Erm, sorry - the loop in the second example should be:
for($i=count($topLinks)-1; $i>=0; --$i) {
$expr[] = $coef . '* (Link.id='.$topLinks[$i].')';
$coef *= 2;
}
If you have a lot of IDs in the array, it might be worth converting
the expression to use Horner's method.
On Jun 9, 10:31 am, grigri <[EMAIL PROTECTED]> wrote:
> These are just some ideas - not sure which one would be more
> efficient:
>
> $order = array();
> foreach ($topLinks as $linkId) {
> $order[] = '(Link.id='.$linkId.') DESC';}
>
> ... = $this->Link->find('all', array(
> 'conditions' => ...,
> 'order' => $order
> ));
>
> [or]
>
> $coef = 1;
> $expr = array();
> for($i=count($topLinks)-1; $i>=0; --$i) {
> $expr[] = $coef . '* (Link.id='.$topLinks[$i].')';}
>
> $expr = '('.implode('+', $expr) . ') AS position';
>
> ... = $this->Link->find('all', array(
> 'conditions' => ...,
> 'fields' => 'Link.*, ' . $expr,
> 'order' => 'position ASC'
> ));
>
> hth
> grigri
>
> On Jun 9, 8:15 am, Abhimanyu Grover <[EMAIL PROTECTED]> wrote:
>
> > Hey,
>
> > This is not Cake specific, but just posting here as I think this will
> > be useful for others as well. Here's my code:
>
> > $topLinks = $this->Vote->getTopRated();
> > $this->set('links',
> > $this->Link->findAll(array('Link.id'=>
> > $topLinks, 'Link.status'=>UC_STATUS_APPROVED)));
>
> > In first line, I'm trying to get Id's of all top rated links - which
> > comes from a bit complex algorithm.
> > In second line, I pass on those ids to findAll() which creates sql
> > statement like this:
>
> > WHERE `Link`.`id` IN (1, 5, 7, 4, 3)
>
> > Now problem is, I need them in same order as I've sent them in IN(..)
> > but mysql returns them ordering by id. i.e. 1, 3, 4, 5, 7
>
> > I've tried appending Order by NULL, but it wouldn't work. Can anyone
> > help?
>
> > Thanks,
> > Abhimanyu Grover
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