+CourseSchema.virtual( 'sanitized' ).get(function() {
+ var course = {
+ _id: this._id,
+ name: this.name,
+ number: this.number || 'None',
+ description: this.description || 'None',
+ subject: this.subject || 'None',
+ department: this.department || 'None'
+ }
+
+ return course;
+});
+