php - How to run an action of controller file from .ctp file?

Solution:

Create an element, for instancelist_category.ctp.

In the element userequestAction to get the data:

<?php
    $categories = $this->requestAction('/users/list_categories');
?>

<?php foreach($categories as $category): ?>

    <?php // Your display code goes here ?>

<?php endforeach; ?>
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In your controller make sure youreturn the data you want.

<?php
    function list_categories() {

        return $this->User->Category->find('all');

    }
?>
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You can reuse the code for yourlist_category.ctp view.

There is an overhead when usingrequestAction but it is often less than people believe.

Solution:

Can you do that with routing? I'm not sure of the syntax off the top of my head but I think you can specify that method that the controller runs when you land on that page

Solution:

It seems wrong, what is it that you're trying to accomplish? How about elements?

Solution:

How about calling the controller from your main controller, then pass its results to your layout. Finally use an element to render the output there and also use the element to render the output on that other controller too. That way you don't have duplicate layouts. Just one element used by two controllers.

This is very similar to the way Rails creates its layouts when you 'bake' them. It creates an equivalent of a element to use in the add and edit layouts.

Solution:

This can be done with requestAction, but be aware, that it's expensive and you should be careful with it.