govalidator

Validate Golang request data with simple rules. Highly inspired by Laravel’s request validation.

Package govalidator

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Validate golang request data with simple rules. Highly inspired by Laravel’s request validation.

Installation

Install the package using

$ go get github.com/thedevsaddam/govalidator
// or
$ go get gopkg.in/thedevsaddam/govalidator.v1

Usage

To use the package import it in your *.go code

import "github.com/thedevsaddam/govalidator"
// or
import "gopkg.in/thedevsaddam/govalidator.v1"

Example

Validate form-datax-www-form-urlencoded and query params

package main

import (
	"encoding/json"
	"fmt"
	"net/http"

	"github.com/thedevsaddam/govalidator"
)

func handler(w http.ResponseWriter, r *http.Request) {
	rules := govalidator.MapData{
		"username": []string{"required", "between:3,8"},
		"email":    []string{"required", "min:4", "max:20", "email"},
		"web":      []string{"url"},
		"phone":    []string{"digits:11"},
		"agree":    []string{"bool"},
		"dob":      []string{"date"},
	}

	messages := govalidator.MapData{
		"username": []string{"required:আপনাকে অবশ্যই ইউজারনেম দিতে হবে", "between:ইউজারনেম অবশ্যই ৩-৮ অক্ষর হতে হবে"},
		"phone":    []string{"digits:ফোন নাম্বার অবশ্যই ১১ নম্বারের হতে হবে"},
	}

	opts := govalidator.Options{
		Request:         r,        // request object
		Rules:           rules,    // rules map
		Messages:        messages, // custom message map (Optional)
		RequiredDefault: true,     // all the field to be pass the rules
	}
	v := govalidator.New(opts)
	e := v.Validate()
	err := map[string]interface{}{"validationError": e}
	w.Header().Set("Content-type", "application/json")
	json.NewEncoder(w).Encode(err)
}

func main() {
	http.HandleFunc("/", handler)
	fmt.Println("Listening on port: 9000")
	http.ListenAndServe(":9000", nil)
}

Send request to the server using curl or postman: curl GET "http://localhost:9000?web=&phone=&zip=&dob=&agree="

Response

{
    "validationError": {
        "agree": [
            "The agree may only contain boolean value, string or int 0, 1"
        ],
        "dob": [
            "The dob field must be a valid date format. e.g: yyyy-mm-dd, yyyy/mm/dd etc"
        ],
        "email": [
            "The email field is required",
            "The email field must be a valid email address"
        ],
        "phone": [
            "ফোন নাম্বার অবশ্যই ১১ নম্বারের হতে হবে"
        ],
        "username": [
            "আপনাকে অবশ্যই ইউজারনেম দিতে হবে",
            "ইউজারনেম অবশ্যই ৩-৮ অক্ষর হতে হবে"
        ],
        "web": [
            "The web field format is invalid"
        ]
    }
}

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