Update document with error: Cast to string failed for value undefined

Question

I have a simple document with name (require), description (optional). In my model, I update a document with a valid id and I pass description with value undefined because I

Answer 1

If someone does not want to drop down to native driver, refer to this answer https://stackoverflow.com/a/54320056/5947136

The issue here is using type as a key in Schema.

var schema = new Schema({
 name: {
    required: true,
    set: mongooser.trimSetter,
    trim: true,
    type: String, // <-- This is causing the issue
    unique: true
  },
  description: {
    set: mongooser.trimSetter,
    trim: true,
    type: String // <-- This is causing the issue
  }
});

Refer the above answer for a solution without the need for native driver.