Omitempty Nested Structs in ValidateMap

[jhuynh-cb]

Hello, is it possible to omitempty nested structs when the rules are defined in a map[string]interface{} like below? It seems like the default is for the struct to always be required. If this is not possible, it seems like an alternative approach would be to define a struct with specific validations that enforce which fields are optional.

package main

import (
	"fmt"
	"github.com/go-playground/validator/v10"
)

func main() {
	validate := validator.New()

	rule := map[string]interface{}{
		"testField": "required",
		// I want this person field to be omitempty
		"person": map[string]interface{}{
			"name": "required",
			"age":  "required,gt=0",
		},
	}

	testData := map[string]interface{}{
		"testField": 123,
	}

	if len(validate.ValidateMap(testData, rule)) == 0 {
		fmt.Println("Valid")
	} else {
		fmt.Println("Invalid")
	}

}

[nodivbyzero]

Define a nested struct, and the rule will definitely work.

validator/_examples/struct-map-rules-validation/main.go

Lines 61 to 89 in 2cce309

	func validateStructNested() {
	data := Data{
	Name: "11sdfddd111",
	Email: "[email protected]",
	Details: &Details{
	Salary: "1000",
	},
	}
	rules1 := map[string]string{
	"Name": "min=4,max=6",
	"Email": "required,email",
	"Details": "required",
	}
	rules2 := map[string]string{
	"Salary": "number",
	"FamilyMembers": "required",
	}
	rules3 := map[string]string{
	"FatherName": "required,min=4,max=32",
	"MotherName": "required,min=4,max=32",
	}
	validate.RegisterStructValidationMapRules(rules1, Data{})
	validate.RegisterStructValidationMapRules(rules2, Details{})
	validate.RegisterStructValidationMapRules(rules3, FamilyMembers{})
	err := validate.Struct(data)