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.
Installing the module
npm install mongo-sequence
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