fix(helper): handle null.String with 'null' value in update extraction

radityaapratamaa · radityaapratamaa · commit 7f016004a73b · 2026-06-04T16:42:16.000+07:00
diff --git a/go/helper/struct_cache.go b/go/helper/struct_cache.go
@@ -317,10 +317,13 @@ func ExtractUpdateValues(tmpl *UpdateTemplateInfo, structVal reflect.Value, anot
 			continue
 		}
 
-		// Handle "null" string literal
+		// Handle "null" string literal — both raw string and null.String types
 		if str, ok := value.(string); ok && str == strNull { //nolint:errcheck
 			value = null.String{} //nolint:errcheck
 		}
+		if ns, ok := value.(null.String); ok && ns.Valid && ns.String == strNull { //nolint:errcheck
+			value = null.String{} //nolint:errcheck
+		}
 
 		result.Cols = append(result.Cols, fp.ColName+"=?")
 		result.Values = append(result.Values, value)

Original file line number	Diff line number	Diff line change
`@@ -317,10 +317,13 @@ func ExtractUpdateValues(tmpl *UpdateTemplateInfo, structVal reflect.Value, anot`
`317`	`317`	`continue`
`318`	`318`	`}`
`319`	`319`
`320`		`- // Handle "null" string literal`
	`320`	`+ // Handle "null" string literal — both raw string and null.String types`
`321`	`321`	`if str, ok := value.(string); ok && str == strNull { //nolint:errcheck`
`322`	`322`	`value = null.String{} //nolint:errcheck`
`323`	`323`	`}`
	`324`	`+ if ns, ok := value.(null.String); ok && ns.Valid && ns.String == strNull { //nolint:errcheck`
	`325`	`+ value = null.String{} //nolint:errcheck`
	`326`	`+ }`
`324`	`327`
`325`	`328`	`result.Cols = append(result.Cols, fp.ColName+"=?")`
`326`	`329`	`result.Values = append(result.Values, value)`