test1  [

   [0] { test: Array, comments: Array },
   [1] { test: Array, comments: Array }

]

var UserSchema = new Schema({

    test1: { type: Array, required: false },
    test2: { type: Array, required: false },
    test3: { type: Array, required: false }

});

<form name="edit.test1" ng-submit="ctrl.updateTest1(newComment1, newComment2, ctrl.artikel)">

    <div class="form-group">
        <label>Kommentarer:</label>
        <input class="form-control" type="text" name="test1" placeholder="Comment on first value" ng-model="newComment1" autocomplete="off">
        <br>
        <input class="form-control" type="text" name="test1" placeholder="Comment on second value" ng-model="newComment2" autocomplete="off">
    </div>

        <button type="submit" class="btn btn-primary">Submit</button>

  </form>

app.updateTest1 = function(newComment1, newComment2, index) {
          app.errorMsg = false; // Clear any error message
          app.disabled = true; // Lock form while processing
          // Check if username submitted is valid

              var userObject = {}; // Create the user object to pass to function
              userObject._id = app.currentUser; // Pass current user _id in order to edit

              userObject.test1 = [$scope.newComment1, $scope.newComment2, index]; // Set the new username provided

              // Runs function to update the user's username
              User.editUser(userObject).then(function(data) {

                // Behöver jag lägga till något här??

              });
            };

userFactory.editUser = function(id) {
        return $http.put('/api/edit', id);
    };

router.post('/users', function(req, res) {
        var user = new User(); // Create new User object
        user.username = req.body.username; // Save username from request to User object
        user.password = req.body.password; // Save password from request to User object
        user.email = req.body.email; // Save email from request to User object
        user.name = req.body.name; // Save name from request to User object
        user.temporarytoken = jwt.sign({ username: user.username, email: user.email }, secret, { expiresIn: '24h' }); // Create a token for activating account through e-mail

        // Check if request is valid and not empty or null
        if (req.body.username === null || req.body.username === '' || req.body.password === null || req.body.password === '' || req.body.email === null || req.body.email === '' || req.body.name === null || req.body.name === '') {
            res.json({ success: false, message: 'Ensure username, email, and password were provided' });
        } else {
            // Save new user to database
            user.save(function(err) {
                if (err) {
                    // Check if any validation errors exists (from user model)
                    if (err.errors !== null) {
                        if (err.errors.name) {
                            res.json({ success: false, message: err.errors.name.message }); // Display error in validation (name)
                        } else if (err.errors.email) {
                            res.json({ success: false, message: err.errors.email.message }); // Display error in validation (email)
                        } else if (err.errors.username) {
                            res.json({ success: false, message: err.errors.username.message }); // Display error in validation (username)
                        } else if (err.errors.password) {
                            res.json({ success: false, message: err.errors.password.message }); // Display error in validation (password)
                        } else {
                            res.json({ success: false, message: err }); // Display any other errors with validation
                        }
                    } else if (err) {
                        // Check if duplication error exists
                        if (err.code == 11000) {
                            if (err.errmsg[61] == "u") {
                                res.json({ success: false, message: 'That username is already taken' }); // Display error if username already taken
                            } else if (err.errmsg[61] == "e") {
                                res.json({ success: false, message: 'That e-mail is already taken' }); // Display error if e-mail already taken
                            }
                        } else {
                            res.json({ success: false, message: err }); // Display any other error
                        }
                    }
                } else {
                    // Create e-mail object to send to user
                    var email = {
                        from: 'MEAN Stack Staff, cruiserweights@zoho.com',
                        to: [user.email, 'gugui3z24@gmail.com'],
                        subject: 'Your Activation Link',
                        text: 'Hello ' + user.name + ', thank you for registering at localhost.com. Please click on the following link to complete your activation: http://www.herokutestapp3z24.com/activate/' + user.temporarytoken,
                        html: 'Hello<strong> ' + user.name + '</strong>,<br><br>Thank you for registering at localhost.com. Please click on the link below to complete your activation:<br><br><a href="http://www.herokutestapp3z24.com/activate/' + user.temporarytoken + '">http://www.herokutestapp3z24.com/activate/</a>'
                    };
                    // Function to send e-mail to the user
                    client.sendMail(email, function(err, info) {
                        if (err) {
                            console.log(err); // If error with sending e-mail, log to console/terminal
                        } else {
                            console.log(info); // Log success message to console if sent
                            console.log(user.email); // Display e-mail that it was sent to
                        }
                    });
                    res.json({ success: true, message: 'Account registered! Please check your e-mail for activation link.' }); // Send success message back to controller/request
                }
            });
        }
    });

router.put('/edit', function(req, res) {
            var editUser = req.body._id; // Assign _id from user to be editted to a variable
            if (req.body.name) var newName = req.body.name; // Check if a change to name was requested
            if (req.body.username) var newUsername = req.body.username; // Check if a change to username was requested
            if (req.body.email) var newEmail = req.body.email; // Check if a change to e-mail was requested
            if (req.body.permission) var newPermission = req.body.permission; // Check if a change to permission was requested

            if (req.body.test1) {
              var newTest1 = req.body.test1;
            }
            if (req.body.test2) {
              var newTest2 = req.body.test2;
            }
            if (req.body.test3) {
              var newTest3 = req.body.test3;
            }
            if (req.body.test4) {
              var newTest4 = req.body.test4;
            }
            if (req.body.test5) {
              var newTest5 = req.body.test5;
            }


            // Look for logged in user in database to check if have appropriate access
            User.findOne({ username: req.decoded.username }, function(err, mainUser) {
                if (err) {
                    // Create an e-mail object that contains the error. Set to automatically send it to myself for troubleshooting.
                    var email = {
                        from: 'MEAN Stack Staff, cruiserweights@zoho.com',
                        to: 'gugui3z24@gmail.com',
                        subject: 'Error Logged',
                        text: 'The following error has been reported in the MEAN Stack Application: ' + err,
                        html: 'The following error has been reported in the MEAN Stack Application:<br><br>' + err
                    };
                    // Function to send e-mail to myself
                    client.sendMail(email, function(err, info) {
                        if (err) {
                            console.log(err); // If error with sending e-mail, log to console/terminal
                        } else {
                            console.log(info); // Log success message to console if sent
                            console.log(user.email); // Display e-mail that it was sent to
                        }
                    });
                    res.json({ success: false, message: 'Something went wrong. This error has been logged and will be addressed by our staff. We apologize for this inconvenience!' });
                } else {
                    // Check if logged in user is found in database
                    if (!mainUser) {
                        res.json({ success: false, message: "no user found" }); // Return error
                    } else {
                        // Check if a change to name was requested

-----> HERE               if (newTest1) {
                          // Check if person making changes has appropriate access
                          if (mainUser.permission === 'admin') {
                              // Look for user in database
                              User.findOne({ _id: editUser }, function(err, user) {
                                  if (err) {
                                      res.json({ success: false, message: 'Something went wrong. This error has been logged and will be addressed by our staff. We apologize for this inconvenience!' });
                                  } else {
                                      // Check if user is in database
                                      if (!user) {
                                          res.json({ success: false, message: 'No user found' }); // Return error
                                      } else {

                                            if (Array.isArray(newTest1)) {
                ------> this does not work   user.test1[0].comments.push(newTest1);
                                            //user.test1.splice(index, 0, newTest1)
                                          } else {
               ---> this works              var testet1 = { test: newTest1.split(" "), comments: Array };
                                            user.test1.push(testet1); // Assign new name to user in database
                                          }
                                          // Save changes
                                              user.save(function(err) {
                                                  if (err) {
                                                      console.log(err); // Log any errors to the console
                                                  } else {
                                                      res.json({ success: true, message: 'Name has been updated!' }); // Return success message
                                                  }
                                              });
                                      }
                                  }
                              });