🐛error pointer receiver

error.go

@@ -0,0 +1,28 @@
+package helpers
+
+import "net/http"
+
+// Error represents an error that occurred while handling a request.
+type Error struct {
+	Code     int         `json:"code"`
+	Source   interface{} `json:"source,omitempty"`
+	Title    string      `json:"title,omitempty"`
+	Messages []string    `json:"messages"`
+}
+
+func (e *Error) Error() (errStr string) {
+	if len(e.Messages) != 0 {
+		errStr = e.Messages[0]
+	}
+	return
+}
+
+func NewError(code int, source string, message ...string) (err *Error) {
+	err = &Error{
+		Code:     code,
+		Source:   source,
+		Title:    http.StatusText(code),
+		Messages: message,
+	}
+	return
+}

model.go

@@ -1,30 +1,18 @@
 package helpers
 
 type ResponseForm struct {
-	Success    bool        `json:"success"`
-	Result     interface{} `json:"result,omitempty"`
-	Messages   []string    `json:"messages,omitempty"`
-	Errors     []Error     `json:"errors,omitempty"`
-	ResultInfo *ResultInfo `json:"result_info,omitempty"`
+	Success    bool            `json:"success"`
+	Result     interface{}     `json:"result,omitempty"`
+	Messages   []string        `json:"messages,omitempty"`
+	Errors     []ResponseError `json:"errors,omitempty"`
+	ResultInfo *ResultInfo     `json:"result_info,omitempty"`
 }
 
 // backward complatible
 type ResponseError struct {
 	*Error
 }
 
-// Error represents an error that occurred while handling a request.
-type Error struct {
-	Code    int         `json:"code"`
-	Source  interface{} `json:"source,omitempty"`
-	Title   string      `json:"title,omitempty"`
-	Message string      `json:"message"`
-}
-
-func (e *Error) Error() string {
-	return e.Message
-}
-
 type ResultInfo struct {
 	Page      int `json:"page"`
 	PerPage   int `json:"per_page"`

utils.go

@@ -202,12 +202,3 @@ func ExtractAuthString(authStr string) (auth HttpAuth, err error) {
 	}
 	return
 }
-
-func NewError(code int, source string, title string, message string) Error {
-	return Error{
-		Code:    code,
-		Source:  source,
-		Title:   title,
-		Message: message,
-	}
-}