update , refactory model

models/public/instagram.go

@@ -86,6 +86,21 @@ func GetInstagramByID(id string) (ig *InstagramModel, err error) {
 	return
 }
 
+// GetAllInstagram -
+func GetAllInstagram() (list []Instagram, err error) {
+	db := models.GetConn()
+	query := `
+		select id, lastpost, ctime, mtime
+		from "public"."instagram"
+		order by ctime 
+	`
+	err = db.Select(&list, query)
+	if err != nil {
+		return nil, err
+	}
+	return list, nil
+}
+
 // GetInstagramByChannelAndID -
 func GetInstagramByChannelAndID(id, channel string) (ig *InstagramModel, err error) {
 	if len(channel) == 0 || len(id) == 0 {