Railskid

Yesterday I decided to move my practice application from SQLite to some other database due to some issues with speed and geofencing. I successfully shifted to PostgreSQL, but when I launched `rspec spec` I saw this terrible picture:  Whoops, looks like my database cleans up before it is required. So I dug in deeper and found out that this issue happens due to a race condition on pg adapter using shared connection hack. So according to [this comment](https://github.com/bmabey/database_cleaner/issues/117#issuecomment-8024824) I modified my `database_cleaner.rb` this way: RSpec.configure do |config| config.before do DatabaseCleaner.strategy = if example.metadata[:type] == :request :truncation else :transaction end DatabaseCleaner.start end config.after do DatabaseCleaner.clean end end Now everything works as charm and all my tests are up and running.

I didn't ever think that ri may be much more useful than searching Google for documentation.

And now a little about testing.

Let's imagine that we have a User model. We also have a Drive model which belongs to User. Now if we use `@drive = user.drives.build(...)` expression we can face with an error: NameError: uninitialized constant User::Drife The reason is that Inflector class (the one that manages pluralizations and singlularizations in our Ruby on Rails project) may mistake like a person. So we need to tell him the right form: # config/environment.rb ... ActiveSupport::Inflector.inflections do |inflect| inflect.irregular 'drive', 'drives' end

Wonderful article

Apple included PostgreSQL server into its Mac OS 10.7 Lion. At this point it became out-of-date, so the best way to have the newest PostgreSQL is to install it via Homebrew or MacPorts. And here comes the pain: the newly installed server conflicts with the one that comes with operating system and shows this error message: createuser: could not connect to database postgres: could not connect to server: Permission denied Is the server running locally and accepting connections on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432"? So here is [the link](http://tammersaleh.com/posts/installing-postgresql-for-rails-3-1-on-lion "Installing PostgreSQL for Rails 3.1 on Lion") that helped me to solve this problem. If it doesn't help, you can try [this script](http://nextmarvel.net/blog/2011/09/brew-install-postgresql-on-os-x-lion/) and don't forget to reinstall `pg` gem after you run it: gem uninstall pg gem install pg

Follow the link for the change log. These guys make an incredible job.

RSpec is planning to have a new expectation syntax. In 2.11 release (which comes out soon) it has a new method expect, so, for example, instead of writing should be_valid or should_not be_valid you say expect foo to be_valid. Also if you decide to write a lambda expression you can substitute it by writing expect …. This way RSpec becomes even more friendly to natural language we speak and more unified.

You may face a problem some time when you need to have a page that has several entry points and after some action is done you need to bounce back to the page you came from, and simple_workflow gem is a nice tool for that task. It gives you a new link_to method called "detour_to", and a new redirect_to method named "back_or_redirect_to". Using these features you can create alternate-dispatched page flows in your Rails application.