I createt the following model to link 2 relational tables:

    class Ficha extends AppModel {

    //public $useTable = 'ficha_seg';

    var $primaryKey = 'id_ficha';

    var $name = 'Ficha';
    var $belongsTo = array(
        'Perigo' => array(
            'className'    => 'Perigo',
            'foreignKey'   => false,
            'conditions' => 'Perigo.id_fichas = Ficha.id_ficha'
        )
    );
}

Now, i have a form that requires data from the class Ficha, and then is redirected to another ctp page where i will input the data for the table "Perigos". However, since i'm still a newbie in cakephp i'm having difficult building that second form to insert the data on the table "Perigos". Here goes the code i built at the moment related to the second form:

FichasController.php (the method where is it supposed to save the data on the table "Perigos":

public function preencher_ficha(){

if ($this->request->is('ficha')) {
        $this->Ficha->create();

    if ($this->Ficha->Perigo->save($this->request->data)) {
        $last_id=$this->Ficha->getLastInsertID();
        $this->Session->setFlash('Your post has been updated '.$last_id.'.');
        //$this->redirect(array('action' => 'preencher_ficha'));
    } else {
        $this->Session->setFlash('Unable to qualquer coisa your post.');
    }
}   
}

The preencher_ficha.ctp file with the form:

echo $this->Form->create('Ficha->Perigo', array('action' => 'index'));
echo $this->Form->input('class_subst', array('label' => 'Classificação:'));
echo $this->Form->input('simbolos_perigo', array('label' => 'Símbolos:'));
echo $this->Form->input('frases_r', array('label' => 'Frases:'));
echo $this->Form->end('Finalizar Ficha'); 

Here i guess the create part is wrong, but i think i have errors too in the controller part.