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hvalid is a lightweight validation library written in Go language. It provides a custom validator interface and a series of common validation functions to help developers quickly implement data validation.
- Generic support: Can validate any type of data, including basic types, structs, slices, etc.
- Easy to use: Offers a concise API for developers to quickly perform parameter validation.
- Extensible: Allows custom validation rules to meet different validation needs.
- Friendly error messages: Returns clear error messages when validation fails, making it easy for developers to locate issues.
Install using the go get command:
go get github.com/lyonnee/hvalidimport (
"errors"
"github.com/lyonnee/hvalid"
)
func main() {
// Validate string length
err := hvalid.Validate[string]("hello", hvalid.MinLen[string](3))
if err != nil {
// Handle error
}
// Validate number range
err = hvalid.Validate[int](10, hvalid.Min(5), hvalid.Max(15))
if err != nil {
// Handle error
}
}type User struct {
Name string
Email string
Age int
}
func UserValidator() hvalid.ValidatorFunc[User] {
return hvalid.ValidatorFunc[User](func(user User) error {
if user.Age < 18 {
return errors.New("Age must be greater than 18")
}
return hvalid.Validate[string](user.Email, hvalid.Email())
})
}
func main() {
user := User{
Name: "Zhang San",
Email: "[email protected]",
Age: 20,
}
err := hvalid.Validate[User](user, UserValidator())
if err != nil {
// Handle error
}
}func IsPositive(errMsg ...string) hvalid.ValidatorFunc[int] {
return hvalid.ValidatorFunc[int](func(num int) error {
if num <= 0 {
if len(errMsg) > 0 {
return errors.New(errMsg[0])
}
return errors.New("The number must be positive")
}
return nil
})
}
func main() {
err := hvalid.Validate[int](10, IsPositive())
if err != nil {
// Handle error
}
}The project includes unit tests, run all tests with the go test command:
go test ./...Issues and pull requests are welcome to improve hvalid.
hvalid is released under the MIT License. See the LICENSE file for more information.
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