<div dir="ltr">On Wed, Oct 1, 2008 at 6:22 PM, Ashley Moran <span dir="ltr"><<a href="mailto:ashley.moran@patchspace.co.uk">ashley.moran@patchspace.co.uk</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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On Oct 01, 2008, at 8:17 pm, Mark Wilden wrote:<br>
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Sounds like future-proofing to me. In the case of libraries, that can be a good thing. For application code, it flies in the face of YAGNI.<br>
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Actually I don't think that's a YAGNI. You need *an* interface to your models, the question is whether to build one that litters trainwrecks through your code, or one that is internally refactorable.<br>
</blockquote><div><br>ActiveRecord already provides an interface to your models. If you add on to that because it might things easier in the future, that's where I call "YAGNI." It reminds me of a book on Java by a well-known author which said that you should declare an interface for every class, because it will make things easier if you need to change the implementation. He's absolutely right, of course.<br>
<br>However, I say that there are too many things that need doing right now - right this second - to waste time on what may or may not happen in the future. Put another way, what are you willing to give up in order to add this layer?<br>
<br>"Litters trainwrecks," BTW, I believe begs the question.<br>
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<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Embrace change" - Kent Beck. The whole white book is predicated on what you just pointed out about Rails.<br>
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You meant to say Ruby there, right? ;o)</blockquote></div><br>I was responding to the "convention over configuration" remark. But yeah, Ruby certainly does make changing stuff easier than many other languages.<br>
<br>///ark<br></div>