Comments on: CodeIgniter and Doctrine from scratch. Day 9 – Templates & Data Hydrators

By: Gareth

Gareth — Fri, 06 Aug 2010 03:50:34 +0000

Sorry, completely didn’t see the & before the variable name! I didn’t even know what that did, but i do now!

You are correct, afterall

By: Gareth

Gareth — Fri, 06 Aug 2010 02:47:57 +0000

When you create getThreadsArray, should line 35 (return $threads) not be return $thread?

You create the newly structure $thread array and then return the array first obtained by the first DQL query..

By: yoursjazz

yoursjazz — Thu, 15 Jul 2010 11:02:22 +0000

Sorry ,This is my fault~,I copy getThreadsArray function to controller…

By: yoursjazz

yoursjazz — Thu, 15 Jul 2010 07:49:59 +0000

Hi, I download your day9 source code,then run it ,Iget the error as bellow:
Fatal error: Uncaught exception ‘Doctrine_Record_Exception’ with message ‘Unknown method Forum::getThreadsArray’ in D:\wamp\www\hmvc\system\application\plugins\doctrine\lib\Doctrine\Record.php:2533 Stack trace: #0 [internal function]: Doctrine_Record->__call(’getThreadsArray’, Array) #1 D:\wamp\www\hmvc\system\application\modules\user\controllers\forums.php(7): Forum->getThreadsArray() #2 [internal function]: Forums->display(’10′) #3 D:\wamp\www\hmvc\system\codeigniter\CodeIgniter.php(236): call_user_func_array(Array, Array) #4 D:\wamp\www\hmvc\index.php(115): require_once(’D:\wamp\www\hmv…’) #5 {main} thrown in D:\wamp\www\hmvc\system\application\plugins\doctrine\lib\Doctrine\Record.php on line 2533

Help……

By: James Pakele

James Pakele — Thu, 15 Jul 2010 02:30:11 +0000

I don't know if I'm doing something wrong somewhere, but I had to make the following changes to the getThreadArray() function in the Forum Model for the code to run correctly on my system. changed line 23: from: ->where('p.id = ?', $thread['Posts'][0]['first_post_id']) to: ->where('p.id = ?', $thread['first_post_id']) changed line 27: from: $thread['num_replies'] = $thread['Posts'][0]['num_replies']; to: $thread['num_replies'] = $thread['num_replies']; BTW: This tutorial has swayed me from using DataMapper OZ edition for my current project. By the looks of this it seems that by doing so I have saved a bunch of time and gained a lot more functionality. Most comprehensive web tutorial I have EVER gone through on ANY subject EVER. You should definitely consider putting out a book. *Have you considered doing using CI+Doctrine with MondoDB? Aloha James

By: K. Beau Beauchamp

K. Beau Beauchamp — Tue, 06 Jul 2010 09:51:46 +0000

I love your site and it’s been very helpful in getting me started with Doctrine. However, I note that you’re putting SQL (DQL) calls in your controllers. Ouch. In N-tier architecture this is generally a major violation of abstraction. Should you not be placing these SQL (DQL) calls in a CI model?

By: Richard

Richard — Thu, 17 Jun 2010 20:45:16 +0000

found if using hydrate_array outside of a model I need to use the following
$q->setHydrationMode(Doctrine_Core::HYDRATE_ARRAY);
doctrine_core not just doctrine otherwise I get an error on the dql. took me a few days to find that tip.

By: Ryan Bosinger

Ryan Bosinger — Thu, 17 Jun 2010 16:30:58 +0000

Looks like you put a lot of work into this. Good job. I wished I would have used Doctrine (or some form of ORM) when I started by big CI project a year ago. Now it’s going to be a pain to make the switch…

By: Burak

Burak — Mon, 29 Mar 2010 01:07:51 +0000

See Day 11 about this.

By: Burak

Burak — Mon, 29 Mar 2010 01:06:44 +0000

If I remember correctly, I encountered some strange behavior in Doctrine where I couldn’t COUNT a column unless I also selected it too.

By: Elbi

Elbi — Sun, 28 Mar 2010 17:42:56 +0000

So the second question got answered by part 11

By: Elbi

Elbi — Sun, 28 Mar 2010 15:50:02 +0000

Another question:
If we profile this you can see that theres a query per thread. Doesn’t that mean we access the DB 1 time for each thread?
Since the DQL is executed one at a time.
Aren’t there ways to optimize this, maybe accessing the database just once and executing all the queries at once, or perhaps getting all the data in the first query with a better DQL query ?
Or maybe its worth it to just duplicate the values in the database in terms of performance?

-Thanks

By: Elbi

Elbi — Sun, 28 Mar 2010 15:35:50 +0000

->addSelect(’p.id, (COUNT(p.id) – 1) as num_replies’)

why is it important to select the post id and not just
COUNT(p.id)
?

By: Burak

Burak — Sat, 13 Feb 2010 22:37:10 +0000

I looked at the core hydration modes, but I don’t think any of them gives exactly what you are asking.

You can write your own hydration method if you want:
http://www.doctrine-project.org/documentation/manual/1_2/en/data-hydrators#writing-hydration-method

By: Ricardo

Ricardo — Thu, 11 Feb 2010 13:49:01 +0000

Hi Burak! Great tut!!

I’m trying to create a CI form_dropdown, using doctrine to create the options array… is there a way, or a hydrator type, that can return an array with the same format as the form_dropdown needs as parameter?

Thank you very much in advance!

By: CodeIgniter and Doctrine from scratch. Day 11 – Record Hooks | PHP and Stuff

Mon, 08 Feb 2010 21:26:44 +0000

[...] Day 9: Templates & Data Hydrators [...]

By: Mohamed Mahmoud

Mohamed Mahmoud — Sun, 07 Feb 2010 14:09:26 +0000

ops .. ididn’t saw burak comment

just saw it after i added mine

By: Mohamed Mahmoud

Mohamed Mahmoud — Sun, 07 Feb 2010 14:08:11 +0000

Hi Piyush

i think maybe i can help you

$result = Doctrine_Query::create()
->select(’*')
->from(’ Module_Name ‘)
->where(’cityid = ?’, $cityid)
->wherein(’status_id’, array(1, 4, 7))
->execute();

and i won’t forget to send many thanks to Burak on this great tuts

Thanks From Sphinx in Egypt

By: Burak

Burak — Sun, 07 Feb 2010 00:38:28 +0000

select(’*')->
from(’table_name’)->
where(’city_id = ?’, $cityid)->
andWhereIn(’status_id’, array(1,4,7))

By: piyush

piyush — Wed, 03 Feb 2010 16:05:39 +0000

Hi Burak, what would be the dql query for this
select * from table name where city_id=’$cityid ‘ and (status_id=1 or status_id=4 or status_id=7);
even i am not sure that it is correct mysql query.

actually my objective is to get all the records having cityid=’some_id’ and having status_id either 1 , 4 or 7.

Thanks
piyush