Description

I needed a simple way of storing Validation rules callbacks into Models. This had to be made with minimal modifications to the Form validation library and resembling as much as possible the CI conventions for validation rules.

Once installed the library you will only need to append _model[your_model_name] to your validation rule callback name, where your_model_name indicates the model which contains the callback function.

If no model is specified, it is assumed that the callback resides in the Controller code (as CI behaves by default).

Example

Let’s say you want to assign the _validate_authcode callback to the authcode form field:

callback__validate_authcode
‘_validate_authcode’ callback is located in the requested Controller (the default CI’s callback behavior)

callback__validate_authcode_model[admin]
‘_validate_authcode’ callback is located in the ‘admin’ Model

callback__validate_authcode_model[public]
‘_validate_authcode’ callback is located in the ‘public’ Model

Check the full documentation on the wiki

I actually think this has been done before (by Wiredesign).
Nice contribution though.
I really don’t get why CI wants the validation to be made in the controller.
The model seems to be the right place to do it…

Thanks Johan

The Wiredesignz version is for the now deprecated Validation library. Additionaly, he added some logic and had to override the “run” method in order to make it compatible with Modular Extensions HMVC (if I’m not wrong). beemr took the Wiredesignz library an updated it to make it work with the new Form Validation library.

These are the solutions I was aware of. However I wanted to follow a more “CI like” validation rule naming convention:

(wiredesignz) callback_users_model->is_unique[username] VS (simple callbacks) callback_is_unique_model[users]

With this last convention it is easier to switch between the Controller callback (callback_is_unique) and the Model callback (callback_is_unique_model[users]).

And I don’t needed to support HMVC, so the code would be much simpler.

I hope it is a bit clearer now what was my original intention.

It’s alot clearer!

Thanks for the contribution! Will try it out asap.

I had already posted a fix to make Callbacks into Modules and Models with CI 1.7.1 and the Form_validation library.

Simply pass the “object” (HMVC module or model) to use for callbacks into the run method.

I’ve tried it and it works very good!

Just some thoughts:

I personally name my models with _model added to the end of the modelname.

Also, someone created an extension to validate the $_FILES-array with form_validation-class. I think your contribution should merge with that one. I did a quick and dirty merge which has not been tested 100%, but if I’ll find it usable, I’ll post it (if you let me do it ofcourse).

Great contribution anyway!
Regards
Johan

I had been working on a solution to this problem yesterday, and had not seen this thread until I wasted a lot of my time! I’m going to use your solution, because it makes for a very clean controller. Thanks for sharing.