Disclaimer: I'm new to Python and Django, but I've been coding Java
since '98.
In thinking about the url definitions in urls.py, it occurs to me that
a major rewrite of the url patterns could prove to be a pain. For
example, I have an app where the urls are deployed under /foo/, and I
have a URL defined as '^bar/\d+/$'.
When drawing a link to that view in HTML from another app I would 'hard
code' that URL as, say, 'href="/foo/bar/99"'.
Now say I come along and change my foo application, such that the URL
is newly defined as, '^quux/\d+/bar/$'. Everywhere I've hard coded
that link will now be affected, requiring code changes and testing.
I've tightly coupled my app urls.
In response to this problem, my over-engineering brain tells me to
create 'URL' objects, containing the regex defining the URL as well a
way to 'construct' a 'real' URL.
In my example, the calling application would now have something like
bar_url = BarURL(bar=99). I would then use this object to render a
'real' url as such, 'href="{{ bar_url.render_link }}"'. The calling
application would only need to know that a BarURL needs a bar parameter
to construct a valid URL. The BarURL class would be responsible for
defining the regex, constructing a valid URL, and somehow picking up
the deployed application prefix (/foo/ in our case).
Finally, the urls.py module in my foo application would do something
like 'BarURL.REGEX' where one would normally define the regexes for an
application, e.g., (BarURL.REGEX, 'app.foo.views.bar'),.
Anyway, am I overthinking this whole thing? I'm not asking for a
patch, but rather advice on whether this kind of thinking/approach
makes sense in the Django framework? Is it 'pythonic', as they say?
It seems somewhat OO to me, and I like encapsulating the behavior
inside a class. I guess I'm just looking for some seasoned expert
opinions. Well, any opinions really.
Thanks!
doug.
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