Как прикрепить идентификатор из другой таблицы, используя php pdo в jsgrid?

Question

У меня есть таблица предписаний в mysql, использующая php-pdo и jsgrid, и я хочу знать, как я могу получить Patient_id моей таблицы пациентов и вставить ее в таблицу предписаний. Я попытался добавить микс инициализировать Patient_id с помощью PHP MySQL, но он не работает, единственный способ, которым я могу получить Patient_id, это сделать кнопку. но требования в том, что на странице Patient_id уже есть и только получить и вставить в базу данных. извините за мой плохой английский

это мой код

$(function () {

      "use strict";
      $.ajax({
            type: "GET",
            url: "action/fetch_medicine.php"
      }).done(function (medicine) {

            medicine.unshift({
                  medicine_id: "0",
                  medicine_name: ""
            });


                  $('#grid_table').jsGrid({

                        width: "100%",
                        height: "460px",

                        filtering: true,
                        inserting: true,
                        editing: true,
                        sorting: true,
                        paging: true,
                        autoload: true,
                        pageSize: 10,
                        pageButtonCount: 5,
                        deleteConfirm: "Do you really want to delete data?",

                        controller: {
                              loadData: function (filter) {
                                    return $.ajax({
                                          type: "GET",
                                          url: "action/fetch_data.php",
                                          data: filter
                                    });
                              },
                              insertItem: function (item) {
                                    return $.ajax({
                                          type: "POST",
                                          url: "action/fetch_data.php",
                                          data: item
                                    });
                              },
                              updateItem: function (item) {
                                    return $.ajax({
                                          type: "PUT",
                                          url: "action/fetch_data.php",
                                          data: item
                                    });
                              },
                              deleteItem: function (item) {
                                    return $.ajax({
                                          type: "DELETE",
                                          url: "action/fetch_data.php",
                                          data: item
                                    });
                              }
                        },

                        fields: [
                              {
                                    name: "id",
                                    type: "hidden",
                                    css: 'hide'
                              },
                              {
     //not working        ----->    name: "patient_id",
                                    type: "hidden",
                                    css: 'hide',
                                    valueField: "patient_id",
                                    textField: "patient_id"
                              },
                              {
                                    name: "date_time",
                                    type: "hidden",
                                    css: 'hide',
                                    valueField: "date_time",
                                    textField: "date_time"
                              },
                              {
                                    name: "medicine",
                                    title: "Medicine",
                                    type: "select",
                                    width: 100,
                                    items: medicine,
                                    valueField: "medicine_name",
                                    textField: "medicine_name"
                              },
                              {
                                    name: "breakfast",
                                    type: "text",
                                    width: 50,
                                    validate: "required"
                              },
                              {
                                    name: "lunch",
                                    type: "text",
                                    width: 50,
                                    validate: "required"
                              },
                              {
                                    name: "dinner",
                                    type: "text",
                                    width: 50,
                                    validate: function (value) {
                                          if (value > 0) {
                                                return true;
                                          }
                                    }
                              },
                              {
                                    type: "control",
                                    modeSwitchButton: true,
                                    editButton: true
                }
                ]

                  });

      });

});

это мой php код

<?php

//fetch_data.php

$connect = new PDO("mysql:host=localhost;dbname=testing", "root", "");

$method = $_SERVER['REQUEST_METHOD'];

if($method == 'GET')
{
 $data = array(
  ':date_time'   => "%" . $_GET['date_time'] . "%",
  ':medicine'   => "%" . $_GET['medicine'] . "%",
  ':breakfast'   => "%" . $_GET['breakfast'] . "%",
  ':lunch'     => "%" . $_GET['lunch'] . "%",
  ':dinner'    => "%" . $_GET['dinner'] . "%"
 );
 $query = "SELECT * FROM consultation WHERE date_time LIKE :date_time AND  medicine LIKE :medicine AND breakfast LIKE :breakfast AND lunch LIKE :lunch AND dinner LIKE :dinner ORDER BY consultation_id DESC";

 $statement = $connect->prepare($query);
 $statement->execute($data);
 $result = $statement->fetchAll();
 foreach($result as $row)
 {
  $output[] = array(
   'consultation_id'    => $row['consultation_id'],   
   'patient_id'    => $row['patient_id'],   
   'date_time'  => $row['date_time'],
   'medicine'  => $row['medicine'],
   'breakfast'   => $row['breakfast'],
   'lunch'    => $row['lunch'],
   'dinner'   => $row['dinner']
  );
 }
 header("Content-Type: application/json");
 echo json_encode($output);
}

if($method == "POST")
{
date_default_timezone_set('Asia/Manila');   
$date_time=date("F j, Y - g:i a");
$date=date("F j, Y");

 $data = array(
  ':patient_id'  => $_POST['patient_id'],
  ':date_time'  => $date_time,
  ':medicine'  => $_POST['medicine'],
  ':breakfast'  => $_POST["breakfast"],
  ':lunch'    => $_POST["lunch"],
  ':dinner'   => $_POST["dinner"]
 );

 $query = "INSERT INTO consultation (patient_id, date_time, medicine, breakfast, lunch, dinner) VALUES (:patient_id, :date_time, :medicine, :breakfast, :lunch, :dinner)";
 $statement = $connect->prepare($query);
 $statement->execute($data);
}

if($method == 'PUT')
{
 parse_str(file_get_contents("php://input"), $_PUT);

date_default_timezone_set('Asia/Manila');   
$date_time=date("F j, Y - g:i a");
$date=date("F j, Y");

 $data = array(
  ':consultation_id'   => $_PUT['consultation_id'],
  ':date_time'  => $date_time,
  ':medicine' => $_PUT['medicine'],
  ':breakfast' => $_PUT['breakfast'],
  ':lunch'   => $_PUT['lunch'],
  ':dinner'  => $_PUT['dinner']
 );

 $query = "UPDATE consultation 
 SET  date_time = :date_time, 
 medicine = :medicine, 
 breakfast = :breakfast, 
 lunch = :lunch, 
 dinner = :dinner 
 WHERE consultation_id = :consultation_id
 ";
 $statement = $connect->prepare($query);
 $statement->execute($data);
}

if($method == "DELETE")
{
 parse_str(file_get_contents("php://input"), $_DELETE);
 $query = "DELETE FROM consultation WHERE consultation_id = '".$_DELETE["consultation_id"]."'";
 $statement = $connect->prepare($query);
 $statement->execute();
}

?>