blu

blu is struct value validation based on provided tags.

Note: As of the current version, "blu" is intended for personal use.

Usage

Install blu

go get github.com/n4x2/blu

Then import it:

import "github.com/n4x2/blu"

Define struct with validation tags:

type MyStruct struct {
    FieldA string `validate:"required"`
    // ...
}

Create a new validator instance:

v := blu.NewValidator()

Validate the struct using the created validator:

err := v.Validate(MyStruct)
if err != nil {
    // Handle error
}

Custom Rule

Create custom rule by implementing the Rule interface:

type CustomRule struct {}

func (r *CustomRule) Name() string {
    return "custom"
}

func (r *CustomRule) Validate(field string, value string, param string) error {
    // Implement your custom validation logic here.
    // Return an error if the validation fails.
    return nil
}

Register the custom rule:

customRule := &CustomRule{}
err := v.RegisterRule(customRule)
if err != nil {
    // Handle error (e.g., duplicated rule name).
}

Use the "custom" rule in struct validation tags:

type MyStruct struct {
    FieldA string `validate:"custom"`
    // ...
}