z/migrations/db.js


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var pg = require('pg'),
  config = require('../config');

var DATABASE_URI = process.env.DATABASE_URL || ('postgres://postgres@localhost/' + config.name)

var db = module.exports = {}
db.statements = []

pg.connect(DATABASE_URI, ready);

function ready (err, client, done){
  if (err) {
    return console.error('error fetching client from pool', err);
  }
  db.client = client
  db.done = done
  db.run()
}

db.query = function (statement) {
	db.statements.push(statement)
}

db.run = function(){
	var statement = db.statements.shift()
	if (! statement) {
		return db.done()
	}
	
	db.client.query('SELECT $1::int AS number', ['1'], function(err, result) {
		console.log(result)
    db.done();
  });
}