Ubuntu 12.10 Server Setup for Ruby on Rails, Passenger, Nginx.
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Monthly Archives: March 2013
Merging Pdf’s in Rails application
Alright, I had a lot of fun today trying to figure out how to merge pdf’s in our Rails application.
We are using pdfkit to create our pdf’s. What I needed to do was to take several pdf’s and merge them into one large pdf. Frankly I did not think it was even possible. I found several Ruby gems that were supposed to do the job but everyone I tried was just another PITA dead end.
After getting pointed in the right direction by @m3talsmith, I ended up solving my issue the old school way. So, if you have done this before with Ruby gems stick with it. If not, here we go…
I first started with an empty array for pdfs. Then I went thru a couple of processes to add all the pdfs to the pdfs array.
After that, comes the old school. Using Ghostscript (gs) we joined…
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How to Get Free Email Hosting for Your Domain
Detecting Mobile Browser via Gem
Step 1: Install the gem ‘browser’
gem install browser
Step 2: Add it to Gemfile or environment.rb
gem "browser" #=> Rails 3 config.gem "browser" #=> Rails 2
Step 3: Implement
require "browser"
browser.name # readable browser name browser.safari? browser.opera? browser.chrome? browser.mobile? browser.tablet? browser.firefox? browser.ie? browser.ie6? # this goes up to 9 browser.capable? # supports some CSS 3 browser.platform # return :mac, :windows, :linux or :other browser.mac? browser.windows? browser.linux? browser.blackberry? browser.meta # an array with several attributes browser.to_s # the meta info joined by space
Example:-
<% if browser.ie6? %> <p>You're running an older IE version. Please update it!</p> <% end %>
