similar to: undefined method join

Hello Rails, I have a problem. I would like to use captcha in one of my project. When I did try to install, this is what I got $ sudo gem install captcha Building native extensions. This could take a while... ERROR: Error installing captcha: ERROR: Failed to build gem native extension. /usr/bin/ruby1.8 extconf.rb extconf.rb:1:in `require'': no such file to load -- mkmf (LoadError)

Hi, Using Netbeans 6.7.1, Rails Gem Version 2.3.2 MySQL Server 5.1 I am currently doing the depot application from the pragmatic programmer book (agile web development with rails) everything has been fine up until the point of creating sessions. I know they are using an earlier version of Ruby and the gems version is 2.2.2. As soon as I put the necessary code in the website no longer works and

Marnen Laibow-Koser wrote: > Ralph Shnelvar wrote: >> newbie here ... >> >> I am tracing logic putting puts and logger.info calls in my code. >> >> I _think_ Rails is buffering output so that I can''t see what happens >> until I close out webrick. > > But you are probably wrong. If you watch the log scroll by, you will > generally see

Hey all, I understand that a def self.abc, for example, is a class method, which allows you to call its contents by just referencing model.abc (rather than model.new.abc). However, what is its role when located in a method inside a model like in the code below. Also in the code below, you see :: located in the method. Isn''t that used for modules and namespaces? If so, why is it located

I can''t imagine what I''m trying to do is complicated at all in Rails. Yet, I am now getting this error: undefined method `state'' for :StudentFailState:Symbol. student.rb has_one :student_fail attr_accessor :student_fail_attribute #controller def student_fail @student = @student.find params[:id] def update_student_fail @student.build_student_fail

Hey all, Let''s say you are not going to use an html form. Rather the user will input data in a third-party application that will communicate with the rails controller through http requests, but serves as a replacement to the html. In other words, it''s taking the place of front end. My question is can you update the attributes of another table, let''s say studentfails

Hi, I follow the instructions below to set up a git repository with gitosis on my home ubuntu server. I can connect to the repository remotely perfectly and set up a new repository named My_Project. I successfully push the content of My_Project to this repository using the remote computer with an SSH key. Now I want to clone My_Project locally onto another directory within the unbuntu server.

Hello all. I''m new to RoR. I am having trouble trying to get a simple edit/update going. Everytime I hit submit, I get the following error: +++++++++++++++++++++ Couldn''t find Content without an ID Request Parameters: {"format"=>"#<content:0x4d3daac>", "commit"=>"Update", "_method"=>"put",

In the example below, what is the dash doing between the class attribute and array: (field_helpers - [:label, :check_box, :radio_button, :fields_for, :hidden_field, :file_field]).each do |selector| -- 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

append_features(mod) The documentation says: When this module is included in another, Ruby calls append_features in this module, passing it the receiving module in mod. Ruby’s default implementation is to add the constants, methods, and module variables of this module to mod if this module has not already been added to mod or one of its ancestors. See also Module#include. What if this module is

Hey all, Chronic will parse a date range in console: Chronic.parse(1/1/2011 - 1/1/2012, :guess => false) => 2012-01-01 12:00:00 -0500..2012-01-01 12:00:01 -0500 However, when I use logger to check if it''s parsing in application, it is not: logger.info "The value of history date is #{history_date}" => The value of history date is 1/1/2011 - 1/1/2012

>> reload! Reloading... => true >> puts Class < Module true => nil >> puts Module < Class false => nil >> puts Module < Object true => nil >> puts Object < Module false => nil >> Object.parent => Object The above indicates that the Class object instance inherits from the Module object instance and the Module object instance

"Object is the root of Ruby''s class hierarchy. Its methods are available to all classes unless explicitly overridden." Wouldn''t Class class be at the root of the class hierarchy? After all, look at this: 1.9.2p290 :006 > Object.instance_of? Class => true Object is an instance of class, after all we can use one of Class'' instance methods on Object:

What module of ActionView are the <% %> and <%= %> defined in? -- 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to

There''s a number of calls in the Rails source to convert_to_model, which takes an activerecord object instance: convert_to_model(object) Here''s the thing. All convert_to_model does is calls to_model, which returns self (the ActiveModel instance). Am I missing something here? Why call a method that returns the same thing? @user => #<User id: 3, name:

For example, you see files called rails/actionpack/lib/action_controller/base.rb which adds methods and such to the open module ActionController. What scope is ActionController in? Is it just called the global scope? Obviously, there is namespace resolution lookup. And a good example of this is in the Base class of the same file. It references one module like this: AbstractController::Layouts

Rails extends Ruby with mattr_accessor (Module accessor). As Ruby''s attr_accessor generates getter/setter methods for instances, mattr_accessor provide getter/setter methods at the module level. In below example, you see that mattr_accessor declared in the class context of LookupContext. It''s declared in class, not module. However, modules are defined in LookupContext, for

Hi all, In curl (the command line program), I can successfully log a user in using devise: def create respond_to do |format| format.json { if user_signed_in? return render :json => {:success => true, :errors => ["Already logged in."]} end resource = warden.authenticate!(:scope => resource_name, :recall =>

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Hey all, I am getting this error: NoMethodError (undefined method `gsub!'' for 2012-01-22 17:00:00 -0500..2012-01-23 00:00:00 -0500:Chronic::Span): in this code: date_range = Chronic.parse(the_date, :guess => false) reports.sum_distance_by_date(date_range).each do |d| u[:m] << d end def