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Listing 10-21. A Single Action to Display and Handle the Form, in modules/contact/actions/ actions.class.php class ContactActions extends sfActions { public function executeSend() { if ($this->getRequest()->getMethod() != sfRequest::POST) { // Prepare data for the template // Display the form return sfView::SUCCESS; } else { // Handle the form submission ... $this->redirect('mymodule/anotheraction'); } } public function handleErrorSend() { // Prepare data for the template // Display the form return sfView::SUCCESS; } } The logic necessary to prepare the data can be refactored into a protected method of the action class, to avoid repeating it in the executeSend() and handleErrorSend() methods. With this new configuration, when the user types an invalid name, the form is displayed again, but the entered data is lost and no error message explains the reason of the failure. To address the last issue, you must modify the template that displays the form, to insert error messages close to the faulty field.

On one hand, you can offer any number of Amazon s products. On the other hand, your readers can do business with a trusted online retailer.

The error messages defined as validator parameters are added to the request when a field fails validation (just as you can add an error manually with the setError() method, as in Listing 10-18). The sfRequest object provides two useful methods to retrieve the error message: hasError() and getError(), which each expect a field name as parameter. In addition, you can display an alert at the top of the form to draw attention to the fact that one or many of the fields contain invalid data with the hasErrors() method. Listings 10-22 and 10-23 demonstrate how to use these methods.

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And if the player s friend doesn t already have your game installed on his handset, it s an opportunity rather than a setback It s easy to write a little utility that steps the user through the process of sending a text SMS to his friend containing a link to where the friend can download your game To send a message to the phone s standard inbox (instead of to an application), all you need to do is leave off the port number in the sending URL Whether you want to write to the user s contact list or just read from it, you ll need the user s permission (See the next chapter for more on permissions.

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Listing 10-22. Displaying Error Messages at the Top of the Form, in templates/indexSuccess.php < php if ($sf_request->hasErrors()): > <p>The data you entered seems to be incorrect. Please correct the following errors and resubmit:</p> <ul> < php foreach($sf_request->getErrors() as $name => $error): > <li>< php echo $name >: < php echo $error ></li> < php endforeach; > </ul> < php endif; > Listing 10-23. Displaying Error Messages Inside the Form, in templates/indexSuccess.php < php echo form_tag('contact/send') > < php if ($sf_request->hasError('name')): > < php echo $sf_request->getError('name') > <br /> < php endif; > Name: < php echo input_tag('name') ><br /> ... < php echo submit_tag() > </form> The conditional use of the getError() method in Listing 10-23 is a bit long to write. That s why symfony offers a form_error() helper to replace it, provided that you declare the use of its helper group, Validation. Listing 10-24 replaces Listing 10-23 by using this helper. Listing 10-24. Displaying Error Messages Inside the Form, the Short Way < php use_helper('Validation') > < php echo form_tag('contact/send') > < php echo form_error('name') ><br /> Name: < php echo input_tag('name') ><br /> ... < php echo submit_tag() > </form> The form_error() helper adds a special character before and after each error message to make the messages more visible. By default, the character is an arrow pointing down (corresponding to the ↓ entity), but you can change it in the settings.yml file: all: .settings: validation_error_prefix: validation_error_suffix:

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