Re: Query with conditions in HABTM models

Hello David,

the solution you came up with is rally BAD!!! people burn in hell for
code like that. seriously

look at what you are doing
1. you select all records from your linking table (which is double the
size of your posts table. assuming every post has 1-4 tags on average)
in one query. insane right?
2. then you go through entire record set extracting post ids (lot's of
duplicates because every post has 2-4 tags on average)
3. you do full index scan on your posts table (2-4 time for every
post, because you didn't do distinct select in previous insane steps)
excluding virtually every record except few latest uncategorized
posts.

in the long run those 3 lines of code will crush your server.

perhaps you should look into habtm countercache.
although it is not implemented for habtm as core feature. i've come
across some articles with workarounds
do that and it will come down to one indexed select on countercache
field where countercache is zero

Cheers

On Fri, Apr 29, 2011 at 5:53 AM, davidhc <davidhc@gmail.com> wrote:
> Ignore my previous message...
>
> I have solved it with this http://bin.cakephp.org/view/471586323
>
> Thank you again, cricket :D
> David.
>
> On 29 abr, 10:17, davidhc <davi...@gmail.com> wrote:
>> Only one more doubt...
>>
>> Could I use the native cakephp paginator with this model function?
>
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