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  • Rake uninitialized constant RDoc::RDoc

    - by Joshua
    When ever I run make I get this 'uninitialized constant RDoc::RDoc' error rake -T (in Main) rake aborted! uninitialized constant RDoc::RDoc C:/Ruby186/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2383:in `raw_load_rakefile' (See full trace by running task with --trace) --edit Running --trace it seems the only non rails code is from rdoc_rails. Since other people seem to be able to run it fine I assume I am missing a gem or plugin but I can't figure out which.

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  • How do I specify the PATH in NetBeans?

    - by J. Pablo Fernández
    When running Ruby code on NetBeans (like when running the tests) I'm having some failures because a program is not being found. That program is installed somewhere in /opt and while for the shell I get that added to my PATH, it seems NetBeans is not getting it. How do I specify the PATH in NetBeans?

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  • trending topics example for a rails app

    - by Gautam
    Hi, I am new to ruby on rails. I want to build an RSS feed aggregator. How do I find out the trending topics from the stream of data[titles] from various RSS feeds. Could you help me how to achieve this?? Looking forward for your help Thanks in advance Gautam

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  • `var = something rescue nil` behaviour

    - by JP
    In ruby you can throw a rescue at the end of an assignment to catch any errors that might come up. I have a function (below: a_function_that_may_fail) where it's convenient to let it throw an error if certain conditions aren't met. The following code works well post = {} # Other Hash stuff post['Caption'] = a_function_that_may_fail rescue nil However I'd like to have post['Caption'] not even set if the function fails. I know I can do: begin post['Caption'] = a_function_that_may_fail recsue end but that feels a little excessive - is there a simpler solution?

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  • How to use visual_effect on DOM after loading the page?

    - by Acidburn2k
    I would like to make one of the div's hidden while rendring. After page is loaded I would like it to appear on the page using virtual_effect. I know how to do it in JS / jQuery. Is that possible with pure Ruby code using Prototype? update_page_tag doesn't really solves the problem It work ok with :highligth, but I can't get it to work with :apper or :slide_down.

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  • RSpec install error: "Could not find autotest in any of your source paths"

    - by Vinicius Pinto
    When I run: rails generate rspec:install I get this output: identical .rspec exist spec identical spec/spec_helper.rb Could not find "autotest" in any of your source paths. Your current source paths are: (..)/rails_projects/sample_app/lib/templates/rspec/install (..)/rspec-rails-2.3.0/lib/generators/rspec/install/templates I'm new to RSpec, Rails and Ruby. Any tips on how make this work?

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  • require 'rubygems'

    - by demas
    I have seen many samples of Ruby code with this line (for example, http://www.sinatrarb.com/). What is purpose of this require? # require 'rubygems' require 'sinatra' get '/hi' do "Hello world!" end In all cases the code works without this line.

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  • Nested Model Form p1 Railscasts example

    - by arzon
    Has anyone managed to make the example at http://railscasts.com/episodes/196-nested-model-form-part-1 work? When I followed through the sample, it never saves any question nor the answer to the database but it manages to create a new survey entry. I am using: Rails 2.3.5 ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-mswin32] nifty-generators (0.4.0)

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  • tool to export code to html

    - by some guy
    Hi there, I'm looking for a tool that can highlight code (ruby, php, javascript...) like with an IDE and then export the code to html format so that when opening the html page the code looks just like with the IDE Thanks.

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  • Can I send a file to Flex using RubyAMF?

    - by Tam
    I'm generating a PNG file in Flex from graphics drawn by user. I would like to send the file to Ruby on Rails backend and I'm using RubyAMF in other parts of the application. I found ways to upload the file using FileReference which uses HTTP but I prefer to send using RubyAMF ,if possible, as it's more efficient. If this is possible what is your suggested method?

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  • [rails] do we need database level constraints

    - by shrimpy
    i have the same problem as in the following post http://stackoverflow.com/questions/1451570/ruby-on-rails-database-migration-not-creating-foreign-keys-in-mysql-tables so i am wondering, why rails do not support generate foreign key by default??? it is not necessary??? or we suppose to do it manually?

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  • Are there programs that iteratively write new programs?

    - by chris
    For about a year I have been thinking about writing a program that writes programs. This would primarily be a playful exercise that might teach me some new concepts. My inspiration came from negentropy and the ability for order to emerge from chaos and new chaos to arise out of order in infinite succession. To be more specific, the program would start by writing a short random string. If the string compiles the programs will log it for later comparison. If the string does not compile the program will try to rewrite it until it does compile. As more strings (mini 'useless' programs) are logged they can be parsed for similarities and used to generate a grammar. This grammar can then be drawn on to write more strings that have a higher probability of compilation than purely random strings. This is obviously more than a little silly, but I thought it would be fun to try and grow a program like this. And as a byproduct I get a bunch of unique programs that I can visualize and call art. I'll probably write this in Ruby due to its simple syntax and dynamic compilation and then I will visualize in processing using ruby-processing. What I would like to know is: Is there a name for this type of programming? What currently exists in this field? Who are the primary contributors? BONUS! - In what ways can I procedurally assign value to output programs beyond compiles(y/n)? I may want to extend the functionality of this program to generate a program based on parameters, but I want the program to define those parameters through running the programs that compile and assigning meaning to the programs output. This question is probably more involved than reasonable for a bonus, but if you can think of a simple way to get something like this done in less than 23 lines or one hyperlink, please toss it into your response. I know that this is not quite meta-programming and from the little I know of AI and generative algorithms they are usually more goal oriented than what I am thinking. What would be optimal is a program that continually rewrites and improves itself so I don't have to ^_^

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  • how do I redirect from a subdirectory to another directory, but strip off the original subdirectory

    - by Eric Cope
    I have a Ruby on Rails app running on 12001. I am currently redirecting a subdomain to 127.0.0.1:12001 using some ReWriteCond detection. Now I want to redirect my subdirectory to that rails app. http[s]://domain.com/redmine to 127.0.0.1:12001 The current rules apply REQUEST_URI to the above rails path, but I need to strip "/redmine" from the front of REQUEST_URI... Any ideas?

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  • Django OR Rails

    - by Mahesh
    Its not the another language debate, its a decision making discussion. I am a ASP.NET developer, but want to learn other frameworks/language (open source). I don't know from where i should start and why? Django and Rails both seems promising, but i am confused which one i should choose to start, or i should choose some other framework. I know learning the language (python or ruby) is must before start Django or Rails. Please advise.

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  • Matching day in datetime field from sqlite

    - by 99miles
    In Ruby on Rails I'm doing something like: Appointment.find( :first, :conditions => "staff_id = #{staff_id} AND datetimefield = #{datetime}") ... where datetimefield is of course, a datetime field. But, I only want rows where the date is equal to a given day, say 2/12/2011. I don't care about the time. What's an easy way to do this? Thanks!

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  • Usernames are evil. How can I make Restful Authentication only require a username and password, inst

    - by Koning WWWWWWWWWWWWWWWWWWWWWWW
    As the title sais: How can I use the Restful Authentication Plugin with Ruby on Rails. When I want to create a new user, it requires me a (wrong-named, confusing field) login (= username), email address and password. However, I want, like Facebook does, only require the user to enter an email address and password, not a username. People will also login with this email address. Can anyone help me?

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  • How do I load Formtastic to test it?

    - by Alan
    I am using Rails 2.0.2 and following Github installation instructions: 1. add as gem source ie "gem sources -a http://gemcutter.org/".....ok 2. install gem ie "gem install formtastic"....gives error, could not find formtastic locally or in a repository I am learning Ruby on Rails and have no knowledge of gems

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  • How do I include a module in a namespaced class?

    - by snl
    I am having trouble including a module in a namespaced class. The example below throws the error uninitialized constant Bar::Foo::Baz (NameError). What basic piece of Ruby knowledge am I missing here? module Foo module Baz def hello puts 'hello' end end end module Bar class Foo include Foo::Baz end end foo = Bar::Foo.new

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  • Scaffolding Extensions: NoMethodError

    - by marienbad
    Not sure if many people are familiar with Scaffolding Extensions for Ruby, but I've looked through their docs, forums, and even the source code of the Heroku test site, and not found an answer. I made a basic Sinatra app and followed right from the RDoc's instructions: require 'scaffolding_extensions' require 'sinatra/base' class Thingy < Sinatra::Base scaffold_all_models end gives undefined method 'scaffold_all_models' for Thingy:Class (NoMethodError) and I know Scaffolding Extensions is loadable because I can successfully set some config variables in its classes.

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  • Mechanize complex form input name

    - by ADAM
    Hi there i am trying to access a form in mechanize with ugly characters in the object name similar to this agent = Mechanize.new page = agent.get('http://domain.com) form = page.forms[0] form.ct600$Main$LastNameTextBox = "whatever" page = agent.submit(form) The problem is the $ in the html name is messing with ruby because Is there another method i could use ie: form.element_by_name("ct600$Main$LastNameTextBox") = "whatever" Unfortunately i cant change the html

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