to a controller. Here is my thymeleaf code :
<!DOCTYPE html> <html lang='en' xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="ISO-8859-1"/> <title>Payment Page</title> </head> <body> <h1>Payment List</h1> <table> <tr> <th>StuId</th> <th>Month</th> <th>Amount</th> </tr> <tr th:each="payment:${student.payments}"> <td th:text="${student.id}">2</td> <td th:text="${payment.month}">devesh</td> <td th:text="${payment.amount}">23</td> </tr> </table> <h3>Add a Payment</h3> <form action="#" th:action= "@{/payments}" th:object="${payment}" method="POST"> <div th:object="${student}" > <label for="name">Month:</label> <input type="text" name="month" size="50"></input><br/> <label for="amount">Amount:</label> <input type="text" name="amount" size="50"></input><br/> <input type = "submit"/></form> </body> </html> in form except the payment object which is actually being submitted here , i want to pass student object or id to my controller as any payment should correspond to a particular student. i Could not find any way till now after searching a lot.
PaymentController method where i want to pass the objects , as i am using submit form , i could not pass variable in th:action
@RequestMapping(method = RequestMethod.POST, value = "/{id}/payments") public String doPayment(@ModelAttribute("payment") PaymentRecord paymentRecord, @PathVariable int id) { Student st = studentService.getStudentInfo(id); st.addPayments(paymentRecord); System.out.println("entered into do payment"); studentService.addStudent(st); paymentService.doPayment(paymentRecord); return "redirect:{id}/payments"; } Please suggest. I am stuck here
Instead of :
return "redirect:{id}/payments"; try this:
return "redirect:" + id + "/payments"; or (if need leading / in the redirect) :
return "redirect:/" + id + "/payments"; Of if you want to "GET" with multiple objs then you can something like:
@RequestMapping(value = { "/deleteuserdocument/{docid}/{userid}" }, method = RequestMethod.GET) This is from my github repo where I am "GET"ting the documentid for a specific userid. Hope this might help.
You can do this different ways.
But first, let’s shorten the post method annotation from:
@RequestMapping(method = RequestMethod.POST, value = "/{id}/payments")
to
@PostMapping("/{id}/payments")
I would also change the variable id to studentId to make it more clear for the next person reading your code.
Now, include the variable as a hidden input type within the form tags:
<input type="hidden" name="studentId" th:value="${student.id}">
Then you can either
a) Add a String studentId property to your PaymentRecord class. Then in the post method, you can call paymentRecord.getStudentId();
or
b) Add a request parameter for the studentId to your method mapped with @PostMapping. So your method signature can have @RequestParam(String studentId). In this case, the value of the studentId will be fully exposed to the user.
or
c) Use @RequestBody and map the values to a bean. You can read up on this topic further and look at some background with this question.
