How to use required_if when checking if a field equals a string with spaces in it?

[geoff-maddock]

I'm trying to use required_if to validate requiring a field if another field equals a specific string that has a space in it. However, I can't determine the correct format for the expression. Here are the examples I've tried and the results. In every case Churn Reason is nil:

        Stage                           *string
	ChurnReason               *string              `json:"churn_reason,omitempty" validate:"required_if=stage 'Churn Reason'"`

This succeeds, no validation error - there should be an error since Churn Reason is required and it is not provided.

        Stage                           *string
	ChurnReason               *string              `json:"churn_reason,omitempty" validate:"required_if=stage \"Churn Reason\""`

This returns an error Bad param number for required_if ChurnReason

        Stage                           *string
	ChurnReason               *string              `json:"churn_reason,omitempty" validate:"required_if=stage Churn Reason"`

This returns an error Bad param number for required_if ChurnReason

[zemzale]

In this case, you have to use the Hex code of the space which is 0x20. So that would look something like

Stage         *string
ChurnReason   *string  `validate:"required_if=stage Churn0x20Reason"`

See the docs : https://pkg.go.dev/github.com/go-playground/validator/v10#hdr-Using_Validator_Tags