From ec0a990a2b4552509170f0dbc02c486846732c3a Mon Sep 17 00:00:00 2001
From: Diogo Doreto <diogo.doreto@gmail.com>
Date: Fri, 13 Nov 2015 10:08:03 -0200
Subject: [PATCH] Add compatibility with Node v0.12

Node v0.12 doesn't have the Object.assign function
---
 lib/sql.js   |  5 +++--
 lib/utils.js | 18 ++++++++++++++++++
 2 files changed, 21 insertions(+), 2 deletions(-)
 create mode 100644 lib/utils.js

diff --git a/lib/sql.js b/lib/sql.js
index ceb94dc..23f576b 100644
--- a/lib/sql.js
+++ b/lib/sql.js
@@ -5,6 +5,7 @@ var Connector = require('./connector');
 var debug = require('debug')('loopback:connector:sql');
 var ParameterizedSQL = require('./parameterized-sql');
 var Transaction = require('./transaction');
+var assign = require('./utils').assign;
 
 module.exports = SQLConnector;
 
@@ -1067,10 +1068,10 @@ SQLConnector.prototype.buildJoins = function(model, where) {
     var modelToEscaped = this.tableEscaped(modelTo);
     var keyTo = rel.keyTo;
 
-    var innerWhere = Object.assign({}, where[key]);
+    var innerWhere = assign({}, where[key]);
     var innerIdField = {};
     innerIdField[keyTo] = true;
-    innerWhere.fields = Object.assign({}, innerWhere.fields, innerIdField);
+    innerWhere.fields = assign({}, innerWhere.fields, innerIdField);
 
     var condition = this.columnEscaped(model, keyFrom) + '=' +
       this.columnEscaped(modelTo, keyTo);
diff --git a/lib/utils.js b/lib/utils.js
new file mode 100644
index 0000000..37e0e57
--- /dev/null
+++ b/lib/utils.js
@@ -0,0 +1,18 @@
+var _hasOwnProp = Object.prototype.hasOwnProperty;
+
+/**
+ * Object.assign polyfill
+ */
+var assign = Object.assign || function(target) {
+  for (var i = 1; i < arguments.length; i++) {
+    var source = arguments[i];
+    for (var key in source) {
+      if (_hasOwnProp.call(source, key)) {
+        target[key] = source[key];
+      }
+    }
+  }
+  return target;
+};
+
+exports.assign = assign;