Mongoose: Error is thrown when base model's schema specifies options that are not reflected in discriminator model's schema

[flore2003]

When using the new discriminator models, mongoose throws an error, if the base model's schema specifies schema options that are not reflected in the discriminator model's schema.

Here is a simple code snippet that shows the issue:

var BaseSchema = new mongoose.Schema({
    "name": String
}, {
    "versionKey": false
});

var DiscriminatorSchema = new mongoose.Schema({
    "something": String
});

var Base = mongoose.model("Base", BaseSchema);
var Discriminator = Base.discriminator("Discriminator", DiscriminatorSchema);

The following error is thrown:

Error: Discriminator options are not customizable (except toJSON & toObject)

I understand that you can't set schema options on a schema used in a discriminator model, but it should not be an issue the other way around. I would expect the schema options of the base schema to be "inherited" by the discriminator schema.

[ashaffer]

+1

[zabojad]

Same thing here, and agree with @flore2003...

[ztzven]

+1

[moleike]

I run into this too, +1

[Tate-ad]

+1

[activatedgeek]

It looks like such a behavior is only for a subset of options. Not all.

[0xc00010ff]

var options = { discriminatorKey: 'type', timestamps: true }; gives me this error. Luckily I can just hardcode the timestamps, but it would be nice if this was supported.

[vkarpov15]

Actually this looks like a dup of #3414, which means it should be fixed when 4.5 lands.

[ksloan]

Was this never fixed? Seeing this in 4.10.6.

[vkarpov15]

@ksloan this particular issue is fixed. If you're experiencing a similar issue, please open up a new issue with a repro script.

[cp4r3z]

fwiw, I see the same issue in 4.11.14 when my base schema options contains

{ "versionKey": false }

Removing it makes the error go away (because now both schemas default to "__v"

Perhaps my scenario is slightly different, but I don't understand how the original issue was fixed.