mongo-sequence

Simple sequence generator for node+mongodb
--


Description

Implements the code described in http://docs.mongodb.org/manual/tutorial/create-an-auto-incrementing-field/
as a small nodejs module.

Here is how to use it:
``
var mongoSequence = require('mongo-sequence');
var empseq = mongoSequence(db,'employees');

empseq.getNext(function(err,sequence) {
if (!err) {
db.employees.insert(
{
_id: sequence
name: "Sarah C."
}
)
}
}
`
I also use it with fiber promises and it looks nicer:
`
var _ = require('glutils');
//... within a fiber thread at this point
if (!err) {
db.employees.insert(
{
_id: _.p(empseq.getNext(_.p())),
name: "Sarah C."
}
)
}

`
A third parameter can also be passed as a hash with options. Sole option supported is 'coll' - if provided it refers to the collection name that should be used in the mongodb to holde the sequences.




Installation

Installing the module
`
npm install mongo-sequence
``