Is it possible to have regex check in custom type in Golang?-CodePudding

I already have a struct declared as

type User struct {
ID        int       `json:"id"`
Email     string    `json:"email"`
FirstName string    `json:"first_name"`
LastName  string    `json:"last_name"`
CreatedAt time.Time `json:"created_at"`
UpdatedAt time.Time `json:"updated_at"`
UserName  string    `json:"username"`
ImageURL  string    `json:"image_url"`
CountryCode string    `json:"country_code"`
PhoneNumber string    `json:"phone_number"`

}

and I want to have custom types and add regex check for these declared types! For ex for email I intend to have a custom type email which has regex check to verify if the data is proper email or not!

CodePudding user response：

You can validate your email using Go-validator lib

func validateVariable() {

myEmail := "joeybloggs.gmail.com"

errs := validate.Var(myEmail, "required,email")

if errs != nil {
    fmt.Println(errs) // output: Key: "" Error:Field validation for "" failed on the "email" tag
    return
}
}

or using its struct validator

   func validateStruct() {
         type User struct {
            Email string `json:"email" validate:"email"`
         }
    
        u := &User{email: "[email protected]"}
    
        err := validate.Struct(user)
        //check err

    }

CodePudding user response：

Yes, You can use regex in golang

using regexp library

 match, _ := regexp.MatchString("/^[^\s@] @[^\s@] \.[^\s@] $/", "[email protected]")