Archive for category rails

Enumerable grep method in Ruby

There is some methods that are not very known among ruby developpers. One of them is Enumerable#grep method. I would like to share one of the use case I have to face with, and how I implement grep. Purpose, I have a Hash representing a simple network I’d like to select all the people related [...]

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Email validation in Ruby On Rails 3 or Active model without regexp

In Rails 3.0, you can use custom validator in your active_record model. So I wanted to manage email validations without regexp matching like others do. I find a new way to make this work thanks to ruby mail gem, a dependency of Rails 3.0 class User < ActiveRecord::Base validates :email, :presence => true, :email => [...]

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How to translate your column fields and values with gettext in ruby on rails

I am proud to have published my first useful ruby gem. It is called gettext_column_mapping, you can check out the code in my github repository. I already released it as a gem through gemcutter/rubygems It is based upon Masao Mutoh (gettext and gettext_active_record) and Michael Grosser (fast_gettext and gettext_i18n_rails) works. Thanks to them History In [...]

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Bundler default Gemfile and custom Gemfile, example of wirble

Hi all, A simple trick I want to share with you if you are using Bundler (or rails 3) It matters if you want to install wirble gem in your workstation but not in your server Sometimes, you want to include some gem that are not mandatory for your application to run but you want [...]

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Mysql 4.x and Rails : RELEASE SAVEPOINT issue

Today with a project using mysql 4.1.22 that I have to implement some tests, I ran this error with rails 2.3.5 and I think for 2.3.x branch. Mysql::Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘RELEASE SAVEPOINT [...]

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gettext 2.0.4 and rails 2.3.4

Rails 2.3.4 broke gettext_activerecord 2.0.4 Well I did not test other gems of the mutoh gettext set of libraries but here is the gulty code that breaks rails. Since Activerecord::Errors changed its implementation a bit, an error like this is raised : NoMethodError: undefined method `gsub’ for #<ActiveRecord::Error:0×00000002919738> from /home/hallelujah/Jail/lib/ruby/gems/1.9.1/gems/gettext_activerecord-2.0.4/lib/gettext_activerecord/validations.rb:165:in `localize_error_message’ from /home/hallelujah/Jail/lib/ruby/gems/1.9.1/gems/gettext_activerecord-2.0.4/lib/gettext_activerecord/validations.rb:112:in `block (2 [...]

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