similar to: Re: undefined method `count' for Array...

Ryan Bigg wrote: > Try User.count or User.all.size. Unless I missed it it seems that no one actually mentioned the real difference between these two calls. While they will produce the same end result the process of getting to that result is very different: n = User.all.size => 123 SELECT * FROM "users" n = User.count => 123 SELECT count(*) AS count_all FROM

I am very new to ROR. (Ruby 1.8.7, rails 2.1.1, rack 0.8.7, mysql 5.1.41) I has my_app/lib/migration_helpers.rb file: module MigrationHelpers def self.foreign_key(from_table, from_column, to_table) constraint_name = "fk_#{from_table}_#{to_table}" execute %{alter table #{from_table} add constraint #{constraint_name} foreign key (#{from_column})

Hello everyone! I think a little background is necessary. I''ve been a web-developer and linux user for a little over 4 years now, primarily working with PHP and MySQL. I''ve tried several other frameworks like Django and CodeIgniter and several other languages, including python, perl, ASP/.NET, javascript and javascript frameworks, also worked with Oracle and PostgreSQL and many

I''m trying to run a rails app developed by my firm on my Ubuntu machine. I''m using RVM with what I think are all the appropriate gems installed. The application works fine on co-workers OSX machines. When running db:migrate I get the following error: $ rake db:migrate --trace ... rake aborted! An error has occurred, all later migrations canceled: undefined method

I started getting this error message when I attempt to do some rake tasks: $ rails destroy scaffold genotypes /usr/share/rails-ruby1.8/railties/lib/rails_generator/options.rb:32:in `default_options'': undefined method `write_inheritable_attribute'' for Rails::Generator::Base:Class (NoMethodError) from /usr/share/rails-ruby1.8/railties/lib/rails_generator/base.rb:90:in

Hi all, I am trying to upgrade my rails 2 app to 3 and am getting this error when trying to login: NoMethodError in AuthenticateController#authenticate undefined method `to_sym'' for nil:NilClass The stack trace is: activerecord (3.2.2) lib/active_record/validations/uniqueness.rb:26:in `validate_each'' activemodel (3.2.2) lib/active_model/validator.rb:153:in

Any idea what might be wrong? ActionView::Template::Error (undefined method `+@'' for #<ActionView::OutputBuffer:0x00000002e51580>): -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to

Hi! I know that there are other topics about this issue, I read them and I''m always blocked. Here is the error message: undefined method `model_name'' for NilClass:Class Extracted source (around line #30): 27: 28: <h2>Add Translation</h2> 29: 30: <%= form_for @new_trad do |f| %> 31: Locale: <%= f.text_field :locale %> 32: Key : <%=

Hi All, I have an rails 2.3.11 app which I''m trying to run locally. When runnign script/server i get this error which i googled but couldn''t find the answer anywhere: Gem::SourceIndex#initialize called from /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/vendor_gem_source_index.rb:100. Invalid gemspec in

Hey all, I was converting a haml file to erb and when finished, I ran the app and got this error message: NoMethodError in Students#student_fail Showing app/views/students/student_fail.erb where line #40 raised: undefined method `join'' for #<String:0x105a5e0c8> Extracted source (around line #40): 37: 38: <% fields << render(:partial =>

I am doing a web shop assignment and have got a problem with my action mailer. I get an error undefined local variable or method ''game'' I have the following in my mailer: def game_interest(user, game) @user = user @game = Game mail :to => user.email, :subject => "Game Interest" end and the following in my controller: def email @game =

Hi, We are running RE: ruby 1.8.7 (2009-06-12 patchlevel 174) [sparc-solaris2.10], MBARI 0x8770, Ruby Enterprise Edition 2009.10 I tried a simple web app with a controller rendering a text and is working in my PC but on the server I get: Error message: undefined method `alias_method_chain'' for I18n::Backend::Simple:Class Exception class: NoMethodError Application root:

require ''prawn'' require ''prawn/core'' require ''prawn/layout'' Prawn::Document.new do |pdf| subtable = pdf.make_table([[ "foo", "bar" ], [ "baz", "bax" ]], :column_widths => [ 50, 50 ]) { column(0).background_color = "808080" cells.borders = []

Hi , I am writing a rake task to consume twitter stream API. The task contains the following code: consumer = OAuth::Consumer.new(CONSUMER_KEY, CONSUMER_SECRET, :site => ''http://twitter.com'') access_token = OAuth::AccessToken.new(consumer,ACCESS_TOKEN,ACCESS_TOKEN_SECRET) oauth_params = {:consumer => consumer, :token => access_token} EventMachine.run do # now,

My ruby version is 1.8.7 I have installed mysql-essential-5.0.90-win32 and using Fedena 2.3.5 List of all gems installed:* columnize (0.3.6) declarative_authorization (0.5.1) fattr (2.2.1) ffi (1.9.0) gem_plugin (0.2.3) highline (1.6.19) i18n (0.4.2) metaclass (0.0.1) mime-types (1.23) mocha (0.14.0) mongrel (1.1.5) mysql (2.8.1) net-ping (1.6.0) prawn (0.6.3) prawn-core (0.6.3) prawn-format

Hi, I use a script called : add_admin.rake When i execute this : ''rake -s -f Rakefile mailserv:add_admin --trace i have this error : ** Invoke mailserv:add_admin (first_time) ** Invoke environment (first_time) ** Execute environment ** Execute mailserv:add_admin rake aborted! undefined method `parse'' for String:Class

Hi guys This is a pretty tricky one. I get a "undefined method `protect_against_forgery?'' for #<ActionView::Base:0x569a3d4>" error when trying to generate a partial from ''outside'' the web site. I do this as I have a rake task that checks for changes periodically in the background, and if it then sees a change it rebuilds the partial and posts the result

I have been working on a project based on Michael Hartl''s book Ruby on Rails Tutorial in order to try to teach myself Ruby on Rails. However, when it tries to render a form designed to allow a user to submit a small message, I get an error saying, "undefined method `model_name'' for NilClass:Class". It says the error is at line 1, which is "<%= form_for

Hi I''m having a issue with one object when try to update the attributes in this object previously saved in the database I have one object comp and one object reg they have this relationship comp has_many regs reg belongs_to comp when run use the method valid? like this current_contribuyente.comps.build(params[:comp]).valid? it returns: IndexError (string not matched) And when

hi i am using rails 2.3.4 and i am facing "no method error" there is possibility to not find method but my question is - is there possibility to error occurred because of empty table? or error in another controller or helper? error trace: Processing QuoteRequestsController#create (for 127.0.0.1 at 2012-10-17 16:07:34) [POST] Parameters: