How to retrieve the value from Drop down list into the Controller in Yii?

Question

I have a div inside a form but I'm not quite sure how to retrieve the chosen value into the controller:

<?php $form=$this->beginWidget('CActiveForm', array(
'id'=>'system-users-form',
'enableAjaxValidation'=>false,
)); ?>

<p class="note">Fields with <span class="required">*</span> are required.</p>

<?php echo $form->errorSummary($model); ?>

<button id="abutton">Already a Supplier</button>
<br>
&nbsp;
&nbsp;

<div class="row" id="toshow" style="display:none" name="suppliers"> 
<?php $supplier = SupplierHead::model()->findAll();
   $list = CHtml::listData($supplier ,'head_id','head_name'); 
   echo $form->DropDownList($model,'party_id', 
   $list, array('prompt'=>'Select Supplier')); 
?> 
</div>



<script>
$(document).ready(function() {
   $("#abutton").click(function(e){
      e.preventDefault();
      $("#toshow").css('display', 'block');
   });
});
</script>

<div class="row">
    <?php echo $form->labelEx($model,'username'); ?>
    <?php echo $form->textField($model,'username',array('size'=>60,'maxlength'=>200)); ?>
    <?php echo $form->error($model,'username'); ?>
</div>

<div class="row">
    <?php echo $form->labelEx($model,'password'); ?>
    <?php echo $form->passwordField($model,'password',array('size'=>60,'maxlength'=>255)); ?>
    <?php echo $form->error($model,'password'); ?>
</div>

<div class="row buttons">
    <?php echo CHtml::submitButton($model->isNewRecord ? 'Create' : 'Save'); ?>
</div>

<?php $this->endWidget(); ?>

</div><!-- form -->

Note that this row also belongs to another model. How would I retrieve this inside another controller?

Controller Code:

 public function actionCreate()
    {
        $model = new SystemUsers;
        $modelParties = new Parties;
        $modelPersons = new Persons;
        $supplierHead = new SupplierHead;
    //  $modelPR = new PartyRoles;
// Uncomment the following line if AJAX validation is needed
// $this->performAjaxValidation($invoice);

if (isset($_POST['SystemUsers']))
    {
        $model->attributes = $_POST['SystemUsers'];
        Yii::app()->db->createCommand("insert into parties (party_type_id) values ('1')")->execute();           
        $id = Yii::app()->db->lastInsertId;

        $_POST["SupplierHead"]["party_id"];
        $model->password = md5($model->password);
        $model->party_id = $id;
        $model->status = "Approved";
        $model->date_modified = new CDbExpression('NOW()');
        $email = $model->username;
        if($company != null)
            {

                Yii::app()->db->createCommand("insert into persons (party_id,email,company_name) values ('".$id."','".$email."','".$company."')")->execute();
            }
        Yii::app()->db->createCommand("insert into persons (party_id,email) values ('".$id."','".$email."')")->execute();
        Yii::app()->db->createCommand("insert into party_roles(party_id,role_id) values ('".$id."','2')")->execute();
  /*
        $valid = true; 
        $valid &= $model->validate(); 
        $valid &= $modelParties->validate(); 
              if($valid)
                {   
        $modelParties->save();
        $model->party_id = $modelParties->getPrimaryKey();  */

        if($model->save())
            echo ("<SCRIPT LANGUAGE='JavaScript'>
                    window.alert('User Created')
                    window.location.href='create';  
                </SCRIPT>");

//      }
        else $this->redirect(array('views22','id'=>$model->id));
 }

$this->render('create',array(
  'parties'=>$modelParties,
  'model'=>$model,
));

}

Model for SystemUsers:

public function tableName()
{
    return 'system_users';
}

/**
 * @return array validation rules for model attributes.
 */
public function rules()
{
    // NOTE: you should only define rules for those attributes that
    // will receive user inputs.
    return array(
        array('username, password', 'required'),
        array('isLogin', 'numerical', 'integerOnly'=>true),
        array('date_modified','default',
          'value'=>new CDbExpression('NOW()'),
          ),
        array('date_last_login','default',
          'value'=>new CDbExpression('NOW()'),
          ),
        array('date_created','default',
          'value'=>new CDbExpression('NOW()'),
          ),
        array('status','default','value'=>'Approved'),
        array('user_role','default','value'=>'MEMBER'),
        array('isLogin','default','value'=>'1'),

        array('username', 'length', 'max'=>200),
        array('password', 'length', 'max'=>255),
        // The following rule is used by search().
        // Please remove those attributes that should not be searched.
    );
}

EDIT

I added my model and the rest of the form to show you the confusion. The dropdown list div is value i'm trying to input into a different model and it does not exist as an attribute for system_users so It's not going through the POST.

Answer 1

First make sure that your model's attribute has a safe rule. Second, in controller get a dump to see what have been sent via POST request. Do like below:

CVarDumper::dump($_POST,5678,true);
Yii::app()->end();

Third, find your dropdown element in the dump you have. In Yii, You can also get a post value like below:

Yii::app()->request->getPost('YOUR DROPDOWN NAME');

UPDATE

As I said first, You must make sure that your attribute is safe. In your model add a rule like below:

array('THE NAME OF YOUR DROPDOWN','safe'),

I hope it helps.

Answer 2

@charlesisjan this depends on debugging also. Actually $_POST is an array with a collection of arrays, and further these arrays are a collection of key value pairs like

array(
    'key'=>'value'
)

First you need to ensure whether party_id is being submitted in the form. I am sure it is being submitted.
Now after

if (isset($_POST['SystemUsers']))
    {

use

CVarDumper::Dump($_POST,100,true);
die();

I am using a dummy code. it will show you the $_POST array like

array ( 'User' => array ( 'username' => 'rafasd' 'password' => 'asdfas' 'email' => 'asd@yahoo.com' ) 'yt0' => '' )

in above code as user is itself an array so u can access the username as

$_POST['User']['username']

Now try to find out where does party_id is located in the $_POST array. When u find that u can access its value using above mentioned pattern

Answer 3

you can get as :

 $id =  $_POST["SystemUsers"]["party_id"]

As per your code, drop-down name will be set as "Model_name[Field_name]".

In your action, you can see the line

$some_variable  = $_POST["SystemUsers"]; // SystemUsers is model name

Answer 4

Please change your

 $_POST["SupplierHead"]["party_id"];

with this

 $_POST["SystemUsers"]["party_id"];

in your controller action create,I think error is here! Also if party_id is Your primary key then don't use in drop down, create new public variable in your model and use here in drop down.