Go Validator

Go Validator is a simple package for validating structs, email addresses, URLs, IP addresses, and empty fields in Go. It also provides a way to validate struct fields using struct tags.

Installation

To use this package, you need to have Go installed and set up. Then you can run the following command to add the package to your project:

go get github.com/patrickkabwe/go-validator

Features

• 📧 Email validation
• 🌐 URL validation
• 🌐 IP address validation
• 📝 Empty field validation
• 📦 Struct validation using struct tags
• 📊 Map, Slice, Embedded Struct validation (Coming Soon)

Usage

Import the validator package into your Go code:

import "github.com/patrickkabwe/go-validator"

Creating a Validator

To create a new instance of the Validator interface, use the New() function:

v := validator.New()

Validating Email Addresses

To check if a string is a valid email address, use the IsEmail() method:

ok, err := v.IsEmail(email)
if err != nil {
    // handle the error
}

Checking for Empty Fields

To validate if a string is empty, use the IsEmpty() method:

var input = "" // empty string
var input = "John Doe" // non-empty string

ok, err := v.IsEmpty(input)
if err != nil {
    // handle the error
}

Validating URLs

To validate if a string is a valid URL, use the IsURL() method:

var input = "https://example.com"

ok, err := v.IsURL(input)
if err != nil {
    // handle the error
}

Validating IP Addresses

To validate if a string is a valid IP address, use the IsIP() method:

var input = "127.0.0.1"

ok, err := v.IsIP(input)
if err != nil {
    // handle the error
}

Validating Structs

To perform structural validation on a struct, use the ValidateStruct() method. It checks for fields with validate tags and returns a slice of errors:

type User struct {
    Name  string `validate:"required"`
    Email string `validate:"required,email"`
}

input := User{
    Name:  "John Doe",
    Email: "[email protected]",
}

errors := v.ValidateStruct(input)
if len(errors) > 0 {
    // handle the validation errors
}

Contributing

Contributions to this package are welcome. Feel free to submit issues and pull requests on the GitHub repository.

License

This package is licensed under the MIT License. See the LICENSE file for more information.