[IDEA] Support local and remote field selection in Schema

[scucchiero]

When marking a field as selected: false you can't access it (obviously) because is not fetched.
I ran into this use case tho and thought could be a good idea to expand the functionally of select to enable fetch but remove the key after constructing the model. Thus, enabling the following.

const MySchema = new Schema(
  {
    username: {
      type: String,
      required: true,
    },
    password: {
      type: String,

     // this is the proposal
      select: {
          virtual: true
       }
    }
  },
  {
    toJSON: {  virtuals: true },
    toObject: { virtuals: true },
  },
);

ShowSchema.virtual("hasPassword").get(function() {
  return !!this.password
 })

Thoughts?

[vkarpov15]

The issue here is that you're trying to load password, but make sure password doesn't end up getting sent to the user. That's what transforms are for.

Also, storing password on a user document is generally an antipattern: https://thecodebarbarian.com/thoughts-on-user-passwords-in-rest-apis