From 09a0c5f1bb478d8134cc2396372d934e38ed9ad0 Mon Sep 17 00:00:00 2001
From: Adrian <adrianhyk@gmail.com>
Date: Sun, 1 Oct 2017 01:24:51 +0800
Subject: [PATCH] add JSONB type

---
 dialects/postgres/postgres.go | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/dialects/postgres/postgres.go b/dialects/postgres/postgres.go
index adeeec7b..fe71065b 100644
--- a/dialects/postgres/postgres.go
+++ b/dialects/postgres/postgres.go
@@ -6,6 +6,9 @@ import (
 
 	_ "github.com/lib/pq"
 	"github.com/lib/pq/hstore"
+	"encoding/json"
+	"errors"
+	"fmt"
 )
 
 type Hstore map[string]*string
@@ -52,3 +55,21 @@ func (h *Hstore) Scan(value interface{}) error {
 
 	return nil
 }
+
+// for Postgresql's JSONB data type
+type Jsonb struct {
+	json.RawMessage
+}
+
+func (j Jsonb) Value() (driver.Value, error){
+	return j.MarshalJSON()
+}
+
+func (j *Jsonb) Scan (value interface{}) error {
+	bytes, ok := value.([]byte);
+	if !ok {
+		return errors.New(fmt.Sprint("Failed to unmarshal JSONB value:", value))
+	}
+
+	return json.Unmarshal(bytes, j)
+}