Here is a pretty simple save example from the manual:

function edit($id) {
    if(!empty($this->data)) {
        if($this->Recipe->save($this->data)) {
            ...
        }
    }
}

Somehow save knows which Recipe id to update, but we never tell it -
and it is not part of $this->data. How does save know it?

  Regards

    Jonathan

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