Resolved: Springboot-JPA-Thymeleaf -Bootstrap. How do I refresh a filtered table contents after updating a field using a Modal form

@RequestMapping(method = RequestMethod.GET)
public String listProjects(Model model){
    model.addAttribute("projects", this.projectService.getProjects());
    return "my-projects";
}

@RequestMapping (value = "/getAssignmentsByProjectId", method = {RequestMethod.GET})
public String getAssignmentsById(Model model, Long id) {
    model.addAttribute("header", "Assignments for Project - " + this.projectService.getProjectNameById(id));
    model.addAttribute("assignments", this.assignmentService.getAssignmentsByProjectId(id));
    return "project-assignments";
}

@RequestMapping("/getAssignmentById")
@ResponseBody
public Assignment getAssignmentById(Long id) {
    Assignment assignment = this.assignmentService.getAssignmentById(id);
    return assignment;
}

@RequestMapping("/updateAssignment")
public String getAssignmentById(Long id, Double rate){
    this.assignmentService.updateAssignmentById(id,rate);
    return "project-assignments";
}

@RequestMapping("/updateAssignment")
public String getAssignmentById(Long id, Double rate){
    this.assignmentService.updateAssignmentById(id,rate);
    return "project-assignments";
}

@PostMapping("/updateAssignment")
public String updateAssignmentById(Long id, Double rate){
    this.assignmentService.updateAssignmentById(id,rate);
    return "redirect:/getAssignmentsByProjectId?id=" + id;
}