Move remoting metadata from juggler to loopback

lib/models/model.js

@@ -184,12 +184,17 @@ Model.setup = function () {
   // resolve relation functions
   sharedClass.resolve(function resolver(define) {
     var relations = ModelCtor.relations;
-    if(!relations) return;
+    if (!relations) {
+      return;
+    }
     // get the relations
-    for(var relationName in relations) {
+    for (var relationName in relations) {
       var relation = relations[relationName];
-      if(relation.type === 'belongsTo') {
+      if (relation.type === 'belongsTo') {
         ModelCtor.belongsToRemoting(relationName, relation, define)
+      } else if (relation.type === 'hasMany') {
+        ModelCtor.hasManyRemoting(relationName, relation, define);
+        ModelCtor.scopeRemoting(relationName, relation, define);
       } else {
         ModelCtor.scopeRemoting(relationName, relation, define);
       }
@@ -342,6 +347,78 @@ Model.belongsToRemoting = function(relationName, relation, define) {
   }, fn);
 }
 
+Model.hasManyRemoting = function (relationName, relation, define) {
+  var findByIdFunc = this.prototype['__findById__' + relationName];
+  define('__findById__' + relationName, {
+    isStatic: false,
+    http: {verb: 'get', path: '/' + relationName + '/:fk'},
+    accepts: {arg: 'fk', type: 'any',
+      description: 'Foreign key for ' + relationName, required: true,
+      http: {source: 'path'}},
+    description: 'Find a related item by id for ' + relationName,
+    returns: {arg: 'result', type: relation.modelTo.modelName, root: true}
+  }, findByIdFunc);
+
+  var destroyByIdFunc = this.prototype['__destroyById__' + relationName];
+  define('__destroyById__' + relationName, {
+    isStatic: false,
+    http: {verb: 'delete', path: '/' + relationName + '/:fk'},
+    accepts: {arg: 'fk', type: 'any',
+      description: 'Foreign key for ' + relationName, required: true,
+      http: {source: 'path'}},
+    description: 'Delete a related item by id for ' + relationName,
+    returns: {}
+  }, destroyByIdFunc);
+
+  var updateByIdFunc = this.prototype['__updateById__' + relationName];
+  define('__updateById__' + relationName, {
+    isStatic: false,
+    http: {verb: 'put', path: '/' + relationName + '/:fk'},
+    accepts: {arg: 'fk', type: 'any',
+      description: 'Foreign key for ' + relationName, required: true,
+      http: {source: 'path'}},
+    description: 'Update a related item by id for ' + relationName,
+    returns: {arg: 'result', type: relation.modelTo.modelName, root: true}
+  }, updateByIdFunc);
+
+  if (relation.modelThrough) {
+    var addFunc = this.prototype['__link__' + relationName];
+    define('__link__' + relationName, {
+      isStatic: false,
+      http: {verb: 'put', path: '/' + relationName + '/rel/:fk'},
+      accepts: {arg: 'fk', type: 'any',
+        description: 'Foreign key for ' + relationName, required: true,
+        http: {source: 'path'}},
+      description: 'Add a related item by id for ' + relationName,
+      returns: {arg: relationName, type: relation.modelThrough.modelName, root: true}
+    }, addFunc);
+
+    var removeFunc = this.prototype['__unlink__' + relationName];
+    define('__unlink__' + relationName, {
+      isStatic: false,
+      http: {verb: 'delete', path: '/' + relationName + '/rel/:fk'},
+      accepts: {arg: 'fk', type: 'any',
+        description: 'Foreign key for ' + relationName, required: true,
+        http: {source: 'path'}},
+      description: 'Remove the ' + relationName + ' relation to an item by id',
+      returns: {}
+    }, removeFunc);
+
+    // FIXME: [rfeng] How to map a function with callback(err, true|false) to HEAD?
+    // true --> 200 and false --> 404?
+    var existsFunc = this.prototype['__exists__' + relationName];
+    define('__exists__' + relationName, {
+      isStatic: false,
+      http: {verb: 'head', path: '/' + relationName + '/rel/:fk'},
+      accepts: {arg: 'fk', type: 'any',
+        description: 'Foreign key for ' + relationName, required: true,
+        http: {source: 'path'}},
+      description: 'Check the existence of ' + relationName + ' relation to an item by id',
+      returns: {}
+    }, existsFunc);
+  }
+};
+
 Model.scopeRemoting = function(relationName, relation, define) {
   var toModelName = relation.modelTo.modelName;