Using model constants in config file (CodeIgniter)

Question

One of the things I would like to follow is to stick to the best coding practices. One of them is DRY rule (Don't Repeat Yourself). I try to define some constants in proper model class and use them everywhere else in the code, so when it comes to a little change, it has to be done only in one place.

I have this class Hero_attributes, which has several constants, e.g.:


class Hero_attributes
{
    const ID = 'id';
    const NAME = 'name';
    const LEVEL = 'level';
    const MAG_LEVEL = 'maglevel';
    const VOCATION = 'vocation';
    const GENDER = 'sex';
    const SPEED = 'speed'
    (...)
}

I have also made a custom config file tenkai_config.php which is autoloaded. In the config array I'd like to use constants from Hero_attributes class as keys, i.e.:


$config['vocations']['default'] = array(
    'hero' => array(
        Hero_attributes::LAST_LOGIN => 0,
        Hero_attributes::LEVEL => 1,
        Hero_attributes::MAG_LEVEL => 80,
        Hero_attributes::RESIDENCE => 1,
        Hero_attributes::POSITION_X => 73,
        Hero_attributes::POSITION_Y => 181,
        Hero_attributes::POSITION_Z => 6,
        (...)
    )
);

However, I get Fatal error: Class 'Hero_attributes' not found in C:\wamp_new\www\yourwodb\application\config\tenkai_config.php on line 29 message.

How can I use constants in config file?

It wont work, because config.php variables loading dynamicly — safarov
– safarov, Commented Apr 1, 2012 at 18:21

Code Prank · Accepted Answer · 2012-04-01 21:09:00Z

5

If you only need to define constants. You can define them in ./application/config/constants.php file they are available throughout the application

answered Apr 1, 2012 at 21:09

Code Prank

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4 Comments

Ventus Over a year ago

Yes I could do that, but in my opinion it would not be consistent with best coding practices. I want every piece of code to belong to the right place (class, config, etc). I don't really want to use one global place with all mixed constants.

Code Prank Over a year ago

i think it is a good practice where you have specific where your constants are defined and it would be easy to maintain in future as you know that all constants are defined in one file

Ventus Over a year ago

Well, I can agree with that. However, if constants are strictly related with one, let's say module, then imo it is better to have them separated. Of course if constant has its use in many different places and context then why not to make it global. Yet, my constants usually are used in a strict defined area. Anyways, thanks for the answer :)

robertmain Over a year ago

I agree with @Ventus. I'm working on a piece of code right now that sends out mass emails to users. It's more appropriate to have the message statuses as constants in the message model rather than the global configuration file.

Nimantha · Accepted Answer · 2023-11-02 02:07:15Z

0

You need to autoload the Hero_attributes model class. Probably have to do that before autoloading the config file.

edited Nov 2, 2023 at 2:07

Nimantha

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answered Apr 1, 2012 at 16:14

santosh

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