Refactor idEquals to utils

lib/dao.js

@@ -19,6 +19,7 @@ var utils = require('./utils');
 var fieldsToArray = utils.fieldsToArray;
 var removeUndefined = utils.removeUndefined;
 var setScopeValuesFromWhere = utils.setScopeValuesFromWhere;
+var idEquals = utils.idEquals;
 var mergeQuery = utils.mergeQuery;
 var util = require('util');
 var assert = require('assert');
@@ -2275,27 +2276,6 @@ DataAccessObject.prototype.unsetAttribute = function unsetAttribute(name, nullif
   }
 };
 
-// Compare two id values to decide if updateAttributes is trying to change
-// the id value for a given instance
-function idEquals(id1, id2) {
-  if (id1 === id2) {
-    return true;
-  }
-  // Allows number/string conversions
-  if ((typeof id1 === 'number' && typeof id2 === 'string') ||
-    (typeof id1 === 'string' && typeof id2 === 'number')) {
-    return id1 == id2;
-  }
-  // For complex id types such as MongoDB ObjectID
-  id1 = JSON.stringify(id1);
-  id2 = JSON.stringify(id2);
-  if (id1 === id2) {
-    return true;
-  }
-
-  return false;
-}
-
 /**
  * Update set of attributes.
  * Performs validation before updating.

lib/utils.js

@@ -14,6 +14,7 @@ exports.createPromiseCallback = createPromiseCallback;
 exports.uniq = uniq;
 exports.toRegExp = toRegExp;
 exports.hasRegExpFlags = hasRegExpFlags;
+exports.idEquals = idEquals;
 
 var traverse = require('traverse');
 var assert = require('assert');
@@ -389,7 +390,7 @@ function mergeSettings(target, src) {
           // The source item value is an object
           if (target == null || typeof target !== 'object' ||
             target[key] == null) {
-            // If target is not an object or target item value 
+            // If target is not an object or target item value
             dst[key] = srcValue;
           } else {
             dst[key] = mergeSettings(target[key], src[key]);
@@ -551,3 +552,24 @@ function hasRegExpFlags(regex) {
     regex.toString().split('/').pop() :
     !!regex.match(/.*\/.+$/);
 }
+
+// Compare two id values to decide if updateAttributes is trying to change
+// the id value for a given instance
+function idEquals(id1, id2) {
+  if (id1 === id2) {
+    return true;
+  }
+  // Allows number/string conversions
+  if ((typeof id1 === 'number' && typeof id2 === 'string') ||
+    (typeof id1 === 'string' && typeof id2 === 'number')) {
+    return id1 == id2;
+  }
+  // For complex id types such as MongoDB ObjectID
+  id1 = JSON.stringify(id1);
+  id2 = JSON.stringify(id2);
+  if (id1 === id2) {
+    return true;
+  }
+
+  return false;
+}