MBS-14231: Block API POST of tags with commas #3702
Merged
+81
−0
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Fix MBS-14231
Problem
Our tag UI on the website does not support tags with commas, and our tags are documented to be comma-separated. At the same time, nothing in the API is blocking submitting tags with commas in POST submissions, which later get "stuck" since they cannot be voted on nor withdrawn on the website itself.
Solution
This implements what seems to be the obvious solution: rejecting the submission of tags with commas entirely also via the API.
I left an exception for "withdraw" votes, since removing tags with commas seems entirely safe and makes it a bit easier to clean any existing tags (there seem to be only 52 tags with commas at the moment though, see this gist).
Testing
Manually with my local server, plus added some basic tests here.