title: symfony2: multipage form - passing entities
body: <p>stack: symfony2/doctrine2/php/mysql</p>
  
  <p>a multipage form constist of two steps. each step is realized in a controller action.</p>
  
  <p>in step1, the form is displayed. form-input is validated in the same action. if the form is valid the user should be redirected to the second step/action. in the second step the user has to confirm his input. after confirmation the data should be stored in the db.</p>
  
  <p>thus form-entities/form-data are/is needed in the second step/action. however i do not want to store it in the db before confirmation.</p>
  
  <p>do i really need to serialize all objects? to the session? 
  is there a better approach?</p>
  
  <p>any suggestions?</p>