Devdocs: Configuration object topic

[jcalcaben]

New topic request

Description

As a developer, I want to understand how to "use the classes described in Overview of Module Configuration to create a configuration object for a new system wide foo.xml. In addition to solving a specific problem (how do I add new global/frontend/adminhtml configuration file to the system) the existence of this article would also allow developers to infer how they could read from the other configuration files."

Content checklist

• [ ] How to use the classes described in Overview of Module Configuration to create a configuration object for a new system wide foo.xml
• [ ] How to read from the merged configuration tree
• [ ] How to use classes from the existing configuration class hierarchy to read custom configuration files

Additional information/resources

StackExchange: http://magento.stackexchange.com/questions/82022/magento-2-how-to-read-from-configuration-tree

Related JIRA ticket: MAGEDOC-2582

Related GitHub issues:

• #470
• #453

[diazwatson]

Hey guys I am looking into this issue could you please assign this to me?

[keharper]

@diazwatson It's yours.

[diazwatson]

Thanks @keharper 👍

[meker12]

@diazwatson Are you still interested in working on this new topic?

[diazwatson]

Hi @meker12 apologies for the delay. I will submit a PR in the next few hours

[diazwatson]

I finally started working in this (apologies for the delay) and I have some doubts you guys maybe could give me a hand with?

1. do you guys think is better to use generic names like Vendor\ModuleName in the examples or refer to the core files?
   Putting myself in the shoes of a developer that lands to this topic looking for answers that help his/her develops a module I can see benefits in both approaches.

2. Module configuration files is a big section and therefore I think it would make more sense to create a separated topic for this. But at the same time I have not seen any other HowTo topic under Configuration Guide so I am not sure what would be the best place to put this topic

Thanks in advance

[jcalcaben]

do you guys think is better to use generic names like Vendor\ModuleName in the examples or refer to the core files?
Putting myself in the shoes of a developer that lands to this topic looking for answers that help his/her develops a module I can see benefits in both approaches.

I would go with the generic name as the primary example and then link/refer to core files for any additional information needed.

Module configuration files is a big section and therefore I think it would make more sense to create a separated topic for this. But at the same time I have not seen any other HowTo topic under Configuration Guide so I am not sure what would be the best place to put this topic

I agree with creating a separate topic for this issue. My recommendation would be to put it under the Module configuration files topic.

[diazwatson]

Thanks @jcalcaben

[shrielenee]

Contributors! See the above closed PR for the work. Clean it up, submit, call it good!

[atwixfirster]

Let's try with this one - https://github.com/magento/devdocs/pull/6514. It's based on @diazwatson PR and contains @rogyar notices.

Thanks