Mongoose saving array as empty when not - node.js

Question

First, here is the code:
Mongoose Schema
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
// Registration Form schema
var RegistrationFormSchema = new Schema;
RegistrationFormSchema.add({
studentFirst: { type: String, required: true },
studentLast: { type: String, required: true },
studentGrade: { type: String, required: true },
guardianFirst: { type: String, required: true },
guardianLast: { type: String },
guardianEmail: { type: String },
courseString: { type: String },
courseArray: { type: Array }
});
module.exports = mongoose.model('RegistrationForm', RegistrationFormSchema);
Relevant API Route
apiRouter.route('/registerNow')
.post(function(req, res) {
var newForm = new RegistrationForm();
console.log(req.body);
newForm.studentFirst = req.body.studentFirst;
newForm.studentLast = req.body.studentLast;
newForm.studentGrade = req.body.studentGrade;
newForm.guardianFirst = req.body.guardianFirst;
newForm.guardianLast = req.body.guardianLast;
newForm.guardianEmail = req.body.guardianEmail;
newForm.courseString = req.body.courseString;
newForm.save();
}
And this is inside of my controller, where I am making the request. Also making a request in Postman with the same response, so not sure if it is anything to do with how I am requesting, but want to include this to have more info for an answer.
$http.post('/api/registerNow', {
'studentFirst': vm.courseInfo.studentFirst,
'studentLast': vm.courseInfo.studentLast,
'studentGrade': vm.courseInfo.studentGrade,
'guardianFirst': vm.courseInfo.guardianFirst,
'guardianLast': vm.courseInfo.guardianLast,
'guardianEmail': vm.courseInfo.guardianEmail,
'courseString': vm.courseInfo.courseString,
'courseArray': ['asdasd', 'fasfasf', 'gasgasga']
});
Now that we have the relevant code, the question!
When I make my HTTP Post request to save to my database, it all saves, but it saves courseArray as an empty array '[]' no matter what, if it is empty or full.
I assume it's a Mongoose Schema issue.

Answer 1

In your route you're not setting the newForm.courseArray property with the data from the request. Mongoose is probably setting the default value as an empty array.
Try using the following code
apiRouter.route('/registerNow')
.post(function(req, res) {
var newForm = new RegistrationForm();
console.log(req.body);
newForm.studentFirst = req.body.studentFirst;
newForm.studentLast = req.body.studentLast;
newForm.studentGrade = req.body.studentGrade;
newForm.guardianFirst = req.body.guardianFirst;
newForm.guardianLast = req.body.guardianLast;
newForm.guardianEmail = req.body.guardianEmail;
newForm.courseString = req.body.courseString;
newForm.courseArray = req.body.courseArray; //This line is missing
newForm.save();
});