[Question] How do I validate slice of struct inside a struct?

[budimanjojo]

System (please complete the following information):

• OS: linux
• GO Version: 1.21
• Pkg Version: 1.5.1

Describe the bug

A clear and concise description of what the bug is.

To Reproduce

package main

import (
        "fmt"

        "github.com/gookit/validate"
)

type Config struct {
        Nodes []Node
}

type Node struct {
        Name string `validate:"required_with:Nodes..Location"`
        Location string
}

func main() {
        data := &Config{
                Nodes: []Node{
                        {
                                Name: "node1"
                                Location: "A",
                        },
                        {
                        },
                },
        }

        v := validate.Struct(data)
        v.StopOnError = false
        if v.Validate() {
                fmt.Println("Good config")
        } else {
                fmt.Println(v.Errors)
        }
}

The above resulted in:

Nodes.1.Name:
 required_with: Nodes.1.Name field is required when [Nodes.Location] is present

I have tried with required_without and required_unless. I also tried using Nodes.Location as the field too and nothing works.

Expected behavior

Nodes.1.Name shouldn't fail because it doesn't have Location field set.

Screenshots

If applicable, add screenshots to help explain your problem.

Additional context

I can actually fix this by having a custom validator on the Nodes like this:

package main

import (
        "fmt"

        "github.com/gookit/validate"
)

type Config struct {
        Nodes []Node `validate:"customFunction"`
}

type Node struct {
        Name string
        Location string
}

func (c Config) CustomFunction(nodes []Node) bool {
        for k := range nodes {
                if nodes[k].Location != "" && nodes[k].Name == "" {
                        return false
                }
        }
        return true
}

func (c Config) Messages() map[string]string {
        return validate.MS{
                "customFunction": "each {field} needs `Name` set if `Location` is set",
        }
}

But I maybe there's a better way to do this? Or at least I can return the field on c.CustomFunction() so I can have a nice output like this: Nodes.1.Name is required if Nodes.1.Location is not empty.