Re: Preserving value in dependent select list after validation

You're doing a redirect, which effectively clears down the values in the $this->data array, which the form will look for to get previously entered data. Set $this->data to $this->Session->read('applicantdata') before you go back to the form. Should work.

Jeremy Burns
Class Outfit

jeremyburns@classoutfit.com
http://www.classoutfit.com

On 3 Sep 2010, at 05:14, aveev wrote:

> Hi, I'm new to cakephp
> I'm trying to create an applicant add form with validation..
> If validation fails, it should return to the add page with previously
> entered values.
> Here's the code snippet
> //applicant controller
> function add() {
>
> $docTypes = $this->DocumentType->find('list');
> $states = $this->State->find('list', array ('fields' => array
> ('name',
> 'name')));
> $this->set('states',$states);
> $this->set(compact('docTypes','states'));
>
> if (!empty($this->data)) {
> $this->Applicant->set($this->data);
> if($this->Applicant->validates()) {
>
> $this->Session->write('applicantdata',$this->data);
> $this->redirect(array('controller'=>'uploads','action' =>
> 'add'));
> } else {
> //grab options for select list with application id
> $this->set('errors', $this->Applicant->validationErrors);
> }
> }
> }
>
> //applicant model
> class Applicant extends AppModel {
>
> var $name = 'Applicant';
> var $validate = array('name'=>array('rule'=>'alphaNumeric',
> 'allowEmpty'=>false,'message'=>'This field is required'));
> }
>
> //applicant view
> $javascript->link('jquery/jquery-1.4.1', false);
> $javascript->link('jquery/applicants_ajax', false);
>
> echo $form->create('Applicant');
> echo $form-
>> select('document_type_id',array($docTypes),null,array('id'=>'document'),true);
> echo $form->select('application_type_id', array(),null,
> array('id'=>'application'),true );
> echo $form->input('name');
> echo $form->input('pob');
>
>
> echo $form->end('Save');
>
>
> //jquery
> //if validation fails create options for select list with id =
> application, and select value based
> //on previously entered one
>
> $('#document').change( function () {
> $.post('http://localhost/doc_apps/documents/
> ajax_search_app_type', {app_type_select: $(this).val()},function(data)
> {
> $('#application').find('option').remove().end().append('<option></
> option>');
> var obj = jQuery.parseJSON(data);
> $.each(obj, function(key, value)
> {
> $('#application').
> append($("<option></option>").
> attr("value",key).
> text(value));
> });
>
> $.each(obj, function(key, value)
> {
> var strToAdd = "<input type='hidden' value='helo'/>" ;
> $('form').append(strToAdd);
> });
>
> });
> });
>
> });
>
>
> In the form, there are 2 select lists where 1 select list depends on
> another select list (dependent select list).
> The problem is I cannot preserve the options and selected value of
> dependent select list if validation fails. The options in dependent
> select list is created using java script (jquery)
> What comes to my mind is that in jquery, I should check if validation
> fails or not. If it does, I'll make an ajax call to grab values for
> dependent select list options and select an option based on previously
> selected value.
> Or maybe anyone have another idea to solve this problem ?
> Any help would be greatly appreciated
>
> Thanks...
> CakePHP 1.2
>
> Check out the new CakePHP Questions site http://cakeqs.org and help others with their CakePHP related questions.
>
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