Symfony - 如何从视图中的select html标记中获取数据

Question

I am learning Symfony so I am testing various ways to work with database. The idea is to make select dropdown list that contains data from table in database. Each option in select returns value that is id of column from table. Dropdown list is defined in View in this way ('find_res' in action is route to controller):

<form action="{{ path('find_res') }}" method="POST" name="formpt">
       <select name="patientId">
        {% for patient in patients %}       
           {{dump(patient)}}
           <option value="{{patient.id}}">{{patient.lastname}}{{patient.firstname}}</option><br />
        {% endfor %}
      </select>   
  <button type="submit" name="submit">Find results</button>
  </form>

so that for chosen patient.id it should show results in table which is defined in code bellow this as standard html table.

In controller method I created list of all patients from table in database and sent it as parameter to this view. And that works just fine. Also, I would not get into details how query is built because the problem is that any $request I try does not return anything, just null. I tried:

$request->request->get('patientId'); //returns null always
$request->get('patientId'); //also null

I even tried to give name to form in view like for instance 'formpt' and then tried it with:

$request->request->get('formpt')['patientId'];

still nothing. This test code:

if($request->getMethod() == 'POST'  ) {
        \Doctrine\Common\Util\Debug::dump($request->request->get('patientId'));
        exit;
  }

always returns NULL or string(0) "" for whatever I put in "dump".

What I am doing wrong? Thanks!

Answer 1

Maybe try this

For mapped field

public function yourAction(Request $request){
        $patient = new Patient();
        $form = $this->createForm('AppBundle\Form\PatientType', $patient);
        $form->handleRequest($request);

        if ($form->isSubmitted())
        {
         $patientId = $patient->getId();
        }
}

If you need to get a non mapped field (field that's not a Patient property)

public function yourAction(Request $request){
            $patient = new Patient();
            $form = $this->createForm('AppBundle\Form\PatientType', $patient);
            $form->handleRequest($request);

            if ($form->isSubmitted())
            {
             $patientCustomField = $form['customField']->getData();
            }
    }