From 95b6f323a880d9034cacf048f0db0c783ca772e9 Mon Sep 17 00:00:00 2001
From: Cody Ley-Han <codyleyhan@gmail.com>
Date: Wed, 22 Aug 2018 13:47:34 -0700
Subject: [PATCH] finds fields by json struct tag

---
 codegen/util.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/codegen/util.go b/codegen/util.go
index fae94adead..4f6dc66b01 100644
--- a/codegen/util.go
+++ b/codegen/util.go
@@ -3,6 +3,7 @@ package codegen
 import (
 	"fmt"
 	"go/types"
+	"reflect"
 	"regexp"
 	"strings"
 
@@ -128,6 +129,14 @@ func findField(typ *types.Struct, name string) *types.Var {
 		if strings.EqualFold(field.Name(), name) {
 			return field
 		}
+
+		tags := reflect.StructTag(typ.Tag(i))
+
+		if val, ok := tags.Lookup("json"); ok {
+			if strings.EqualFold(val, name) {
+				return field
+			}
+		}
 	}
 	return nil
 }