Files
gf/util/gvalid/internal/builtin/builtin_lowercase.go
2026-01-15 17:51:55 +08:00

40 lines
847 B
Go

// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
package builtin
import (
"errors"
"github.com/gogf/gf/v2/text/gregex"
)
// RuleLowercase implements `lowercase` rule:
// Lowercase alphabetic characters (a-z).
//
// Format: lowercase
type RuleLowercase struct{}
func init() {
Register(RuleLowercase{})
}
func (r RuleLowercase) Name() string {
return "lowercase"
}
func (r RuleLowercase) Message() string {
return "The {field} value `{value}` must be lowercase"
}
func (r RuleLowercase) Run(in RunInput) error {
ok := gregex.IsMatchString(`^[a-z]+$`, in.Value.String())
if ok {
return nil
}
return errors.New(in.Message)
}