How to set a validity period for a subdocument in a mongoose

Question

These are my schemes:

var authUserScheme = mongoose.Schema({
    token: String,
    ip: String,
    valid: {type: Date, default: Date.now(), expires: '1m' },   
}, {_id: false});

var usersSchema = mongoose.Schema({
// OTHER THINGS
     auth : [ authUserScheme ],
// other things
});

When I set the path to 'auth', mongodb deletes the entire document, but I want to delete only the auth line when it expires ... Maybe?

Sorry for my English, I speak Spanish.

Answer 1

You cannot use the TTL index to delete parts of a document after expiration.

However, it looks like yours authUserSchemeis more of a session concept than an embedded document.

A better approach would be to use a link from authUserSchemeto the appropriate user, for example:

var authUserSchema = mongoose.Schema({
    token: String,
    ip: String,
    valid: {type: Date, default: Date.now(), expires: '1m' },
    user: { type: Number, ref: 'User' }
});

var userSchema = mongoose.Schema({
    name: String,
    // Other fields
})

var AuthUser  = mongoose.model('AuthUser', authUserSchema);
var User = mongoose.model('User', userSchema);