Using populate() in .post('init') - newbie question

[MarkUK]

Hi - I have (simplified) schemas as follows:

var PersonSchema = new Schema({

    firstName: String,

    familyName: String,

});

mongoose.model('Person', PersonSchema);

var Person = mongoose.model('Person');

var ContactSchema = new Schema({

    contact : { type: Schema.ObjectId, ref: 'Person' },

    type: { type: String},

    relationship: String,

    start: Date,

    finish: Date

});

var ClientSchema = new Schema({

    _self : { type: Schema.ObjectId, ref: 'Person' },

    contactList: [ContactSchema],

});

I want to read the client name every time the record is used (but keep it in the person collection for reasons that are too complicated to go into here).  I was expecting the following to work:

ClientSchema.post("init", function(next, doc) {

    if (!this._self)

        return next();

    this.populate('_self');

    return next();

});

but I am getting

TypeError: Object { _self: 5012866355c1bf942b000011, _id: 5012866355c1bf942b000010,  contactList: 

   [ { type: 'supplier',

       contact: 5012866355c1bf942b000014,

       _id: 5012866355c1bf942b000017 } ] } has no method 'populate'

What am I doing wrong?

Mark

[Aaron Heckmann]

currently post hooks do not have next(), their behavior is identical to listening to doc.on('save', callback);

populate() is a method of Query, not of a document, though thats been lightly discussed. there's an open ticket related to that. 

here's a working mongoose v3 gist that does hack auto-prepopulation: https://gist.github.com/3190609

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@aaronheckmann