ruby-on-rails

How can I disable logging of asset pipeline (sprockets) messages in Ruby on Rails 3.1?

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Place the following code in config/initializers/quiet_assets.rb if Rails.env.development? Rails.application.assets.try(:logger=, Logger.new(‘/dev/null’)) Rails::Rack::Logger.class_eval do def call_with_quiet_assets(env) previous_level = Rails.logger.level Rails.logger.level = Logger::ERROR if env[‘PATH_INFO’] =~ %r{^/assets/} call_without_quiet_assets(env) ensure Rails.logger.level = previous_level end alias_method_chain :call, :quiet_assets end end Updated: It now works for Ruby on Rails 3.2 too (previous attempt fixes before_dispatch, and now we’re going for the … Read more

Rails migration for change column

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Use #change_column. change_column(:table_name, :column_name, :date) # a few more examples: change_column(:suppliers, :name, :string, limit: 80) change_column(:accounts, :description, :text) NOTE: the same result can be achieved even outside of db migrations, this might be handy for testing/debugging but this method needs to be used very cautiously: ActiveRecord::Base.connection.change_column(:table_name, :column_name, :date)

How to convert a ruby hash object to JSON?

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One of the numerous niceties of Ruby is the possibility to extend existing classes with your own methods. That’s called “class reopening” or monkey-patching (the meaning of the latter can vary, though). So, take a look here: car = {:make => “bmw”, :year => “2003”} # => {:make=>”bmw”, :year=>”2003″} car.to_json # NoMethodError: undefined method `to_json’ … Read more

Rails where condition using NOT NIL

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Rails 4+ ActiveRecord 4.0 and above adds where.not so you can do this: Foo.includes(:bar).where.not(‘bars.id’ => nil) Foo.includes(:bar).where.not(bars: { id: nil }) When working with scopes between tables, I prefer to leverage merge so that I can use existing scopes more easily. Foo.includes(:bar).merge(Bar.where.not(id: nil)) Also, since includes does not always choose a join strategy, you should … Read more

Rails I18n validation deprecation warning

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Important: Make sure your app is not using I18n 0.6.8, it has a bug that prevents the configuration to be set correctly. Short answer In order to silence the warning edit the application.rb file and include the following line inside the Rails::Application body config.i18n.enforce_available_locales = true The possible values are: false: if you want to … Read more

No route matches “/users/sign_out” devise rails 3

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I think the route for signing out is a DELETE method. This means that your sign out link needs to look like this: <%= link_to “Sign out”, destroy_user_session_path, :method => :delete %> Yours doesn’t include the :method => :delete part. Also, please note that for this to work you must also include <%= javascript_include_tag :defaults … Read more

Rails update_attributes without save?

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I believe what you are looking for is assign_attributes. It’s basically the same as update_attributes but it doesn’t save the record: class User < ActiveRecord::Base attr_accessible :name attr_accessible :name, :is_admin, :as => :admin end user = User.new user.assign_attributes({ :name => ‘Josh’, :is_admin => true }) # Raises an ActiveModel::MassAssignmentSecurity::Error user.assign_attributes({ :name => ‘Bob’}) user.name # … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)