refactor find & argsArePrimaryKeys a bit

lib/dao-factory.js

@@ -119,21 +119,24 @@ module.exports = (function() {
     var start = tk.time();
     // no options defined?
     // return an emitter which emits null
-    if([null, undefined].indexOf(options) > -1) {
+    if([null, undefined].indexOf(options) !== -1) {
       return new Utils.CustomEventEmitter(function(emitter) {
         setTimeout(function() { emitter.emit('success', null) }, 10)
       }).run()
     }
 
+    var primaryKeys = this.primaryKeys;
+
     // options is not a hash but an id
     if(typeof options === 'number') {
       options = { where: options }
-    } else if (Utils.argsArePrimaryKeys(arguments, this.primaryKeys)) {
+    } else if (!Utils._.isEmpty(primaryKeys) && Utils.argsArePrimaryKeys(arguments, primaryKeys)) {
         var where = {}
           , self  = this
+          , keys = Utils._.keys(primaryKeys)
 
         Utils._.each(arguments, function(arg, i) {
-          var key = Utils._.keys(self.primaryKeys)[i]
+          var key = keys[i]
           where[key] = arg
         })
 
@@ -231,7 +234,7 @@ module.exports = (function() {
   DAOFactory.prototype.__defineGetter__('primaryKeys', function() {
     var result = {}
     Utils._.each(this.attributes, function(dataTypeString, attributeName) {
-      if((attributeName != 'id') && (dataTypeString.indexOf('PRIMARY KEY') > -1)) {
+      if((attributeName != 'id') && (dataTypeString.indexOf('PRIMARY KEY') !== -1)) {
         result[attributeName] = dataTypeString
       }
     })

lib/utils.js

@@ -66,17 +66,18 @@ var Utils = module.exports = {
     ].join(" ")
   },
   argsArePrimaryKeys: function(args, primaryKeys) {
-    return false;
     var result = (args.length == Utils._.keys(primaryKeys).length)
+    if (result) {
       Utils._.each(args, function(arg) {
         if(result) {
-        if(['number', 'string'].indexOf(typeof arg) > -1)
+          if(['number', 'string'].indexOf(typeof arg) !== -1)
             result = true
           else
             result = (arg instanceof Date)
 
         }
       })
+    }
     return result
   },
   combineTableNames: function(tableName1, tableName2) {