validation - 如何将 pkg 服务/数据库连接集成到 util pkg 验证器？

Question

database从内部获取数据（字段名称）的方法是validator.go什么？

main.go

package main

import (
    "v/utils"

    "os"

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

func init() {
    env.Load(".env")
}

func main() {
    e := echo.New()

    e.Validator = &utils.CustomValidator{Validator: validator.New()}

    e.Logger.Fatal(e.Start("1234"))
}

验证器.go

package utils

import (
    "unicode"
    "unicode/utf8"

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

// CustomValidator is type setting of third party validator
type CustomValidator struct {
    Validator *validator.Validate
}

// Init validator
func (cv *CustomValidator) Init() {
    cv.Validator.RegisterValidation("name", func(fl validator.FieldLevel) bool {
        // ******
        // **Need to fetch the `names` from database and check any duplicate**
        // *******
        return true
    })
}

// Validate Data
func (cv *CustomValidator) Validate(i interface{}) error {
    return cv.Validator.Struct(i)
}