From 3714556d17dd607b4c1d4e6c6dfc4b29baeaaf9b Mon Sep 17 00:00:00 2001
From: Thanakrit Nawasaykaew <thanakrit.nsk@gmail.com>
Date: Thu, 28 Jul 2022 17:05:11 +0700
Subject: [PATCH] add reflect struct field

---
 cache.go     | 24 +++++++++++++-----------
 errors.go    |  9 +++++++++
 validator.go |  6 ++++++
 3 files changed, 28 insertions(+), 11 deletions(-)

diff --git a/cache.go b/cache.go
index 7b84c91..c1ba710 100644
--- a/cache.go
+++ b/cache.go
@@ -75,11 +75,12 @@ type cStruct struct {
 }
 
 type cField struct {
-	idx        int
-	name       string
-	altName    string
-	namesEqual bool
-	cTags      *cTag
+	idx         int
+	name        string
+	altName     string
+	namesEqual  bool
+	cTags       *cTag
+	structField reflect.StructField
 }
 
 type cTag struct {
@@ -120,7 +121,7 @@ func (v *Validate) extractStructCache(current reflect.Value, sName string) *cStr
 	var fld reflect.StructField
 	var tag string
 	var customName string
-	
+
 	for i := 0; i < numFields; i++ {
 
 		fld = typ.Field(i)
@@ -160,11 +161,12 @@ func (v *Validate) extractStructCache(current reflect.Value, sName string) *cStr
 		}
 
 		cs.fields = append(cs.fields, &cField{
-			idx:        i,
-			name:       fld.Name,
-			altName:    customName,
-			cTags:      ctag,
-			namesEqual: fld.Name == customName,
+			idx:         i,
+			name:        fld.Name,
+			altName:     customName,
+			cTags:       ctag,
+			namesEqual:  fld.Name == customName,
+			structField: fld,
 		})
 	}
 	v.structCache.Set(typ, cs)
diff --git a/errors.go b/errors.go
index 9a1b1ab..d24bcea 100644
--- a/errors.go
+++ b/errors.go
@@ -149,6 +149,8 @@ type FieldError interface {
 	// eg. time.Time's type is time.Time
 	Type() reflect.Type
 
+	ReflectStructField() reflect.StructField
+
 	// Translate returns the FieldError's translated error
 	// from the provided 'ut.Translator' and registered 'TranslationFunc'
 	//
@@ -179,6 +181,7 @@ type fieldError struct {
 	param          string
 	kind           reflect.Kind
 	typ            reflect.Type
+	structField    reflect.StructField
 }
 
 // Tag returns the validation tag that failed.
@@ -227,6 +230,12 @@ func (fe *fieldError) StructField() string {
 	return fe.structNs[len(fe.structNs)-int(fe.structfieldLen):]
 }
 
+// ReflectStructField get reflect struct field
+func (fe *fieldError) ReflectStructField() reflect.StructField {
+	// return fe.structField
+	return fe.structField
+}
+
 // Value returns the actual field's value in case needed for creating the error
 // message
 func (fe *fieldError) Value() interface{} {
diff --git a/validator.go b/validator.go
index 80da095..acb0cfa 100644
--- a/validator.go
+++ b/validator.go
@@ -129,6 +129,7 @@ func (v *validate) traverseField(ctx context.Context, parent reflect.Value, curr
 						structfieldLen: uint8(len(cf.name)),
 						param:          ct.param,
 						kind:           kind,
+						structField:    cf.structField,
 					},
 				)
 				return
@@ -154,6 +155,7 @@ func (v *validate) traverseField(ctx context.Context, parent reflect.Value, curr
 						param:          ct.param,
 						kind:           kind,
 						typ:            current.Type(),
+						structField:    cf.structField,
 					},
 				)
 				return
@@ -199,6 +201,7 @@ func (v *validate) traverseField(ctx context.Context, parent reflect.Value, curr
 								param:          ct.param,
 								kind:           kind,
 								typ:            typ,
+								structField:    cf.structField,
 							},
 						)
 						return
@@ -413,6 +416,7 @@ OUTER:
 								param:          ct.param,
 								kind:           kind,
 								typ:            typ,
+								structField:    cf.structField,
 							},
 						)
 
@@ -433,6 +437,7 @@ OUTER:
 								param:          ct.param,
 								kind:           kind,
 								typ:            typ,
+								structField:    cf.structField,
 							},
 						)
 					}
@@ -474,6 +479,7 @@ OUTER:
 						param:          ct.param,
 						kind:           kind,
 						typ:            typ,
+						structField:    cf.structField,
 					},
 				)