When deploying an application with "cap deploy" by default [1] you only deploy your code but do not run migrations...
If you save a non-standard object (not a String or Fixnum, etc) like the AwesomeClass from your application in...
The Edge Rider gem will define a method collect_ids on your ActiveRecord models, scopes, integer scalars and collections, which...
ActiveRecord gives you the :include option to load records and their associations in a fixed number of queries. This is...
User.active.to_sql Rails 2 Use either the Edge Rider or fake_arel gem to get #to_sql backported...
Note: ActiveRecord::Base#becomes has a lot of quirks and inconsistent behavior. You probably want to use ActiveType.cast instead.
Bryan talked about the differences between imperative and declarative scenarios. In my opinion, both styles have benefits and should be...
When using ActionMailer, you can set an array of email addresses as recipients. If this array is generated by e.g...
Sometimes you can make your life easier by not allowing a record attribute to be changed after the record was...
ActiveRecord comes with a method touch which sets the updated_at timestamp to the current time. Unfortunately it also runs...
Specify these gem versions in your Gemfile: gem 'cucumber', '~> 1.3.0' gem 'cucumber-rails', '= 0.3.2' # max version for Rails 2
The shell variable PS1 holds your bash prompt. You might want to change it to serve your needs best. Here...
Add deprecation warnings and their solution or link to available solutions. Global access to Rake DSL methods is deprecated. Please...
Pie sometimes does not properly redraw elements upon changes. This often happens when the change comes from somewhere further up...
JavaScript Garden is a growing collection of documentation about the most quirky parts of the JavaScript programming language. It gives...
The attached RSpec matcher exist_in_database checks if a given record still exists in the database and has not...
When you need to insert many records into the same table, performance may become an issue. What you can do...
You can find ActiveRecord models by using a Range as its conditions: User.scoped(:conditions => { :id => 3..5 }) This will generate...
track down warnings and to see failing specs immediately or to get an overview of the core...
You will occasionally need to clean out your database while keeping the schema intact, e.g. when someone inserted data in...
When you click a link or a press a button on a Selenium-controlled browser, the call will return control...
When you set both a record's association and that association's foreign key attribute, Rails does not realize you...
Note: For PostgreSQL you should use advisory locks. For MySQL we still recommend the solution in this card.
When you have a Cucumber step like Then I should see "Did you see those \"quotation marks\" over there...