harssh-sparkway

#Don’t Repeat Yourself (DRY) in Ruby on Rails

#DRY (Don’t Repeat Yourself)  is a principle of Software Development to reducing repetition of information or codes. We can #apply DRY quite broadly to database schema, test plan, system, even documentation. And in this post, we will take example of DRY #in Ruby on Rails development.

#In particular case, if you find some methods whose definitions are more or less similar, only different by the method name, it #may use meta programming to simplify the things to make your model more clean and DRY. Consider this simple example where we #have an article with three states.

#Before


class Article < ActiveRecord::Base

harssh-sparkway

#Rails Logger Tricks

#Here are a few quick tricks for using the Rails logger.

#Save disk space by rotating logs in the config/environments/test.rb and config/environments/development.rb

config.logger = Logger.new(Rails.root.join("log",Rails.env + ".log"),3,5*1024*1024)
#which will rotate the log files every 5 megabytes and leave only the three most recent log files. This will limit the total spaces #used by the logs at 15 megabytes.

#To log to STDOUT while using the console use this trick:

harssh-sparkway

12 SublimeERb
    TextMate Style ERB Block for Sublime Text
https://github.com/eddorre/SublimeERB

11. A Sublime Text 2/3 plugin to see git diff in gutter 
http://www.jisaacks.com/gitgutter

10. Package control

harssh-sparkway

exporting your repository

Previously there was a tip that covered sharing changes but that included all of your repository’s history.
What if you just want to export a certain commit’s changes? Or just one folder? What if you wanted to make 
an archive of the repository for backup? 

Fear not, for Git can do all that and more. Thanks to Stack Overflow for providing with some helpful hints to add into this post.
If your need is to just make a quick backup of your repository, doing a git archive will help. So if you wanted to get 
zip file packed with your repository’s files:

harssh-sparkway

http://blog.firmhouse.com/fancy-money-entry-for-your-rails-app-with-autonumeric-and-moneyrails

Creating fancy money entry for your Rails app

This week I was working on a client project where we wanted to implement a nice way of entering an amount of money. We wanted to replace a standard text input field with something like this:

Money entry sample

In the resulting implementation, when the user types the amount in the text box it automatically splits thousands and the decimal point.

harssh-sparkway

#Instructions

#Add the gems to your Gemfile:

gem 'fog'
gem 'carrierwave'
gem 'rmagick' # optional, for image resizing support

# Add the file './config/initializers/carrierwave.rb' for your CarrierWave configuration:

harssh-sparkway

gzip  on;
    gzip_http_version 1.1;
    gzip_disable "msie6";
    gzip_vary on;
    gzip_min_length 1100;
    gzip_buffers 64 8k;
    gzip_comp_level 3;
    gzip_proxied any;
    gzip_types text/plain text/css application/x-javascript text/xml application/xml;

harssh-sparkway

<CORSConfiguration>
 <CORSRule>
   <AllowedOrigin>http://www.example.com</AllowedOrigin>

   <AllowedMethod>PUT</AllowedMethod>
   <AllowedMethod>POST</AllowedMethod>
   <AllowedMethod>DELETE</AllowedMethod>

   <AllowedHeader>*</AllowedHeader>
 </CORSRule>

harssh-sparkway

Asynchronous and deferred JavaScript execution explained

The HTML <script> element allows you to define when the JavaScript code in your page should start executing. The “async” and “defer” attributes were added to WebKit early September. Firefox has been supporting them quite a while already. Does your browser support the attributes?



Normal execution <script>
-------------------------------
This is the default behavior of the <script> element. Parsing of the HTML code pauses while the script is executing. For slow servers and heavy scripts this means that displaying the webpage will be delayed.

harssh-sparkway

The nginx: unrecognized service error means the startup scripts need to be created.
Fortunately the startup scripts have already been written.

We can fetch them with wget and set them up following these steps:

# Download nginx startup script
wget -O init-deb.sh http://library.linode.com/assets/660-init-deb.sh

# Move the script to the init.d directory & make executable
sudo mv init-deb.sh /etc/init.d/nginx