Re: Does calling model methods from elements break MVC pattern?

Does calling model methods from elements break MVC pattern?

yep.

Views are for laying out stuff.  controllers for pasing data to view and models for obtaining data.

If your model passes the data to the controller so that the controller has to process the data as little as possible for the view

http://gluei.com/blog/view/cakephp-best-practices-fat-models-and-skinny-controllers
http://cakebaker.42dh.com/2008/01/19/fat-models-and-how-they-change-how-you-use-the-model-class/

There are some performance drawbacks with using requestaction like that.

Mark Story provides details of a solution around requestaction (though this method also has its critics)
http://mark-story.com/Posts/view/reducing-requestaction-use-in-your-cakephp-sites-with-fat-models

hth -S

2008/10/2 ORCC <oskarcah@gmail.com>

It is a question about MVC pattern in cakephp.

I have a calculated value that I want to display in many views, so I
decided to create an element. The business logic has to be performed
in the model, i.e:

models/product.php

class Product extends AppModel {
    //... all attributes and methods

    function performSomeProductCalculation () {
          //perform business logic
          return $result;
    }
}

There are two options to create an element that renders the result
returned by the above method:

- Option 1: Call the model method directly from element:

views/elements/foo.ctp

<?php
App::import('Model','Product');
$p = New Product();
?>
<div class="result">
    The result is <?php echo $p->performSomeProductCalculation() ?>
</div>

- Option 2: Create a controller method for rendering the result, and
call that method in the element via "requestAction"

controllers/products_controller.php

class ProductsController extends AppController {
     //... all attributes and method

     function my_result() {
           return $this->Product->performSomeProductCalculation();
      }
}


views/elements/foo.ctp

<?php
$r = $this->requestAction('/products/my_result');
?>
<div class="result">
    The result is <?php echo $r; ?>
</div>


Wich options is the correct one in order to respect 100% the MVC
pattern? ? ?

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