Compound Unique indexes

Feature Request:

A cool to have compound unique indexes in a schema for instance.

var Schema = new Schema({
    created: {
        type: Date,
        default: Date.now
    },
    product_slug : {
        type: String,
        index: true
    },
    store_slug: {
        type: String
        index: true
    }
});


Schema.unique({store_slug : {product_slug : 1}});

So product_slug must be unique among all objects with the same store_slug.

This definitely could be achieved with a mongoose plugin however I think this could give mongoose a lot of power right out of the box and could be included.

[vkarpov15]

Schema.index({ store_slug: 1, product_slug: 1 }, { unique: true }); https://docs.mongodb.org/manual/tutorial/create-a-unique-index/#unique-compound-index

[florianwalther-private]

@vkarpov15 Thank you for the clarifiation!