How do I display the number of clients that placed an order for a particular product?

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How do I display the number of clients that placed an order for a particular product?

I'm a beginner in java and I want to display the number of clients that placed an order for a particular product on my MVC WebApp. I came up with a logical way of doing this but I stumbled upon a dead end.

What I have tried:

Here's what I tried to do. Any help would be greatly appreciated.

MY CONTROLLER

Java

@GetMapping("/produtos-crud/produtos-da-categoria-admin/{id}")
 public String Home15(Model model,  @PathVariable("id") int id, HttpServletRequest request, @Valid User user) {
            
    HttpSession session = request.getSession(false);
    if (session != null) {
        for(User user_:userRepository.verify(session.getAttribute("email"), 
        session.getAttribute("password"))) {
                
      model.addAttribute("num_clients",orderRepository.countClientById(?)); //'?' <- All I need is this value
    





                //These codes are not relevant. Please ignore.
                //For originality purpose
                model.addAttribute("num", productRepository.countProductById(id) + " Produtos");
                model.addAttribute("users_cat", categoryRepository.findById(id));
                model.addAttribute("name", user_.getName());
                model.addAttribute("users", productRepository.findProductByCategoryId(id));
                
                }
            }
            else {
                
                return "redirect:/index";
                
            }
            
            
            return "/produtos-crud/produtos-da-categoria-admin";

MY REPOSITORY

Java

public interface OrderRepository extends CrudRepository<Pedido, Integer> {

@Query(value = "SELECT COUNT(client) FROM order WHERE product = ?;", nativeQuery = true)
    int countClientById(int ?); //Feel free to set a variable

}

MY HTML FILE

HTML

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Category Items</title>
<meta content="Dashboard" property="og:title">
<meta content="Dashboard" property="twitter:title">
<meta content="width=device-width, initial-scale=1" name="viewport">
<meta content="Webflow" name="generator">
<link href="css/normalize.css" rel="stylesheet" type="text/css">
<link href="css/webflow.css" rel="stylesheet" type="text/css">
<link href="css/ui-login-teste.webflow.css" rel="stylesheet" type="text/css">
</head>

<body>

   <!-- Irrelevant codes have been removed for to shorten code--> 

  <div class="valida-table-field estatuto">
     <div th:text="${num_clients}">14</div> <!-- Main focus -->
  </div>

</body>
</html>

Posted 8-Feb-21 22:10pm

El,sha Destino

Updated 9-Feb-21 22:13pm

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Comments

CHill60 9-Feb-21 7:49am

Define "a dead end" - what actually happened (or didn't happen that you wanted to)

El,sha Destino 9-Feb-21 8:55am

well, I cant seem to find a logical way to set the "value" required in My Controller. @CHill60

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