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TA貢獻1820條經驗 獲得超10個贊
嘗試 ozzo-validation?
package main
import (
? ? "fmt"
? ? "regexp"
? ? "github.com/go-ozzo/ozzo-validation"
? ? "github.com/go-ozzo/ozzo-validation/is"
)
type Address struct {
? ? Street string
? ? City? ?string
? ? State? string
? ? Zip? ? string
}
func (a Address) Validate() error {
? ? return validation.ValidateStruct(&a,
? ? ? ? // Street cannot be empty, and the length must between 5 and 50
? ? ? ? validation.Field(&a.Street, validation.Required, validation.Length(5, 50)),
? ? ? ? // City cannot be empty, and the length must between 5 and 50
? ? ? ? validation.Field(&a.City, validation.Required, validation.Length(5, 50)),
? ? ? ? // State cannot be empty, and must be a string consisting of two letters in upper case
? ? ? ? validation.Field(&a.State, validation.Required, validation.Match(regexp.MustCompile("^[A-Z]{2}$"))),
? ? ? ? // State cannot be empty, and must be a string consisting of five digits
? ? ? ? validation.Field(&a.Zip, validation.Required, validation.Match(regexp.MustCompile("^[0-9]{5}$"))),
? ? )
}
func main() {
? ? a := Address{
? ? ? ? Street: "123",
? ? ? ? City:? ?"Unknown",
? ? ? ? State:? "Virginia",
? ? ? ? Zip:? ? "12345",
? ? }
? ? err := a.Validate()
? ? fmt.Println(err)
? ? // Output:
? ? // Street: the length must be between 5 and 50; State: must be in a valid format.
}
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