I've started a documentation effort of my own back in June, I've got the
docs up on a Github repository: http://github.com/radar/how-rails-works.
Currently it covers only timezones and respond_to for Rails 2.3. There was
another guy who was going to do Dynamic Finders but he hasn't contributed to
that recently.
I like the idea of version specific documentation. Perhaps we could get the
docrails team to volunteer for this kind of effort?

2009/9/13 Yehuda Katz <[email protected]>

> Carl and I are planning on spending some time on internals documentation
> once we ship an alpha (for plugin authors).
> If you have a specific requests for documentation (especially in
> ActionPack), feel free to email me and I'll add it to the list of priorities
> for when we do documentation.
>
> -- Yehuda
>
>
> On Sat, Sep 12, 2009 at 10:51 AM, Czarek <[email protected]>wrote:
>
>>
>> On Sat, Sep 12, 2009 at 06:39:34AM -0700, Rodrigo Rosenfeld Rosas wrote:
>> >
>> > This makes it very hard to get new contributors to Rails core since it
>> > seems every railer is busy and chances are small that they have enough
>> > time to figure out the Rails internals by themselves so that they can
>> > contribute small changes. There are a lot of plugin contributions
>> > since its documentation is well written. I think there could be more
>> > contributors if we had a README.internals that explained the whole
>> > idea about how Rails is structured and the reasons behind it. Then,
>> > each major update to Rails internal structure could be reflected in
>> > this document...
>>
>> Same problem here, but ...
>>
>> There are articles about the internals around the net. Unfortunately
>> they quickly get outdated. And in a way, this is a good thing, because
>> it means Rails is continuously evolving.
>>
>> With all the changes going in to 3.0, maintaining such documentation
>> may be a nightmare, unless it becomes version specific. Especially
>> with all the refactoring going on.
>>
>> Here are a few tips I found useful:
>>
>> 1) logging - insert logging everywhere you can when solving a problem.
>> With very concise code this helps understand what is going on and when
>> faster than any documentation.
>>
>> 2) reading changelogs - sometimes unrelated stuff can give insight
>> into the peculiar cases that Rails has to handle.
>>
>> 3) debugger - stopping and looking at the backtrack can teach a lot
>> about the architecture.
>>
>> 4) Lighthouse - like reading changelogs, but with more details
>>
>> 5) browsing through the source when you don't need to - when you are
>> less frustrated and you don't need to urgently find out what's wrong.
>>
>> Especially the last part - hack on ruby when you are not under
>> pressure. Do it for fun. Learn things before you need them. Read
>> articles about ROR when you have spare time. It pays off eventually.
>> Even if this would mean investing more time in total, it will be more
>> pleasurable.
>> >
>> > I was just trying to add a :full_message parameter to validations, so
>> > that I could prepare a patch to LightHouse, but was stuck trying to
>> > figure out how ActiveRecord is loaded, how Validations are included in
>> > ActiveRecord without being required (when I discovered they are
>> > autoloaded), what are the differences between ActiveModel and
>> > ActiveRecord and several other doubts. It would be much easier if such
>> > a README.internals document exists. I spent about 2 hours doing really
>> > nothing useful to Rails itself, while I could use this time to
>> > actually write a useful patch...
>>
>> I know what it is like to wake up after a few hours of hacking knowing
>> you basically did ... nothing really.
>>
>> > I would like to know what is the Rails core team opinion about that.
>>
>> Beware - my opinion is just from a user struggling to understand
>> Rails, not anyone from the core team.
>>
>> Cheers
>>
>> --
>> Cezary BagiƄski
>>
>>
>>
>
>
> --
> Yehuda Katz
> Developer | Engine Yard
> (ph) 718.877.1325
>
> >
>


-- 
Ryan Bigg

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