How can I change app_url of Perl Kelp App

July 15, 2024

I want to change app_url.

I did it as follows:

package Post;
use Kelp::Base 'Kelp';

use utf8;

sub before_dispatch {
    # overriding this method disables access logs
}

sub build {
    my $self = shift;
    
    $self->config_hash->{app_url}='https://perl-kelp.sys5.co';

It seems to work.
Is this a good way?

>Solution :

Changing the app_url in a Perl Kelp application as you described is valid but not ideal… A more standard approach involves using configuration files or environment variables. To use configuration files, create a file like conf/config.pl and specify your settings, including the app_url. For example:

{
    app_url => 'https://perl-kelp.sys5.co',
    # other configurations...
}

Then, modify your Post module to load this configuration:

package Post;
use Kelp::Base 'Kelp';

sub build {
    my $self = shift;
    my $app_url = $self->config('app_url');
    # use $app_url as needed
}

1;

Alternatively, you can use environment variables to manage configurations. Set an environment variable for app_url:

export APP_URL='https://perl-kelp.sys5.co'

Modify your Post module to read this variable:

package Post;
use Kelp::Base 'Kelp';

sub build {
    my $self = shift;
    my $app_url = $ENV{'APP_URL'} || 'default_value';
    # use $app_url as needed again
}

1;

Using configuration files or environment variables ensures better maintainability and flexibility for your Kelp application. All of this is generally considered a good practice for larger projects and organizations.