[Validator][ConstraintValidator] Safe fail on invalid timezones #34904
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Tests pass on my machine with both implem (polyfill and native) but fails on CI 😕 Looks like the good value is not returned when using UTC. |
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Also we have to think of what is the goal here: display the passed date relatively to its timezone (the same datetime in all timezones must display the same thing basically). Can't we just always set the formatter to UTC, copy the passed value in a temp var and set the timezone to UTC, so we don't have to deal with this timezone stuff? |
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Looks like we can. It simplifies everything. I just pushed it. |
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rebase needed |
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Co-authored-by: Scott Dawson <scott@loyaltycorp.com.au>
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Rebased + tests pass. I modified the tests to strenghten them. |
nicolas-grekas
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Dec 13, 2019
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Thank you @fancyweb. |
nicolas-grekas
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Dec 13, 2019
…zones (fancyweb) This PR was merged into the 3.4 branch. Discussion ---------- [Validator][ConstraintValidator] Safe fail on invalid timezones Co-authored-by: Scott Dawson <scott@loyaltycorp.com.au> | Q | A | ------------- | --- | Branch? | 3.4 | Bug fix? | yes | New feature? | no | Deprecations? | no | Tickets | #33901 | License | MIT | Doc PR | Alternative to #33902. I will explain why I think it is better this way: 1. We set the timezone with the setter because it's 100% safe, it never fails. It fall backs to the default timezone if the provided timezone is not supported (as if we passed null, so the same behavior that always existed). We are therefore compatible with all edge cases. 2. We don't validate the timezone with `\DateTimeZone::listIdentifiers()`. It only returns full identifiers like "Europe/Paris" but it doesn't take into account "numeric" identifiers such as "+08:00" which are perfectly valid. I added a test case to ensure we stay valid with this case. + some invalid identifiers for the native `\IntlDateFormatter` are valid with the polyfill that uses `\DateTimeZone` (eg : `X`). I don't think we can validate anything safely that will work reliably on both implementations. Commits ------- 3b1b994 [Validator][ConstraintValidator] Safe fail on invalid timezones
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Co-authored-by: Scott Dawson scott@loyaltycorp.com.au
Alternative to #33902.
I will explain why I think it is better this way:
\DateTimeZone::listIdentifiers(). It only returns full identifiers like "Europe/Paris" but it doesn't take into account "numeric" identifiers such as "+08:00" which are perfectly valid. I added a test case to ensure we stay valid with this case. + some invalid identifiers for the native\IntlDateFormatterare valid with the polyfill that uses\DateTimeZone(eg :X). I don't think we can validate anything safely that will work reliably on both implementations.