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Right now CI4 validation rules fail if the field is empty. So that they only work properly when the field is required. There should be a "nullable" rule to fix this problem. (I believe Laravel does this)

Otherwise null values should not fail validation by default.

See this post https://forum.codeigniter.com/thread-685...#pid352959
We have the "permit_empty" rule. I think this is what you are looking for.

https://bcit-ci.github.io/CodeIgniter4/l...able-rules
Yes! Missed it.