Add invalid_message configuration option

DependencyInjection/Configuration.php

@@ -31,6 +31,7 @@ class Configuration implements ConfigurationInterface
                 ->scalarNode('gc_freq')->defaultValue(100)->end()
                 ->scalarNode('expiration')->defaultValue(60)->end()
                 ->scalarNode('quality')->defaultValue(15)->end()
+                ->scalarNode('invalid_message')->defaultValue('Bad code value')->end()
             ->end()
         ;
         return $treeBuilder;

README.md

@@ -125,6 +125,7 @@ You can define the following type option :
 * **web_path**: absolute path to public web folder (default="%kernel.root_dir%/../web")
 * **gc_freq**: frequency of garbage collection in fractions of 1 (default=100)
 * **expiration**: maximum lifetime of captcha image files in minutes (default=60)
+* **invalid_message**: error message displayed when an non-matching code is submitted (default="Bad code value")
 
 Example :
 

Type/CaptchaType.php

@@ -47,7 +47,7 @@ class CaptchaType extends AbstractType
         $this->key = $builder->getForm()->getName();
 
         $builder->addValidator(
-            new CaptchaValidator($this->session, $this->key)
+            new CaptchaValidator($this->session, $this->key, $options['invalid_message'])
         );
     }
 

Validator/CaptchaValidator.php

@@ -24,10 +24,16 @@ class CaptchaValidator implements FormValidatorInterface
      */
     private $key;
 
-    public function __construct(Session $session, $key)
+    /**
+     * Error message text for non-matching submissions
+     */
+    private $invalidMessage;
+
+    public function __construct(Session $session, $key, $invalidMessage)
     {
         $this->session = $session;
         $this->key = $key;
+        $this->invalidMessage = $invalidMessage;
     }
 
     public function validate(FormInterface $form)
@@ -37,7 +43,7 @@ class CaptchaValidator implements FormValidatorInterface
 
         if (!($code && $excepted_code && is_string($code) && is_string($excepted_code)
             && $this->niceize($code) == $this->niceize($excepted_code))) {
-            $form->addError(new FormError('Bad code value'));
+            $form->addError(new FormError($this->invalidMessage));
         }
 
         $this->session->remove($this->key);