Inheritance in mongoose

Question

Hello I need to inherit my schemas in mongoose library. Are there complete plugins for that? Or how should I do that myself?

I need to inherit all pre, post, init mi

Answer 1

I know this is an oldie, but I arrived here looking for the answer to the same question and ended up doing something a little different. I don't want to use discriminators because all the documents are stored in the same collection.

ModelBase.js

var db = require('mongoose');

module.exports = function(paths) {
    var schema = new db.Schema({ 
        field1: { type: String, required: false, index: false },
        field2: { type: String, required: false, index: false } 
    }, { 
        timestamps: { 
            createdAt: 'CreatedOn', 
            updatedAt: 'ModifiedOn' 
        } 
    });

    schema.add(paths);

    return schema;
};

NewModel.js

var db = require('mongoose');
var base = require('./ModelBase');
var schema = new base({
    field3: { type: String, required: false, index: false },
    field4: { type: String, required: false, index: false }
});

db.model('NewModelItem', schema, 'NewModelItems');

All 4 fields will be in NewModelItem. Use ModelBase for other models where you want to use the same fields/options/etc. In my project I put the timestamps in there.

Schema.add is called in the Schema constructor so the model should be assembled as if all the fields were sent in the original constructor call.