What is the proper way to use the node.js postgresql module?

Question

I am writing a node.js app on Heroku and using the pg module. I can\'t figure out the \"right\" way to get a client object for each request that I need to query the database

Answer 1

I was interested in a very simple handler for this so I made my own without making it over complicated. I'm under no illusions that it's super basic but it could help some people get started. Basically, it connects, runs queries and handles errors for you.

function runQuery(queryString, callback) {
  // connect to postgres database
  pg.connect(postgresDatabase.url,function(err,client,done) {
    // if error, stop here
    if (err) {console.error(err); done(); callback(); return;}
    // execute queryString
    client.query(queryString,function(err,result) {
      // if error, stop here
      if (err) {console.error(err+'\nQuery: '+queryString); done(); callback(); return;}
      // callback to close connection
      done();
      // callback with results
      callback(result.rows);
    });
  });
}

Then you would use by calling it this way:

runQuery("SELECT * FROM table", function(result) {
  // Whatever you need to do with 'result'
}