I am trying to get my head wrapped around using components.
I've got a table of rectangles. A typical record would be an id,
width, and height:
id : 2x4
b: 1.5
h: 3.5
I've got the typical setup:
M: Rectangle
C: RectanglesController
V: index, add, edit, view
I would like to calculate other properties of a rectange like
perimeter, area, moment of inertia, etc. I do not need to store these
in the database, since they are derived from b & h.
For my view.thtml view I'd like to see something like:
id : 2x4
b: 1.5 in
h: 3.5 in
A: 5.25 in^2
Sx: 3.063 in^3
etc.
I'd like to create a Rectangle class/object to encapsulate these
properties. Is a Component the best place to do this? Can I put it in /
components/rectangle.php and call it:
class Rectangle extends Object ...? Or will there be a name confict
since the Model is also called Rectangle?
For the sake of eliminating confusion I'm calling the component Foo.
Here's what I've got which doesn't work:
In the controller:
var $components = array('Foo');
function index()
{
$recordset = $this->Rectangle->findAll(null, null, 'id ASC');
// Calculate additional rectangle properties and add them
to the recordset
foreach ($recordset as $record => $values)
{
$rect = $this->Foo($values['b'], $values['h']);
$values['A'] = $rect->A;
}
$this->set('rectangles', $recordset);
}
I'd like to instantiate the Foo object like $rect = new Foo($width,
$height) but I don't know how to do this in the controller.
Any light that could be shed on this would be appreciated.
Thanks, Brian
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