mongoose-callback-wrapper

A wrapper for mongoose callbacks

npm install mongoose-callback-wrapper --save

Usual way of using mongoose orm

While querying for records, we might want to trim the attributes of modal based on certain context.

const ATTRIBUTES = [
    '_id',
    'password',
    'username',
    'profile_url',
    'doj',
    'emailId'
];

const PUBLIC_ATTRIBUTES = [
    'username',
    'profile_url',
    'emailId'
];

let getUserById = function(userId, callback) {
    userModel.find({
        userId: userId
    }, function(err, items) {
        if (err) {
            return callback(err);
        }
        let users = _.map(items, (user) => {
            return _.pick(user, PUBLIC_ATTRIBUTES);
        });
        return callback(null, users);
    });
};

with mongoose-callback-wrapper

let wrapper = require('mongoose-callback-wrapper');

let getUserById = function(userId, callback) {
    let wrappedCallback = wrapper.wrap(callback, PUBLIC_ATTRIBUTES);
    userModel.find({
        userId: userId
    }, wrappedCallback);
};

Tests

To run the test suite, first install the dependencies, then run npm test:

npm install
npm test

License

GPL 3.0