function

gistfile1.js

/** Context: We are going to create a sharebox system (an User has files & folder objects and can share it to his Team **/

// We have 4 models: File.js, User.js , Folder.js and Team.js
// 1) We first get the Team and we load the users in it
// 2) For each user, we need to add the association (User -> File and User->Folder)



// Loading the Team object
         Team
                    .findOne(1)
                    .populate('users')
                    .exec(function (err, team) {
                        if (err) {
                            return ErrorService.sendError(404, err, req, res);
                        }
                        res.json(200);
                        
                        var files = [1,2,9,22,23]; // Array containing some file ids as example
                        var folders = [1,2,32,21]; // Array containing some folder ids as example
                        
                        async.each(
                            team.users, // Foreach user in this Team
                            function loadUser(result,callback){
                                User
                                    .findOne({ id: result.id })
                                    .populate('files')
                                    .populate('folders')
                                    .exec(function(err,user){
                                        if(err){
                                          callback(err);
                                        }
                                        else{
                                        
                                            // In parallel, we need to add each file & folder (from the arrays declared above)
                                            async.parallel(
                                              [
                                                /** Add file association to each user **/
                                                function(cb){
                                                    async.each(
                                                      files,
                                                      function addAssociationFor(file,cbOne){
                                                        user.files.add(file);
                                                        cbOne();
                                                      },
                                                      function(err){
                                                        if(err){
                                                          cb(err);
                                                        }
                                                        else{
                                                          cb();
                                                        }
                                                      }
                                                    );

                                                },
                                                
                                                /** Add folder association to each user **/
                                                function(cb){
                                                  async.each(
                                                      folders,
                                                      function addAssociationFor(folder,cbTwo){
                                                        user.folders.add(folder);
                                                        cbOne();
                                                      },
                                                      function(err){
                                                        if(err){
                                                          cb(err);
                                                        }
                                                        else{
                                                          cb();
                                                        }
                                                      }
                                                    );
                                                }
                                              ],
                                              function(err){
                                                if(err){
                                                  callback(err);
                                                }
                                                else{
                                                  /** We save when all Files and Folders are added on the current user **/
                                                  user.save(function(err){
                                                    if(err){
                                                       callback(err);
                                                    }
                                                    else{
                                                       callback();
                                                    }
                                                  });
                                                }
                                              }
                                            );
                                        }
                                    });
                          
                            },
                            
                            function(err){
                              if(err){
                                return ErrorService.sendError(404,err,req,res);
                              }
                              else{
                                return sails.log('Everything has been done here');
                              }
                            }
                        );
                    })