Most of the time, we have to validate a client's input before processing it, which can be achieved through the number of external packages in Go, such as gopkg.in/go-playground/validator.v9, gopkg.in/validator.v2, and github.com/asaskevich/govalidator.
In this recipe, we will be working with the most famous and commonly used validator, github.com/asaskevich/govalidator, to validate our HTML form.
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