gdusbabek

var async = require('async');

function doSimpleConnect(callback) {
  
  var Connection = require('cassandra-client').Connection;
  
  // these are the connection parameters you need to connecto to Cassandra.
  var connectionOptions = {
    host: '127.0.0.1',
    port: 19170,

jcasimir

Transactions

As your business logic gets complex you may need to implement transactions. The classic example is a bank funds transfer from account A to account B. If the withdrawal from account A fails then the deposit to account B should either never take place or be rolled back.

Basics

All the complexity is handled by ActiveRecord::Transactions. Any model class or instance has a method named .transaction. When called and passed a block, that block will be executed inside a database transaction. If there's an exception raised, the transaction will automatically be rolled back.

Example

davatron5000

<?php
/*
Plugin Name: Videos
Plugin URI: 
Author: Dave Rupert
Author URI: http://www.daverupert.com
Description: A custom post type that adds videos and custom taxonomies.
Version: 1.0
*/

zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')