Adding class captcha_image on the <img> captcha tag (see #160)

Quote parameter references in services.yml

README.md

@@ -4,6 +4,8 @@ Gregwar's CaptchaBundle
 The `GregwarCaptchaBundle` adds support for a captcha form type for the
 Symfony form component.
 
+It uses [gregwar/captcha](https://github.com/Gregwar/Captcha) as captcha generator, which is a separate standalone library that can be used for none-symfony projects.
+
 Compatibility with Symfony
 ==========================
 

Resources/config/services.yml

@@ -7,17 +7,17 @@ parameters:
     
 services:
     captcha.type:
-        class: %gregwar_captcha.captcha_type.class%
+        class: '%gregwar_captcha.captcha_type.class%' 
         arguments:
             - '@session'
             - '@gregwar_captcha.generator'
             - '@translator'
-            - %gregwar_captcha.config%
+            - '%gregwar_captcha.config%'
         tags:
             - { name: form.type, alias: captcha }
 
     gregwar_captcha.generator:
-        class: %gregwar_captcha.captcha_generator.class%
+        class: '%gregwar_captcha.captcha_generator.class%'
         arguments:
             - '@router'
             - '@gregwar_captcha.captcha_builder'
@@ -25,15 +25,15 @@ services:
             - '@gregwar_captcha.image_file_handler'
 
     gregwar_captcha.image_file_handler:
-        class: %gregwar_captcha.image_file_handler.class%
+        class: '%gregwar_captcha.image_file_handler.class%'
         arguments:
-            - %gregwar_captcha.config.image_folder%
-            - %gregwar_captcha.config.web_path%
-            - %gregwar_captcha.config.gc_freq%
-            - %gregwar_captcha.config.expiration%
+            - '%gregwar_captcha.config.image_folder%'
+            - '%gregwar_captcha.config.web_path%'
+            - '%gregwar_captcha.config.gc_freq%'
+            - '%gregwar_captcha.config.expiration%'
 
     gregwar_captcha.captcha_builder:
-        class: %gregwar_captcha.captcha_builder.class%
+        class: '%gregwar_captcha.captcha_builder.class%'
 
     gregwar_captcha.phrase_builder:
-        class: %gregwar_captcha.phrase_builder.class%
+        class: '%gregwar_captcha.phrase_builder.class%'

Resources/views/captcha.html.twig

@@ -3,7 +3,7 @@
 -
 {% else %}
 {% spaceless %}
-    <img id="{{ image_id }}" src="{{ captcha_code }}" alt="" title="captcha" width="{{ captcha_width }}" height="{{ captcha_height }}" />
+    <img class="captcha_image" id="{{ image_id }}" src="{{ captcha_code }}" alt="" title="captcha" width="{{ captcha_width }}" height="{{ captcha_height }}" />
     {% if reload %}
     <script type="text/javascript">
         function reload_{{ image_id }}() {

Type/CaptchaType.php

@@ -151,6 +151,14 @@ class CaptchaType extends AbstractType
      * @return string
      */
     public function getName()
+    {
+        return $this->getBlockPrefix();
+    }
+
+    /**
+     * @return string
+     */
+    public function getBlockPrefix()
     {
         return 'captcha';
     }