Missing Controller not reading dropbox add function Cakephp Getting View Model not found -

i have follow code in controller, getting values dropbox chooser.

<?php class dropboxboxfilescontroller extends appcontroller {    public function add() {     if ($this->request->is('post')) {         $this->request->input('json_decode');         $this->dropboxfile->create();         if ($this->dropboxfile->save($this->request->data)) {             $this->session->setflash(__('your file has been liberated :)'));             $this->redirect($this->referer());         } else {             $this->session->setflash(__('something went wrong!'));         }     } }}?> 

however, when getting error add function not exist when hit submit on submit button chooser.

i have tried several things nothing seems working far.

edit: view code

<?php echo $this->form->create('dropboxfile', array ('array' => 'file')); ?> <input type="dropbox-chooser" name="selected-file" style="visibility: hidden;"/>   <?php echo $this->form->end('finish'); ?> 

the dropbox code using https://www.dropbox.com/developers/dropins/chooser/js

edit

<form action="/cake/homes" array="file" id="dropboxfileindexform" method="post" accept-    carset="utf-8"><div style="display:none;"><input type="hidden" name="_method" value="post"/></div><input type="dropbox-chooser" name="selected-file" style="visibility: hidden;"/>   <div class="submit"><input type="submit" value="finish"/></div></form  

you're using wrong format second argument in $this->form->create(). notice how, in parsed form element, has invalid 'array="file"' element , action not lead add action. try instead:

<?php  echo $this->form->create(     'dropboxfile',      array(         'url' => array('action' => 'add'),         'type' => 'file'     ) ); ?>