/**
* Validates data submitted in the edit form. If the validation fails,
* displays the edit page. Otherwise, updates the information in the
* database and redirects back to the edit page.
*
* @param int $id id of the edited ingredient
*/
public static function edit($id)
{
$params = $_POST;
$attributes = array('id' => $id, 'ingredient_name' => $params['ingredient_name'], 'ingredient_type' => $params['ingredient_type'], 'price' => $params['price']);
$validator = self::ingredient_validator($attributes);
if ($validator->validate()) {
$ingredient = new Ingredient($attributes);
$ingredient->update();
Redirect::to($params['redirect'], array('message' => 'Ainesosaa muokattu!'));
} else {
View::make('ingredient/edit.html', array('errors' => $validator->errors(), 'ingredient' => $attributes));
}
}