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One of the most important parts of a development process is an application deployment. There are many tools developed to make this process easy and painless: from the simple inploy to a complex all-in-one chef-based solutions. My tool of choice is Capistrano, simple and incredibly flexible piece of software. Today I’m going to talk about some advanced Capistrano usage scenarios. 1. Graceful Passen

Posted by Dmytro Shteflyuk on May 13, 2009 under Mac OS X In Scribd we have tons of analytics data generated daily that should be somehow processed. Currently we use MySQL to store all this stuff, but that is not the best option for logging lots of data. So we’ve decided to try some more specialized tools, which could help us to store and process our data. The most interesting thing which could si

I use RSpec in all my projects. It’s really hard to overemphasize how helpful it is and how much easier becomes your life if you have good specs coverage. But its outstanding flexibility enables many ways to make your specs awful: horribly slow, over-bloated, even non-readable sometimes. I do not want to teach you BDD and RSpec here, but instead I will give you some ideas how to improve your specs

Posted by Dmytro Shteflyuk on March 31, 2007 CodeColorer is the plugin which allows you to insert code snippets into the post with nice syntax highlighting. I want to show you example first: class Feed < ActiveRecord::Base SOURCE_TYPES = { category: 0, tag:      1, user:     2, } define_enum :source_type, raise_on_invalid: true #------------------------------------------------- # Accessors def vid

Today we will talk about code organization in Ruby on Rails projects. As everybody knows, Ruby on Rails is a conventional framework, which means you should follow framework architects’ decisions (put your controllers inside app/controllers, move all your logic into models, etc.) But there are many open questions around those conventions. In this write-up I will try to summarize my personal experie

Posted by Dmytro Shteflyuk on April 5, 2007 The Sphinx Client API is used to communicate with searchd daemon and get search results from Sphinx. It is used in large applications with a lot of data to provide fast, reliable search engine. Ruby API is a port of PHP API, which could be found inside your Sphinx distributive. Below you could find information on how to install and use it. Warning: If yo

Next thing is to fix an input problem (from iTerm FAQ). If you can’t input Chinese/Japanese/Umlauts/Accents, put this into your ~/.bash_profile: Ok, everything works now and all I want is to migrate my color scheme options from Terminal. I love dark color scheme with pastel ANSI colors theme: There is a great feature of iTerm called bookmarks. You can create display, keyboard, and terminal profile

Posted by Dmytro Shteflyuk on May 1, 2009 under Mac OS X How many ssh session do you open usually? In Scribd we have about 50 machines, and most of the time I have to connect to several of them to do my work. But there is a big problem — it’s hard to distinguish among different tabs in iTerm. Of course, you can see the host where you connected to in the tab title, but the title is really small, lo

Posted by Dmytro Shteflyuk on March 30, 2007 Plugin allows to select category which will be used to generate permalink on post edit page. Use custom permalink option %scategory% on Options/Permalinks options page. Installation Download and unpack plugin files to the wp-content/plugins/scategory-permalink directory. Enable sCategory Permalink plugin on your Plugins page in Site Admin. Open the Opti

Posted by Dmytro Shteflyuk on April 19, 2007 under Ruby & Rails Unfortunately, RSpec does not provide helpers for testing mailers like TestUnit. But it is easy to add them to your application, and here you could find code snippet for testing mailers. For the beginning we would define helper for reading fixtures and put them into the spec/mailer_spec_helper.rb file: require File.dirname(__FILE__) +

Posted by Dmytro Shteflyuk on October 11, 2006 under Ruby & Rails In my current project I need to encode media files from any format to several predefined. Furthermore I need to track progress and show it for the customer. I don’t want to describe wich media formats I need and what troubles with converting (maybe it will be my future posts, if anybody interested), instead I will describe common id

Posted by Dmytro Shteflyuk on March 8, 2006 under PHP Zend Framework’s View class has very bad capability for extending. It contains template variables but does not allow to access them, it has array with different pathes (templates, filters), but does not allow to add another type or access them. Therefor only way to use Smarty with Zend Framework is to abandon Zend_View and manipulate Smarty obj