Problem extending library

[eluser]sonsa[/eluser]
Hi,

I am sorry if my question is stupid, i'm not an experienced user of codeigniter (not experienced in MVC either).

Is it possible to extend a library in codeigniter?
Here is my problem :

I would like to have the following library (update.php) and use the new functions of MY_Model (extention of CI_Model) , wich i added in the application/core folder.

Code:

class Update extends MY_Model{
}

i have the following error "Class 'MY_Model' not found".

However, everything is fine if i move update.php in the model folder and use it as a model.
Am i doing something wrong here? Or is there an other syntax to achieve that?

Thanx in advance

[eluser]the_unforgiven[/eluser]
Have you autoloaded it via autoload.php in config?

[eluser]sonsa[/eluser]
Thanks for the fast answer.

I don't understand why i should autoload it if i use it in a library, when it is already autoloaded when i use it in a model.

I tried autoloading it with

Code:

$autoload['model'] = array("MY_Model");

but i get the following error "Unable to locate the model you have specified: my_model".

Can you please help me with this autoloading if it is the problem?

Thanks

[eluser]Mirge[/eluser]
MY_Model.php should be in application/core/ (You did this)
Update_model.php should be in application/models/

Then Update_model can extend MY_Model as normal. I just tested this.

Be sure you're loading Update_model, $this->load->model('Update_model');

EDIT:

I guess in your case Update_model.php should be Update.php, containing: class Update extends MY_Model { ... }

Then load:

$this->load->model('Update');

[eluser]sonsa[/eluser]
Hello,

Yeah if i use it as a model it works with no problems at all.

But i was trying to use it in a library with "Update_model" being in application/libraries/ and that's where i can't manage to make it work.

[eluser]Mirge[/eluser]
A library isn't a model. Your model belongs in models/ and your library belongs in libraries/.

Libraries can USE models, but libraries aren't models. Check out these parts of user guide:

http://ellislab.com/codeigniter/user-gui...w/mvc.html
http://ellislab.com/codeigniter/user-gui...odels.html
http://ellislab.com/codeigniter/user-gui...aries.html

[eluser]sonsa[/eluser]
Thank you.

I was indeed confusing models and libraries.
Thanks you all for your help and your fast answers and sorry for the trouble.