使用Codeigniter将最后插入的记录ID插入另一个表中的数组中

Question

so I got two tables one called patients and another called tests , the tests table has the patient id , i have a page called add patient which have fields for adding new patient information and other fields for adding their test info and upload all the data into the two tables in one query ,tests fields could be duplicated by ajax to i could add more than one test to the same patient , now i wanna add more than one test at the same time into the tests table and i managed to do so but the case is i can't add the patient_id into tests table, i wanna add the same patient_id more than one time to all the tests i have added while adding a new patient in that page, i'm new to Codeigniter! this is the adding page

the patient fields and the test fields

<input type="text" name="patientname" />
<input type="text" name="address" />

<input type="text" name="testname[]"/>
<input type="text" name="price[]" />

and this is my controller

public function testbby
{
    $this->load->model("khmodel", "Khmodel");

    // patient main info
    $patient_input_data = array();
    $patient_input_data['patientname'] = $this->input->post('patientname');
    $patient_input_data['address'] = $this->input->post('address');

    //test data
    $testname = $this->input->post('testname[]');
    $price = $this->input->post('price[]');

    $test_input_data = array();
    for ($i = 0; $i < count($testname); $i ++ )
    {
        $test_input_data[$i] = array(
            'testname' => $testname[$i],
            'price' => $price[$i],
        );
    }
    $this->Khmodel->insert_bby($patient_input_data, $test_input_data);

    redirect('main/dashboard');
}

and this is my model

public function insert_bby($patient, $test)
{
    $this->db->insert('patients', $patient);
    $patient_id = $this->db->insert_id();

    // i used this and it worked but only while adding one test , s
    //once it's gonna be an array i dunno what to do with the id !
    //$test['refpatient']=$patient_id;
    $this->db->insert_batch('tests', $test);

    return $insert_id = $this->db->insert_id();
}

Answer 1

the value i mean , i dont know but your code seems to be so right and logical but i have tried this code and it worked so well , i didn't even use the model/

 public function testbby
{
$this->load->model("khmodel", "Khmodel");

// patient main info
$patient_input_data = array();
$patient_input_data['patientname'] = $this->input->post('patientname');
$patient_input_data['address'] = $this->input->post('address');

//test data
$testname = $this->input->post('testname[]');
$price = $this->input->post('price[]');

    $this->db->reset_query();
    $this->db->insert('patients', $patient_input_data);
    $patient_id=$this->db->insert_id();
$test_input_data = array();
for ($i = 0; $i < count($testname); $i ++ )
{
    $test_input_data[] = array(
        'testname' => $testname[$i],
        'price' => $price[$i],
        'patient_id'=>$patient_id

    );
}
  $this->db->reset_query();
  $this->db->insert_batch('tbl_tests',$test_input_data);
   redirect('main/dashboard');
   }