 FormRenderer   class FormRenderer implements FormRendererInterface   Renders a form into HTML using a rendering engine.  Constants   CACHE_KEY_VAR     Methods      __construct(FormRendererEngineInterface $engine, CsrfTokenManagerInterface $csrfTokenManager = null)   
   FormRendererEngineInterface   getEngine() Returns the engine used by this renderer.  
     setTheme(FormView $view, $themes) Sets the theme(s) to be used for rendering a view and its children.  
   string   renderCsrfToken(string $tokenId) Renders a CSRF token.  
   string   renderBlock(FormView $view, string $blockName, array $variables = array()) Renders a named block of the form theme.  
   string   searchAndRenderBlock(FormView $view, string $blockNameSuffix, array $variables = array()) Searches and renders a block for a given name suffix.  
   string   humanize(string $text) Makes a technical name human readable.  
  Details                        
    __construct(FormRendererEngineInterface $engine, CsrfTokenManagerInterface $csrfTokenManager = null)
          Parameters   FormRendererEngineInterface $engine    CsrfTokenManagerInterface $csrfTokenManager     FormRendererEngineInterface
    getEngine()
          Returns the engine used by this renderer. Return Value   FormRendererEngineInterface The renderer engine                         
    setTheme(FormView $view, $themes)
          Sets the theme(s) to be used for rendering a view and its children. Parameters   FormView $view     $themes                          string
    renderCsrfToken(string $tokenId)
          Renders a CSRF token. Use this helper for CSRF protection without the overhead of creating a form. 

 Check the token in your action using the same token ID. 
// $csrfProvider being an instance of Symfony\Component\Security\Csrf\TokenGenerator\TokenGeneratorInterface
if (!$csrfProvider->isCsrfTokenValid('rmuser'.$user->getId(), $token)) {
    throw new \RuntimeException('CSRF attack detected.');
}
 Parameters   string $tokenId The ID of the CSRF token   Return Value   string A CSRF token                         string
    renderBlock(FormView $view, string $blockName, array $variables = array())
          Renders a named block of the form theme. Parameters   FormView $view The view for which to render the block   string $blockName The name of the block   array $variables The variables to pass to the template   Return Value   string The HTML markup                         string
    searchAndRenderBlock(FormView $view, string $blockNameSuffix, array $variables = array())
          Searches and renders a block for a given name suffix. The block is searched by combining the block names stored in the form view with the given suffix. If a block name is found, that block is rendered. If this method is called recursively, the block search is continued where a block was found before. Parameters   FormView $view The view for which to render the block   string $blockNameSuffix The suffix of the block name   array $variables The variables to pass to the template   Return Value   string The HTML markup                         string
    humanize(string $text)
          Makes a technical name human readable. Sequences of underscores are replaced by single spaces. The first letter of the resulting string is capitalized, while all other letters are turned to lowercase. Parameters   string $text The text to humanize   Return Value   string The humanized text   

    
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