niki/vendor/github.com/go-ozzo/ozzo-validation/not_nil.go

33 lines
819 B
Go

// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import "errors"
// NotNil is a validation rule that checks if a value is not nil.
// NotNil only handles types including interface, pointer, slice, and map.
// All other types are considered valid.
var NotNil = &notNilRule{message: "is required"}
type notNilRule struct {
message string
}
// Validate checks if the given value is valid or not.
func (r *notNilRule) Validate(value interface{}) error {
_, isNil := Indirect(value)
if isNil {
return errors.New(r.message)
}
return nil
}
// Error sets the error message for the rule.
func (r *notNilRule) Error(message string) *notNilRule {
return &notNilRule{
message: message,
}
}