DataMapper ORM v1.8.2

[eluser]WanWizard[/eluser]
@pukrai,

$this->db points to CI's driver. So something has changed $CI->db. Are you using a $this->load->database somewhere? Are you autoloading the database?

[eluser]WanWizard[/eluser]
@Tonko,

You can either use SQL functions, or the same trick as you've used before: select('something complicated here', false).

Datamapper mimics CI syntax as much as possible.

[eluser]pukrai[/eluser]
[quote author="WanWizard" date="1347817753"]@pukrai,

$this->db points to CI's driver. So something has changed $CI->db. Are you using a $this->load->database somewhere? Are you autoloading the database?[/quote]

I autoload database and datamapper. Your input did lead my hopefully into the right direction: Since I am switching from ion_auth to my library, some calls still direct to ion_auth and I am using quite some redirects in the login/registering process. Since ion_auth does a $this->load->database, that could have messed things up. This explains too, that the error did not occur everytime for every controller function call, I will keep you posted if you are interested if that really was the case.

Feeling a little stupid if that really was the error since I wasted your precious time. Keep up the great work, Wan!

Best regards,
puk

[eluser]rick20[/eluser]
Hi @Wanwizard, first I wanna say thank you for your datamapper, it really helps a lot in my current project, I hope you still keep the good work

I have a question I've asked before here: http://stackoverflow.com/questions/12453...after-save

My problem is, I want to serialize() a field on my object when saving to the database and unserialize() it when getting from the database. In this case, I use 'rules' and 'get_rules' for that field.
However, accessing the field value after calling save() method returns serialized value instead of unserialized one.

So I have to re-get() the object to have 'get_rules' works for that field as suggested by Jordan Arseno.

Is there any other way to have get_rules works after save()? because re-access the database will reduce performance, whereas the object is actually there and ready to be used.
And my objective is to simplify my controllers, so I put all post-processes of a model in itself.

Really appreciate your advice
Thank you

[eluser]WanWizard[/eluser]
That is a good one. I think you have the same issue if you save, but the validation fails. If you have rules that transform values (such as serialize), it will leave the object in a transformed state.

Get rules are run by the protected method _run_get_rules(), which is called after a row read has been converted to an object.

I can't test it at the moment, but if you modify the save() method, and insert

Code:

$this->_run_get_rules();

just before

Code:

return ( ! empty($result) && ! in_array(FALSE, $result));

it should work again.

Let me know to I can push the fix to bitbucket.

[eluser]rick20[/eluser]
Hi Wanwizard, I already add this line:

Code:

$this->_run_get_rules();

Then I try it like this:

Code:

public function index()
{
    $user = new User(32);
    print_r($user->preferences);
    $user->preferences = array('show_email' => TRUE, 'show_name' => FALSE);
    $user->save();
    //print_r($user->preferences);
}

At first try, it works, but then after reloading the page I got this error:

A PHP Error was encountered

Severity: Warning

Message: unserialize() expects parameter 1 to be string, array given

Filename: libraries/datamapper.php

Line Number: 6415

Do you know why?
Thanks in advance

[eluser]WanWizard[/eluser]
Hmm...

Just tried your test code here on the latest DM library (without modifying save), and the get rules work fine here. No matter what I do, the print_r() after save shows the array, not the string...

edit:

Take that back. It seems to be more complicated than this, sometimes it works, sometimes it don't. During testing I saw that notice pop up once. Also, if the column is empty, unserialize returns false instead of empty array, which isn't good either.

[eluser]WanWizard[/eluser]
Just pushed an updated version to bitbucket, could you try it?

[eluser]rick20[/eluser]
Hi Wanwizard,

I just try it, but the problem seems still exist somehow, success on first time, and then error on second try.
I notice that $this->_run_get_rules(); is actually executed, but then according to the warning line 5997, the particular field is already array, which is weird I think, why now it contains array instead of serialized array.

[eluser]WanWizard[/eluser]
Odd, I can not reproduce it, no matter how many times I reload the page with the test code.