Show validation errors for URLs longer than 200 chars in the "Add event" form

[mitio]

I just had an event with a broken "More information" URL, because it seems to have been silently truncated at some point to 200 chars.

200 chars is not that long for a URL. A more sensible limit can be set to 1024 or even near 2k.

However, even if the limit stays at 200 chars, a validation error should tell the user that his URL is too long and has to be shortened in order to fit. The error can even mention a URL shortening service like bitly.com.

[goranche]

thanks for the issue, I agree on the validation, we will look into it (maybe care to fork the repository, fix it yourself and submit a pull request? 😉 )

but about the 1+k URLs? I don't agree with you on that one, 200 characters should be enough for a URL, if you ask me, so I doubt that limit will be increased... sure, one might include tracking info in get params and various stuff like that, but that can be handled otherwise (you already mentioned shortening services), so it wouldn't really make sense