Fix a name conflict in scope metadata

lib/dao.js

@@ -1235,8 +1235,12 @@ var defineScope = require('./scope.js').defineScope;
  * @param {ModelClass} [targetClass] The model class for the query, default to
  * the declaring model
  */
-DataAccessObject.scope = function (name, query, targetClass) {
-  defineScope(this, targetClass || this, name, query);
+DataAccessObject.scope = function (name, query, targetClass, methods, options) {
+  var cls = this;
+  if (options && options.isStatic === false) {
+    cls = cls.prototype;
+  }
+  defineScope(cls, targetClass || cls, name, query, methods, options);
 };
 
 /*

lib/datasource.js

@@ -378,7 +378,7 @@ function isModelDataSourceAttached(model) {
 DataSource.prototype.defineScopes = function (modelClass, scopes) {
   if(scopes) {
     for(var s in scopes) {
-      defineScope(modelClass, modelClass, s, scopes[s]);
+      defineScope(modelClass, modelClass, s, scopes[s], {}, scopes[s].options);
     }
   }
 };

lib/scope.js

@@ -8,8 +8,9 @@ exports.defineScope = defineScope;
 exports.mergeQuery = mergeQuery;
 
 function ScopeDefinition(definition) {
-  this.modelFrom = definition.modelFrom || definition.sourceModel;
-  this.modelTo = definition.modelTo || definition.targetModel;
+  this.isStatic = definition.isStatic;
+  this.modelFrom = definition.modelFrom;
+  this.modelTo = definition.modelTo || definition.modelFrom;
   this.name = definition.name;
   this.params = definition.params;
   this.methods = definition.methods;
@@ -80,7 +81,11 @@ function defineScope(cls, targetClass, name, params, methods, options) {
     }
   }
 
+  options = options || {};
+  // Check if the cls is the class itself or its prototype
+  var isStatic = (typeof cls === 'function') || options.isStatic || false;
   var definition = new ScopeDefinition({
+    isStatic: isStatic,
     modelFrom: cls,
     modelTo: targetClass,
     name: name,
@@ -89,8 +94,13 @@ function defineScope(cls, targetClass, name, params, methods, options) {
     options: options || {}
   });
 
-  cls.scopes = cls.scopes || {};
-  cls.scopes[name] = definition;
+  if(isStatic) {
+    cls.scopes = cls.scopes || {};
+    cls.scopes[name] = definition;
+  } else {
+    cls.constructor.scopes = cls.constructor.scopes || {};
+    cls.constructor.scopes[name] = definition;
+  }
 
   // Define a property for the scope
   Object.defineProperty(cls, name, {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "loopback-datasource-juggler",
-  "version": "2.3.0",
+  "version": "2.3.1",
   "description": "LoopBack DataSoure Juggler",
   "keywords": [
     "StrongLoop",