Hi Thomas,

On Wed, Feb 5, 2014 at 10:13 PM, Thomas Güttler <h...@tbz-pariv.de> wrote:

> Hi,
>
> here is some feedback to the check framework, documented at:
>
> https://docs.djangoproject.com/en/dev/ref/checks/
>
> ---
>
>
> {{{
> Error('error message', None) # Good
> }}}
>
> I don't think this is "good". The "hint" should be optional. The above line
> is ugly, since you don't know why there is second argument (None).
>

This was intended as a case of enforcing explicit > implicit. The next line
in the documentation reads:

{{{
Error('error message', hint=None)  # Better
}}}

suggesting that the preferred syntax is to explicitly state that there
isn't a hint.

However, I can see how this might be slightly contrary to expectation for
Python developers generally. I'd be interested in hearing other opinions on
this.


> ---
>
> https://docs.djangoproject.com/en/dev/ref/django-admin/#django-admin-check
>
> {{{
> ...
>
> --tag <tagname>
>
> The system check framework performs many different types of checks.
> }}}
>
> Which tags are available from django?
>

This is something I'm hoping to add to documentation in the near future.


> How can I list the available tags (django tags and my tags)?
>

At present, there isn't any way. However, this is an interesting feature
request - adding a --listtags option to `manage.py check` that just lists
the tags that are available sounds like a good idea to me.


> How can I list the available checks?
>

This is another area that where I'm hoping to improve documentation in the
future. An automated --listchecks option would be a bit harder, because
individual checks aren't registered anywhere centrally.


> If a check needs two minutes, it is not wise to run it on "runserver"
> on development machines. Is there a way to define which tests should
> be included or excluded depending on the context. For example: if
> "runserver" gets called don't call tests with have tag "foo".
>

I accept the problem in theory, but I'm having difficulty thinking of a
situation where a check would take 2 minutes. My inclination is that this
would be "solved by the market" - If Django (or a third party app) were to
add a plugin that had extremely slow performance in real-world conditions,
people would demand that it was removed or refactored.

Do you have a specific idea for a check that might take a long time to run?


> ----
>
> https://docs.djangoproject.com/en/dev/ref/checks/#
> registering-and-labeling-checks
>
> {{{
> @register('compatibility')
> }}}
>
> I don't like strings like this, since it can contain typos.
>
> Are there objects for common tags? Example:
>
> {{{
> @register(Tag.COMPATIBILITY)
> }}}
>
> Not at present; however, that sounds like a reasonable idea.


> Thank you for this check framework. I like it.
>
> Thanks for the review notes! You've made a couple of really good
suggestions here.

Yours,
Russ Magee %-)

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