Fix the model name for hasMany/through relation

lib/model.js

@@ -457,7 +457,7 @@ Model.hasManyRemoting = function(relationName, relation, define) {
       description: 'Foreign key for ' + relationName, required: true,
       http: {source: 'path'}},
     description: 'Delete a related item by id for ' + relationName,
-    returns: {}
+    returns: []
   }, destroyByIdFunc);
 
   var updateByIdFunc = this.prototype['__updateById__' + relationName];
@@ -502,7 +502,7 @@ Model.hasManyRemoting = function(relationName, relation, define) {
         description: 'Foreign key for ' + relationName, required: true,
         http: {source: 'path'}},
       description: 'Remove the ' + relationName + ' relation to an item by id',
-      returns: {}
+      returns: []
     }, removeFunc);
 
     // FIXME: [rfeng] How to map a function with callback(err, true|false) to HEAD?
@@ -542,6 +542,15 @@ Model.scopeRemoting = function(scopeName, scope, define) {
   var isStatic = scope.isStatic;
   var toModelName = scope.modelTo.modelName;
 
+  // https://github.com/strongloop/loopback/issues/811
+  // Check if the scope is for a hasMany relation
+  var relation = this.relations[scopeName];
+  if (relation && relation.modelTo) {
+    // For a relation with through model, the toModelName should be the one
+    // from the target model
+    toModelName = relation.modelTo.modelName;
+  }
+
   define('__get__' + scopeName, {
     isStatic: isStatic,
     http: {verb: 'get', path: '/' + pathName},

test/relations.integration.js

@@ -411,8 +411,8 @@ describe('relations - integration', function () {
       });
 
       lt.describe.whenCalledRemotely('DELETE', '/api/physicians/:id/patients/rel/:fk', function () {
-        it('should succeed with statusCode 200', function () {
+        it('should succeed with statusCode 204', function () {
-          assert.equal(this.res.statusCode, 200);
+          assert.equal(this.res.statusCode, 204);
         });
 
         it('should remove the record in appointment', function (done) {
@@ -469,8 +469,8 @@ describe('relations - integration', function () {
       });
 
       lt.describe.whenCalledRemotely('DELETE', '/api/physicians/:id/patients/:fk', function () {
-        it('should succeed with statusCode 200', function () {
+        it('should succeed with statusCode 204', function () {
-          assert.equal(this.res.statusCode, 200);
+          assert.equal(this.res.statusCode, 204);
         });
 
         it('should remove the record in appointment', function (done) {

test/remoting.integration.js

@@ -66,33 +66,176 @@ describe('remoting - integration', function () {
     });
   });
 
-  describe('Model', function() {
+  describe('Model shared classes', function() {
-    it('has expected remote methods', function() {
+    function formatReturns(m) {
-      var storeClass = app.handler('rest').adapter
+      var returns = m.returns;
+      if (!returns || returns.length === 0) {
+        return '';
+      }
+      var type = returns[0].type;
+      return type ? ':' + type : '';
+    }
+
+    function formatMethod(m) {
+      return [
+        m.name,
+        '(',
+        m.accepts.map(function(a) {
+          return a.arg + ':' + a.type
+        }).join(','),
+        ')',
+        formatReturns(m),
+        ' ',
+        m.getHttpMethod(),
+        ' ',
+        m.getFullPath()
+      ].join('');
+    }
+
+    function findClass(name) {
+      return app.handler('rest').adapter
         .getClasses()
-        .filter(function(c) { return c.name === 'store'; })[0];
+        .filter(function(c) {
+          return c.name === name;
+        })[0];
+    }
+
+    it('has expected remote methods', function() {
+      var storeClass = findClass('store');
       var methods = storeClass.methods
+        .filter(function(m) {
+          return m.name.indexOf('__') === -1;
+        })
         .map(function(m) {
-          return [
+          return formatMethod(m);
-            m.name + '()',
-            m.getHttpMethod(),
-            m.getFullPath()
-          ].join(' ');
         });
 
+      var expectedMethods = [
+        'create(data:object):store POST /stores',
+        'upsert(data:object):store PUT /stores',
+        'exists(id:any):boolean GET /stores/:id/exists',
+        'findById(id:any):store GET /stores/:id',
+        'find(filter:object):store GET /stores',
+        'findOne(filter:object):store GET /stores/findOne',
+        'updateAll(where:object,data:object) POST /stores/update',
+        'deleteById(id:any) DELETE /stores/:id',
+        'count(where:object):number GET /stores/count',
+        'prototype.updateAttributes(data:object):store PUT /stores/:id'
+      ];
+
       // The list of methods is from docs:
       // http://docs.strongloop.com/display/LB/Exposing+models+over+a+REST+API
-      expect(methods).to.include.members([
+      expect(methods).to.include.members(expectedMethods);
-        'create() POST /stores',
+    });
-        'upsert() PUT /stores',
+
-        'exists() GET /stores/:id/exists',
+    it('has expected remote methods for scopes', function() {
-        'findById() GET /stores/:id',
+      var storeClass = findClass('store');
-        'find() GET /stores',
+      var methods = storeClass.methods
-        'findOne() GET /stores/findOne',
+        .filter(function(m) {
-        'deleteById() DELETE /stores/:id',
+          return m.name.indexOf('__') === 0;
-        'count() GET /stores/count',
+        })
-        'prototype.updateAttributes() PUT /stores/:id',
+        .map(function(m) {
-      ]);
+          return formatMethod(m);
+        });
+
+      var expectedMethods = [
+        '__get__superStores(filter:object):store GET /stores/superStores',
+        '__create__superStores(data:store):store POST /stores/superStores',
+        '__delete__superStores() DELETE /stores/superStores',
+        '__count__superStores(where:object):number GET /stores/superStores/count'
+      ];
+
+      expect(methods).to.include.members(expectedMethods);
+    });
+
+
+    it('should have correct signatures for belongsTo methods',
+      function() {
+
+        var widgetClass = findClass('widget');
+        var methods = widgetClass.methods
+          .filter(function(m) {
+            return m.name.indexOf('prototype.__') === 0;
+          })
+          .map(function(m) {
+            return formatMethod(m);
+          });
+
+        var expectedMethods = [
+            'prototype.__get__store(refresh:boolean):store ' +
+            'GET /widgets/:id/store'
+        ];
+        expect(methods).to.include.members(expectedMethods);
+      });
+
+
+    it('should have correct signatures for hasMany methods',
+      function() {
+
+        var physicianClass = findClass('store');
+        var methods = physicianClass.methods
+          .filter(function(m) {
+            return m.name.indexOf('prototype.__') === 0;
+          })
+          .map(function(m) {
+            return formatMethod(m);
+          });
+
+        var expectedMethods = [
+              'prototype.__findById__widgets(fk:any):widget ' +
+              'GET /stores/:id/widgets/:fk',
+              'prototype.__destroyById__widgets(fk:any) ' +
+              'DELETE /stores/:id/widgets/:fk',
+              'prototype.__updateById__widgets(fk:any,data:widget):widget ' +
+              'PUT /stores/:id/widgets/:fk',
+              'prototype.__get__widgets(filter:object):widget ' +
+              'GET /stores/:id/widgets',
+              'prototype.__create__widgets(data:widget):widget ' +
+              'POST /stores/:id/widgets',
+              'prototype.__delete__widgets() ' +
+              'DELETE /stores/:id/widgets',
+              'prototype.__count__widgets(where:object):number ' +
+              'GET /stores/:id/widgets/count'
+        ];
+        expect(methods).to.include.members(expectedMethods);
+      });
+
+    it('should have correct signatures for hasMany-through methods',
+      function() {
+
+      var physicianClass = findClass('physician');
+      var methods = physicianClass.methods
+        .filter(function(m) {
+          return m.name.indexOf('prototype.__') === 0;
+        })
+        .map(function(m) {
+          return formatMethod(m);
+        });
+
+      var expectedMethods = [
+          'prototype.__findById__patients(fk:any):patient ' +
+          'GET /physicians/:id/patients/:fk',
+          'prototype.__destroyById__patients(fk:any) ' +
+          'DELETE /physicians/:id/patients/:fk',
+          'prototype.__updateById__patients(fk:any,data:patient):patient ' +
+          'PUT /physicians/:id/patients/:fk',
+          'prototype.__link__patients(fk:any,data:appointment):appointment ' +
+          'PUT /physicians/:id/patients/rel/:fk',
+          'prototype.__unlink__patients(fk:any) ' +
+          'DELETE /physicians/:id/patients/rel/:fk',
+          'prototype.__exists__patients(fk:any):boolean ' +
+          'HEAD /physicians/:id/patients/rel/:fk',
+          'prototype.__get__patients(filter:object):patient ' +
+          'GET /physicians/:id/patients',
+          'prototype.__create__patients(data:patient):patient ' +
+          'POST /physicians/:id/patients',
+          'prototype.__delete__patients() ' +
+          'DELETE /physicians/:id/patients',
+          'prototype.__count__patients(where:object):number ' +
+          'GET /physicians/:id/patients/count'
+      ];
+      expect(methods).to.include.members(expectedMethods);
     });
   });
+
 });