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Handling errors

Errors could occur during the form processing. When an error occur, LemonStand places its message to the internal variable. You canuse the flash_message function to display error messages. Usually you place the flash_message function call above forms.

The following example demonstrates the Change Password page.

<h2>Change Password</h2>
<?= open_form() ?>
        <?= flash_message() ?>
        <label for="old_password">Old Password</label>
        <input id="old_password" type="password" name="old_password"/><br/>
        
        <label for="password">New Password</label>
        <input id="password" type="password" name="password"/><br/>
        
        <label for="password_confirm">Password Confirmation</label>
        <input id="password_confirm" type="password" name="password_confirm"/><br/>
        
        <input type="submit" name="change_password" value="Submit"/>
        <input type="hidden" name="redirect" value="/password_change_success"/>
</form>

If you process forms in AJAX mode, you do not need to use the flash_message function, because AJAX errors are displayed using the popup messages (JavaScript alert messages).

See also:

• flash_message function

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