What performance differences do you see? Let's say ModelA has references to
ModelB, ModelC, ModelD...
You use only ModelA on your controller but access B, C, and D through its
linkage with A.
When CakePHP takes the var $uses array it will instantiate all models in
there, and for each model it will *instantiate* all models linked to it. You
can see this when the Model constructor calls:
$this->__createLinks();
That has:
foreach($this->__associations as $type) {
$this->__constructLinkedModel($assoc, $className);
}
And __constructLinkedModel() has:
if(!class_exists($className)){
loadModel($className);
}
if (ClassRegistry::isKeySet($colKey)) {
$this->{$assoc} = ClassRegistry::getObject($colKey);
$this->{$className} = $this->{$assoc};
} else {
$this->{$assoc} = new $className();
$this->{$className} = $this->{$assoc};
}
On the other hand Controller::constructClasses() has:
foreach($uses as $modelClass) {
if(!class_exists($modelClass)){
loadModel($modelClass);
}
$model =& new $modelClass($id);
$this->{$modelClass} =& $model;
}
So what is the big boost in performance you see when you choose one method
over the other?
And BTW, Code Readability (and as such Maintenance) is, in my opinion, *AS
IMPORTANT* (if not more) as performance. Hardware is cheaper than
developer's time.
-MI
---------------------------------------------------------------------------
Remember, smart coders answer ten questions for every question they ask.
So be smart, be cool, and share your knowledge.
BAKE ON!
blog: http://www.MarianoIglesias.com.ar
-----Mensaje original-----
De: [email protected] [mailto:[EMAIL PROTECTED] En nombre
de CraZyLeGs
Enviado el: Lunes, 26 de Febrero de 2007 07:44 a.m.
Para: Cake PHP
Asunto: Re: Passing value from appController to all models used by an action
If it's there, no need for $uses.
I think performance is much more important than Source code
readability, and hey $this->modelClass->AssocModel isn't that ugly
compared to $this->AssocModel
a rule of thumb would be:
When trying to use a model, first thing to check is, is it linked to a
model I already have. if it's not available, and if I'm going to use
it in quite a few of the actions, put it in uses, if it's just a quick
use, check the Registry if it's not there, loadModel()-it and create
it.
This is true for components too.
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