forked from ebhomengo/niki
45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
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// Copyright 2016 Qiang Xue. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package validation
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// ErrNotNilRequired is the error that returns when a value is Nil.
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var ErrNotNilRequired = NewError("validation_not_nil_required", "is required")
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// NotNil is a validation rule that checks if a value is not nil.
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// NotNil only handles types including interface, pointer, slice, and map.
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// All other types are considered valid.
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var NotNil = notNilRule{}
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type notNilRule struct {
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err Error
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}
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// Validate checks if the given value is valid or not.
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func (r notNilRule) Validate(value interface{}) error {
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_, isNil := Indirect(value)
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if isNil {
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if r.err != nil {
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return r.err
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}
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return ErrNotNilRequired
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}
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return nil
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}
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// Error sets the error message for the rule.
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func (r notNilRule) Error(message string) notNilRule {
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if r.err == nil {
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r.err = ErrNotNilRequired
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}
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r.err = r.err.SetMessage(message)
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return r
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}
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// ErrorObject sets the error struct for the rule.
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func (r notNilRule) ErrorObject(err Error) notNilRule {
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r.err = err
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return r
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}
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