Add uuid7 validation tag - #1614
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Adds a built-in uuid7 tag validating version 7 UUIDs (RFC 9562), mirroring the existing uuid3/uuid4/uuid5 validators. Includes regex, validation function, registration, docs (doc.go + README) and tests. Fixes go-playground#1595
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What type of PR is this?
What this PR does / why we need it:
Adds a built-in
uuid7validation tag for version 7 UUIDs (RFC 9562).The library already validates UUID versions 3, 4 and 5, but there's no tag
for v7. UUIDv7 has become common as a time-ordered, index-friendly primary
key, so it's a natural addition to the existing set.
Changes, following the exact shape of the existing
uuid5support:regexes.go: adduUID7RegexString/uUID7Regex. Same pattern as v4/v5with the version nibble pinned to
7and the RFC 4122/9562 variant nibble[89ab].baked_in.go: addisUUID7and register theuuid7tag.doc.goandREADME.md: document the new tag.Like
uuid4/uuid5,uuid7accepts lowercase hex only. I left acase-insensitive
uuid7_rfc4122-style variant out of this PR to keep itfocused and because the right name for it (given v7 is defined in RFC 9562,
not 4122) is a call I'd rather leave to you — happy to add it in a follow-up.
Which issue(s) this PR fixes:
Fixes #1595
Testing
Added
TestUUID7Validationmirroring the existing UUID tests: empty input,garbage prefix, wrong-version UUIDs (v3/v4), an invalid variant nibble, an
uppercase value (rejected), and two valid v7 values.
go test ./...passes;go vetis clean.Release Notes