Error when using custom filter with pointer to slice of strings

[kaptinlin]

System (please complete the following information):

• OS: linux
• GO Version: 1.21.0
• Pkg Version: the master latest

Describe the bug

When using a custom filter ptrTrimStrings to trim whitespace from each string in a pointer to a slice of strings, the validation fails with a type conversion error.

To Reproduce

package main

import (
	"strings"
	"github.com/gookit/validate"
)

func main() {
	validate.AddFilters(validate.M{
		"ptrTrimStrings": func(val *[]string) *[]string {
			trimmedSlice := make([]string, len(*val))
			for i, str := range *val {
				trimmedSlice[i] = strings.TrimSpace(str)
			}
			return &trimmedSlice
		},
	})

	type Request struct {
		PtrStringSlice *[]string `json:"string_slice" filter:"ptrTrimStrings" validate:"strings"`
	}
	stringSlice := []string{" foobar "}
	v := validate.New(&Request{
		PtrStringSlice: &stringSlice,
	})

	if err := v.Validate(); err != nil {
		panic(err)
	}
}

Expected behavior

The custom filter ptrTrimStrings should trim the whitespace from each string in the slice without any errors, and the validation should pass successfully.

Screenshots

N/A

Additional context

The error message received is:

"_filter": {
    "_filter": "PtrStringSlice: convert value type error"
}

This suggests that there might be an issue with the filter function's return type or the way the library handles the conversion of filtered values for pointer to slice fields.

[inhere]

hi @kaptinlin fixed in the latest codes.

[inhere]

Please upgrade to https://github.com/gookit/validate/releases/tag/v1.5.2