forked from gin-gonic/gin
/
default_validator.go
50 lines (41 loc) · 1.07 KB
/
default_validator.go
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// Copyright 2017 Manu Martinez-Almeida. All rights reserved.
// Use of this source code is governed by a MIT style
// license that can be found in the LICENSE file.
package binding
import (
"reflect"
"sync"
"gopkg.in/go-playground/validator.v8"
)
type defaultValidator struct {
once sync.Once
validate *validator.Validate
}
var _ StructValidator = &defaultValidator{}
func (v *defaultValidator) ValidateStruct(obj interface{}) error {
if kindOfData(obj) == reflect.Struct {
v.lazyinit()
if err := v.validate.Struct(obj); err != nil {
return error(err)
}
}
return nil
}
func (v *defaultValidator) RegisterValidation(key string, fn validator.Func) error {
v.lazyinit()
return v.validate.RegisterValidation(key, fn)
}
func (v *defaultValidator) lazyinit() {
v.once.Do(func() {
config := &validator.Config{TagName: "binding"}
v.validate = validator.New(config)
})
}
func kindOfData(data interface{}) reflect.Kind {
value := reflect.ValueOf(data)
valueType := value.Kind()
if valueType == reflect.Ptr {
valueType = value.Elem().Kind()
}
return valueType
}