From 96c426601c00c73cc7cc87f8cbd7d8fb8777a151 Mon Sep 17 00:00:00 2001
From: wubin48435 <wubin48435@hundsun.com>
Date: Sun, 11 Aug 2024 13:45:19 +0800
Subject: [PATCH] fix form decode bug

---
 toolkit/form/_examples/decoder/full.go | 33 +++++++++++++++++++-------
 toolkit/form/form_decoder.go           |  1 +
 2 files changed, 26 insertions(+), 8 deletions(-)

diff --git a/toolkit/form/_examples/decoder/full.go b/toolkit/form/_examples/decoder/full.go
index 39d2d5fc..78d8e76d 100644
--- a/toolkit/form/_examples/decoder/full.go
+++ b/toolkit/form/_examples/decoder/full.go
@@ -57,17 +57,19 @@ func main() {
 	decoder.SetNamespaceSuffix("]")
 
 	// this simulates the results of http.Request's ParseForm() function
-	values := parseForm2()
+	values := parseForm3()
 
-	var user User
+	for i := 0; i < 20; i++ {
+		var user ParameterWrapper
 
-	// must pass a pointer
-	err := decoder.Decode(&user, values)
-	if err != nil {
-		log.Panic(err)
-	}
+		// must pass a pointer
+		err := decoder.Decode(&user, values)
+		if err != nil {
+			log.Panic(err)
+		}
 
-	fmt.Printf("%#v\n", user)
+		fmt.Printf("%#v\n", user)
+	}
 
 	//userMap := make(map[string]interface{})
 	//// must pass a pointer
@@ -153,3 +155,18 @@ func parseForm2() url.Values {
 		"f[1][0]":             []string{"value10"},
 	}
 }
+
+type A struct {
+	B string `json:"b" form:"b"`
+}
+
+type ParameterWrapper struct {
+	Parameter A `json:"parameter" form:"parameter"`
+}
+
+func parseForm3() url.Values {
+	// parameter[product_code]
+	return url.Values{
+		"parameter[b]": []string{"b"},
+	}
+}
diff --git a/toolkit/form/form_decoder.go b/toolkit/form/form_decoder.go
index 14e6ae8b..1273db4e 100644
--- a/toolkit/form/form_decoder.go
+++ b/toolkit/form/form_decoder.go
@@ -185,6 +185,7 @@ func (d *Decoder) Decode(v interface{}, values url.Values) (err error) {
 	}
 	dec.values = valuesCopy
 	dec.dm = dec.dm[0:0]
+	dec.decoded = dec.decoded[0:0]
 
 	val = val.Elem()
 	typ := val.Type()