Wsrtjtyk

I am working on MVC Java project and am using Spring Boot with ThymeLeaf. The issue I have is, that when creating a Task, I want to select and save a User, that will be assign to the task. I managed to do the selection correctly, but am unable to save the selected user. It always saves without the User assigned.

Here is my Task entity class:

@Entity

public class Task extends BaseEntity {



    private String name;



    private String description;



    private Date dateOfCreation;



    @DateTimeFormat(pattern = "yyyy-MM-dd")

    private Date dueDate;



    @ManyToOne

    private User assignee;



    public Task() {

        this.dateOfCreation = new Date(System.currentTimeMillis());

    }

}

My User entity is as follows:

@Entity

public class User extends BaseEntity {



    private String username;



    private String password;



    @OneToMany(mappedBy = "assignee")

    private List<Task> assignedTasks;

}

Where BaseEntity contains

@Id

@GeneratedValue(strategy = GenerationType.AUTO)

private Integer id;



@Version

private Integer version;

My controller function, that is responsible for my taskform.html is:

@RequestMapping("/new")

public String newTask(Model model){

    model.addAttribute("task", new Task());

    model.addAttribute("users", userService.getAllUsers());

    return "task/taskform";

}

And my taskform.html looks like this:

<form class="form-horizontal" th:object="${task}" th:action="@{/task}" method="post">

    <input type="hidden" th:field="*{id}"/>

    <input type="hidden" th:field="*{version}"/>

    <div class="form-group">

        <label class="col-sm-2 control-label">Name:</label>

        <div class="col-sm-10">

            <input type="text" class="form-control" th:field="*{name}"/>

        </div>

    </div>



    <div class="form-group">

        <label class="col-sm-2 control-label">Description:</label>

        <div class="col-sm-10">

            <input type="text" class="form-control" th:field="*{description}"/>

        </div>

    </div>



    <div class="form-group">

        <label class="col-sm-2 control-label">Description:</label>

        <div class="col-sm-10">

            <input type="date" th:value="*{dueDate}" th:field="*{dueDate}" id="dueDate" />

        </div>

    </div>



    <div class="form-group">

        <label class="col-sm-2 control-label">Select user:</label>

        <div class="col-sm-10">

            <select class="form-control">

                <option th:field="*{assignee}" th:each="assignee : ${users}" th:value="${assignee}" th:text="${assignee.username}">

                </option>

            </select>

         </div>

    </div>



    <div class="row">

        <button type="submit" class="btn btn-default">Submit</button>

    </div>

I am trying to pass the object from users list as the value, but it does not work Any idea, how to do it?

Showing the users works as expected:

Working frontend

Null is being assigned to assignee column, where the user should be assigned.

Null in H2 Database

EDIT

Here is my POST method from Task Controller:

@RequestMapping(method = RequestMethod.POST)

public String saveOrUpdate(Task task){

    taskService.persistTask(task);

    return "redirect:/task/list";

}