If you’re hosting your app on Heroku (possibly even if you aren’t) it is a good idea to create a staging environment also. Heroku has docs on this but the short version for a new app is: heroku create staging-app-name –stack cedar –remote staging(if the app is already on Heroku, just add the remote: git […]
Using the guard gem to run tests etc in your Rails app normally requires some form of file system monitoring. The monitoring will be OS dependant and rb-fsevent is the gem for OSX. This can be added to the Gemfile conditionally with: gem ‘rb-fsevent’, :require => false if RUBY_PLATFORM =~ /darwin/i Unfortunately when you next […]
It’s generally good practise to pass variables to view partials using locals rather than littering your code with @variables. This allows better reuse of the partial. To make the locals optional, provide default values if they are nil or undefined. I have seen many recommendations to do this with a test for defined? According to […]
Create the app If not installed, install PostgreSQL rails new app_name -T -d=postgresql cd app_name/ rvm –create –rvmrc 1.9.2@app_name rvm rvmrc trust Edit .Gemfile bundle install createuser -P -S -R -d app_name (no to ‘Superuser’ and ‘Create roles’, yes to ‘Create databases’) rake db:create Create procfile in app root. foreman start and check http://0.0.0.0:5000/ Push […]
The default database for Heroku is PostgreSQL and, while you could use SQLite for development and Postgres for production, there are some inconsistencies between the two. Ideally you would use the same version of the database server but currently Heroku uses version 9 for dedicated databases and 8.3 for shared databases and seem to […]
I realise that OSX does not have a registry to clog up but I have just reinstalled Lion on my Macbook Air; probably a hang up from Windows. This is a checklist for installing Homebrew >> Rails. Install XCode 4.1 (There are issues with the 4.2 compiler and certain rubies and gems) Install Homebrew https://github.com/mxcl/homebrew/wiki/installation […]
I recently had an issue in a (3.0.7) rails app where link_to some_path, :method => :post was calling the action associated with GET, this was caused by not having a link to jquery_ujs.js (I’m using jquery so don’t want rails.js) in my html output. Googling turns up a number of suggestions to add jquery_ujs.js and […]
Rails methods of locating and loading files is mostly based on convention but is built on top of Ruby’s methods. Ruby The basic way to tell a ruby to load a file is to require it, e.g. require some_file will load some_file.rb if the file has not already been loaded. load some_file.rb will load the […]
You can run irb from vim with the command !irb. Running !irb -r % should run the current file in irb then leave irb open. Unfortunately ruby 1.9.2 removed the current directory from the load path which causes this to fail. You could construct a path but it is easier to add the current directory […]
Overview HTML5 provides some great functionality but also, potentially, some headaches. HTML5 Boilerplate is a template which aims to solve the various cross-browser differences. There is a gem to use HTML5 Boilerplate in a rails app which uses Compass to build the CSS. Using Compass on Heroku requires a small workaround as Heroku limits where […]