pastbedti.me

As part of getting my SuppressValidations gem to load automatically when launching
script/console I took some time to configure my .irbrc file a bit and I thought I’d share it.
So here it is in all it’s glory:


require 'rubygems'
require 'irb/completion'
require 'irb/ext/save-history'

# Require and mixin the SuppressValidations gem
# (gem install polly-suppress_validations)
require "suppress_validations"
include SuppressValidations
end
end


And here’s a sample session:

$ script/console
Loading development environment (Rails 2.3.2)
test> User[1]
User Load (0.2ms) SELECT * FROM "users" WHERE ("users"."id" = 1)
=> #
test> User[1].save
User Load (0.4ms) SELECT * FROM "users" WHERE ("users"."id" = 1)
User Exists (0.2ms) SELECT "users".id FROM "users" WHERE ("users"."username" = 'foobar' AND "users".id <> 1) LIMIT 1
User Exists (0.1ms) SELECT "users".id FROM "users" WHERE ("users"."email" = 'foo@bar.baz' AND "users".id <> 1) LIMIT 1
=> true
test> def some_method
puts "Hello from some method!"
end
=> nil
test> some_method
Hello from some method!
=> nil


In my last post I showed how you can install my suppress_validations gem on a per-project basis but that’s a bit cumbersome. Wouldn’t it be nicer if it always was available in the console on every project?
I think it would, so here’s how you can accomplish just that:

Edit your ~/.irbrc (or create it if you don’t already have one):

require "rubygems"

if ENV['RAILS_ENV']
IRB.conf[:IRB_RC] = Proc.new do
require "suppress_validations"
include SuppressValidations
end
end


And thats it, you can now fire up script/console and start suppressing validations

$ script/console
Loading development environment (Rails 2.3.2)
>> post = Post.new
=> #
>> post.save
=> false
>> suppress_validations { post.save }
=> true
>> Post.last
=> #


Validations on ActiveRecord models can really get in the way while trying things out in the console sometimes so the other day when I stumbled over this railscast episode: http://railscasts.com/episodes/62-hacking-activerecord I thought, hey, with some modification that could easily be turned into a plugin.

Install it with:


$ gem install polly-suppress_validations


then add this to your config/environment.rb file:


config.gem "polly-suppress_validations", :source => "http://gems.github.com", :lib => "suppress_validations"


and then unpack it with:


$ rake gems:unpack


or just install it as a plugin:

$ script/plugin install git://github.com/polly/suppress_validations.git


Now say we have a model like this:

class Post < ActiveRecord::Base
validates_presence_of :title, :body
end


Now lets enter script/console and include the SuppressValidations module

$ script/console
Loading development environment (Rails 2.3.2)
>> include SuppressValidations
=> Object


However, trying to create a new post without the required attributes still fails as this example shows:

>> post = Post.new
=> #
>> post.save
=> false


To suppress validations just wrap the call to post.save in a suppress_validations block, like so:

>> suppress_validations { post.save }
=> true
>> Post.last
=> #