Requiring validity of one or other tag on the same field

[ysomad]

I have login field in request struct and I want to validate it as email or username. Can I do that using go-playground/validator pkg?

[zemzale]

Depends on what are the requirements for the username. But lets say its supposed to be only alphanumerics it would looks something like

type Req struct {
    Login string `validate:"required,email|alphanum"`
}

You can read more about other validations in docs
https://pkg.go.dev/github.com/go-playground/validator/v10#hdr-Using_Validator_Tags

[ysomad]

Thank you! I'll check.