Display Exception error message in Zend Form - Zend Framework 2

exception, zend-form, zend-framework2

Solution

Given your example, a way to do it would be this. However i suggest you read yourself into the inbuilt validators Db\RecordExists and Db\RecordNoExists, as they may already do what you're trying to do.

public function addAction() 
{
     $form = $this->getForm(); //theoretical

     try {
         $records->validateDuplicateRecords($recordTitle);
     } catch (\Exception $e) {
         $form->setMessages(array(
             'recordTitle' => array($e->getMessage())
         ));
         return new ViewModel(array(
             'form' => $form
         ));
     }

     if ($form->isValid()) { 
         //usual stuff
     }
}

With this code you'd attach the error message onto your `title`-FormElement, be sure to edit the name into the name of your title element.

Problem

I wanted to display a simple exception message in zend form which is thrown by an exception. I check whether there is a duplicate record existing in the database and if exits then I want to throw an error saying the the record with that name already exists in the database. This I wanted to show in the add.phtml file exactly after the record name textfield. This is how I am trying to do: In my Controller: ``` public function addAction() { try { $records->validateDuplicateRecords($recordTitle); if ($form->isValid()) { //doing all the stuff like saving data to database } } catch (\Exception $e) { echo $e->getMessage(); //Not sure with this part } } ``` And the class where I am checking for duplicate records: records.php ``` public function validateDuplicateRecords($recordTitle) { //fetching all titles from database //comparing with $recordTitle using foreach and if //all these here in the loop works, I am giving the skeleton of my code foreach($records as $record) { if($record == $recordTitle) { throw new \Exception("Record with title '$recordTitle' already exists"); } return true; } } ``` So that is basically how im doing, I know how this try and catch works with pure php stuff, but I don't know how I can use the exceptions with Zend Framework 2 and zend forms. In case if anybody has a solution for this would be glad if it can be shared. P.S. I followed the Album Module so basically my structure resembles more or less same from the official Module EDIT: add.phtml has been addded add.phtml ``` <?php $title = "Add New Record Title"; $this->headTitle($title); ?> <h2><?php echo $this->escapeHtml($title); ?></h2> <?php $form = $this->form; $form->setAttribute("action", $this->url("addRecordTitle", array('controller' => "album", 'action' => "add"))); $form->prepare(); echo $this->form()->openTag($form); echo $this->formRow($form->get('recordTitle')); echo $this->formInput($form->get('submit')); echo $this->form()->closeTag($form); ?> ```

Original source