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email_validator.go
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/
email_validator.go
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package validators
import (
"fmt"
"net/mail"
)
// Checks if the value is a validated email.
//
// Configuration parameters:
//
// - errorMessages (optional):
// - Invalid email.
// - value is not string.
//
// Input value (string): value to be validated.
//
// Usage examples:
//
// value := "emailexample@gmail.com"
// v.Email()(value) // Output: nil, false
//
// value = "emailexample"
// v.Email()(value) // Output: [error message], false
// v.Email("error")(value) // Output: "error", false
// v.Email("", "error2")(nil) // Output: "error2", false
func Email(
errorMessages ...string,
) Validator {
message := "Invalid email"
errorMessageLen := len(errorMessages)
if errorMessageLen > 0 && errorMessages[0] != "" {
message = errorMessages[0]
}
return func(value interface{}) (*string, bool) {
if _, ok := value.(string); !ok {
if errorMessageLen > 1 {
message = errorMessages[1]
} else {
message = fmt.Sprintf("The value is not a string: value is %T.", value)
}
return &message, false
}
_, err := mail.ParseAddress(value.(string))
if err != nil {
return &message, false
}
return nil, false
}
}