api-dockerization/internal/models/user.go

package models

import (
	"regexp"

	"github.com/go-playground/validator/v10"
	"gorm.io/gorm"
)

// User struct with validation tags
type User struct {
	gorm.Model
	FirstName string `json:"first_name" validate:"required,min=2,max=40,uppercase"`
	LastName  string `json:"last_name" validate:"required,min=2,max=40,uppercase"`
	Sex       string `json:"sex" validate:"required,oneof=H M"`
	BirthDate string `json:"birth_date" validate:"required,birthdate"` //dd-mm-yyyy
}

// Validate validates the User struct
func (u *User) Validate() error {
	validate := validator.New()
	// Custom validation for BirthDate
	validate.RegisterValidation("birthdate", func(fl validator.FieldLevel) bool {
		re := regexp.MustCompile(`^(0[1-9]|[12][0-9]|3[01])-(0[1-9]|1[0-2])-\d{4}$`)
		return re.MatchString(fl.Field().String())
	})
	// Custom validation for Uppercase
	validate.RegisterValidation("uppercase", func(fl validator.FieldLevel) bool {
		re := regexp.MustCompile(`^[A-Z]+$`) // Permite solo letras mayúsculas
		return re.MatchString(fl.Field().String())
	})
	return validate.Struct(u)
}