Mongoose enum Validation on String Arrays?

Question

Is it possible to use enum validation on type: [String]?

Example:

var permitted = ['1','2','3'];

var exampleSchema = new Schema({
    factors: {
            type: [String],
            enum: permitted,
            required: "Please specify at least one factor."
    }
});

I would have expected that factors would only be able to contain the values in permitted.

Answer 1

This is working fine for me ([email protected])

var schema = new mongoose.Schema({
  factors: [{type: String, enum: ['1', '2', '3'], required: ...}] 
  ...
})

Note I'm using an Array of Objects

Answer 2

As of mongoose version 5.0.6 and higher, the OP issue now works!

 factors: {
            type: [String],
            enum: permitted,
            required: "Please specify at least one factor."
    }

Reference

https://github.com/Automattic/mongoose/issues/6204#issuecomment-374690551