venkatch789

/* 
  ##Device = Desktops
  ##Screen = 1281px to higher resolution desktops
*/

@media (min-width: 1281px) {
  
  //CSS
  

venkatch789

#!/usr/bin/env ruby

# Put this file in the root of your Rails project,
# then run it to output the SQL needed to change all
# your tables and columns to the same character set 
# and collation.
#
# > ruby character_set_and_collation.rb

DATABASE      = ''

venkatch789

##Create a migration
### rails g migration make_unicode_friendly

class MakeUnicodeFriendly < ActiveRecord::Migration
  def change
    alter_database_and_tables_charsets "utf8", "utf8_general_ci"
  end

  private
  def alter_database_and_tables_charsets charset = default_charset, collation = default_collation

venkatch789

* Create a clean ruby on rails application using twitter bootstrap.

* Create User model with fields first, last, email.

* Install and setup devise gem to use the User model for auth (email used as a user name).

* Generate devise views via rake command

* On the register new user view add a new text field called Secret Code.

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namespace :db do
  desc "Update and create SQL views"
  task :views => :environment do
    Dir["#{Rails.root}/db/sql_views/*.sql"].each do |file_name|
      STDERR.puts "Applying the SQL view at #{file_name}"
      source_file = File.new(file_name, 'r')

      if source_file and (sql_content = source_file.read)
        ActiveRecord::Base.transaction do
          # Each statement ends with a semicolon followed by a newline.

venkatch789

# This is a skeleton for testing models including examples of validations, callbacks,
# scopes, instance & class methods, associations, and more.
# Pick and choose what you want, as all models don't NEED to be tested at this depth.
#
# I'm always eager to hear new tips & suggestions as I'm still new to testing,
# so if you have any, please share!
#
# @kyletcarlson
#
# This skeleton also assumes you're using the following gems: 

venkatch789

Originally published in June 2008

When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.

To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.

What to expect

Candidates will typically give you a range of responses based on their experience and personality. So it's up to you to decide the correctness of their answer.

venkatch789

What are the differences between procs and lambdas?

Before getting into the differences, they are very similar and both are Proc objects.

proc = Proc.new { puts "Hello world" }
lam = lambda { puts "Hello World" }

proc.class # returns 'Proc'
lam.class  # returns 'Proc'

venkatch789

My issues with Modules

In researching topics for RailsCasts I often read code in Rails and other gems. This is a great exercise to do. Not only will you pick up some coding tips, but it can help you better understand what makes code readable.

A common practice to organize code in gems is to divide it into modules. When this is done extensively I find it becomes very difficult to read. Before I explain further, a quick detour on instance_eval.

You can find instance_eval used in many DSLs: from routes to state machines. Here's an example from Thinking Sphinx.

class Article < ActiveRecord::Base

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Design patterns (in Ruby)

Design patterns are just tools that help us constructing a software.

Template Method pattern

In the Template Method pattern, we create a skeletal class and it is basis for various subclasses or concrete classes. Within in the skeletal class, there are abstract methods, which in turn, will be overridden by the methods of subclasses.

Let's take an example of simple payment system,