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  • Where are my ruby gems?

    - by scrrr
    Hello, Linux newbie question I guess.. How can I find out where gem installs the gems on my Ubuntu 10 system? I want to read gem sourcecode and perhaps change things up a bit.

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  • Ruby on Rails function grapher

    - by Hock
    Hi, I'm looking for a function grapher that I can use in a small Rails application I'm working on for my university. Is there anything out there? If it needs the values (points) is not a problem but it would be better if it just parsed the equation. The functions will be 100% in ruby format (for example Math.exp(3*x))... Thanks a lot! Nicolás Hock

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  • how can i tell ruby to use the html string

    - by Matt
    i have this "<img src='#{picture.url(:tiny)}'>" which prints to this &lt;img src='/system/pictures/2/tiny/Womacdsf.jpg?1294942797'&gt;, &lt;img src='/system/pictures/3/tiny/Womacdsf_3017.jpg?1294942797'&gt;, &lt;img src='/system/pictures/4/tiny/Womacdsf_8012.jpg?1294942797'&gt;, … (8) as you can see this is doing the &lt; and &gt; instead of the < and how can i tell ruby this is not what i want

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  • Is it possible to use best_in_place with typeahead from twitter bootstrap?

    - by Dave H
    Basically, I am using best_in_place in my rails webapp to let users edit their profile info in place. The thing is, I would like users to be presented with a typeahead form for certain entries.. Here's what I'm working with: <p>College/University: <input type="text" class="span3" style="margin: 0 auto;" data-provide="typeahead" data-items="8" data-source='["University of Pennsylvania","Harvard","Yale","Princeton","Cornell","Brown","Columbia","Dartmouth"]'></p> This gives me a working form box with typeahead. However, I want to be able to wrap this in best_in_place with something like <%= best_in_place @student, :education %> so that users only see the typeahead form when they click on the text, and upon clicking away from the box or hitting enter the selection is stored in the database. Is there a reasonably easy way to do this?

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  • error when running mysql2psql

    - by Mateo Acebedo
    I am trying to migrate a mysql database to a psql database, and after installing, I write the running command and instead of generationg the mysql2psql.yml file, this is what is being printed on my git bash window. $ mysql2psql c:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require': c annot load such file -- 2.0/mysql_api (LoadError) from c:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require' from c:/Ruby200/lib/ruby/gems/2.0.0/gems/mysql-2.8.1-x86-mingw32/lib/mys ql.rb:7:in `rescue in ' from c:/Ruby200/lib/ruby/gems/2.0.0/gems/mysql-2.8.1-x86-mingw32/lib/mys ql.rb:2:in `' from c:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require' from c:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require' from c:/Ruby200/lib/ruby/gems/2.0.0/gems/mysql2psql-0.1.0/lib/mysql2psql /mysql_reader.rb:1:in `' from c:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require' from c:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require' from c:/Ruby200/lib/ruby/gems/2.0.0/gems/mysql2psql-0.1.0/lib/mysql2psql .rb:5:in `' from c:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require' from c:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require' from c:/Ruby200/lib/ruby/gems/2.0.0/gems/mysql2psql-0.1.0/bin/mysql2psql :5:in `' from c:/Ruby200/bin/mysql2psql:23:in `load' from c:/Ruby200/bin/mysql2psql:23:in `' Any thoughts?

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  • Rails 3 memory issue

    - by Erik
    Hello! I'm developing a new site based on Ruby on Rails 3 beta. I knew this might be a bad idea considering it's just beta, but I still thought it might work. Now though I'm having HUGE problems with Rails consuming huge ammounts of memory. For my application today it consumes about 10 mb per request and it doesn't seem to release it either. So I thought this might be because of bloat in my application and thus I created a test app just to compare. For my test app I just generated a model with a scaffold and then created about 20 records on this model. I then went to the index page and hit refresh and I could immediately see memory taking off! Less than my app but still about 1-3 mb per request. I'm working in OSX Leopard, with Ruby 1.8.7, Rails 3.0.0.beta and a SQLLite db for development. Does anyone recognize my problem? I would really appreciate some help here. :/ Thanks!

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  • ruby_threadptr_data_type error

    - by declan
    I'm starting up a new rails app with the latest version of rails (3.1.3). When I try to invoke the rails generator things get a little rough. First I fixed this bug, and now I'm getting this one /home/declan/.rvm/gems/ruby-1.9.3-p0@lcm/gems/ruby-debug-base19-0.11.25/lib/ruby- debug-base.rb:1:in `require': /home/declan/.rvm/gems/ruby-1.9.3-p0@lcm/gems/ruby- debug-base19-0.11.25/lib/ruby_debug.so: undefined symbol: ruby_threadptr_data_type - /home/declan/.rvm/gems/ruby-1.9.3-p0@lcm/gems/ruby-debug-base19-0.11.25 /lib/ruby_debug.so (LoadError) from /home/declan/.rvm/gems/ruby-1.9.3-p0@lcm/gems/ruby-debug-base19-0.11.25/lib/ ruby-debug-base.rb:1:in `<top (required)>' There's a discussion about this going on here, but I can't make enough sense of it to get things to work.

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  • Installing MySQL-Ruby on Linux and Ruby 1.9.2

    - by Klam
    I am having an absurdly difficult time getting MySQL-Ruby to install on RedHat 4 using Ruby 1.9.2. I am behind a company proxy that prevents pretty much any package tool from connecting to external repositories so "gem install mysql" isn't going to cut it. I have tried installing the mysql-ruby gem locally but it fails with a mysterious: $gem install mysql-2.8.1.gem Building native extensions. This could take a while... ERROR: Error installing mysql-2.8.1.gem: ERROR: Failed to build gem native extension. /ns/local/apps/internal/SWS/MetricsPublisher/ruby/bin/ruby extconf.rb checking for mysql_query() in -lmysqlclient... no checking for main() in -lm... yes checking for mysql_query() in -lmysqlclient... no checking for main() in -lz... yes checking for mysql_query() in -lmysqlclient... no checking for main() in -lsocket... no checking for mysql_query() in -lmysqlclient... no checking for main() in -lnsl... yes checking for mysql_query() in -lmysqlclient... no checking for main() in -lmygcc... no checking for mysql_query() in -lmysqlclient... no *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. I have also tried building the module myself by following the included readme. The results: $ruby extconf.rb --with-mysql-include=/path_to_my_sql_headers/mysql/include/ --with-mysql-lib=/path_to_my_sql_lib/mysql/lib/ checking for mysql_query() in -lmysqlclient... no checking for main() in -lm... yes checking for mysql_query() in -lmysqlclient... no checking for main() in -lz... yes checking for mysql_query() in -lmysqlclient... no checking for main() in -lsocket... no checking for mysql_query() in -lmysqlclient... no checking for main() in -lnsl... yes checking for mysql_query() in -lmysqlclient... no checking for main() in -lmygcc... no checking for mysql_query() in -lmysqlclient... no *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Does anybody have any ideas? Quite frankly, I don't even care if MySQL-Ruby specifically works, I just want ANY means of connecting to a MySQL DB through a ruby call in ruby 1.9. Thanks.

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  • [BUG] gc_sweep() with ruby 1.8.7

    - by kgrad
    I have a rails app being developed with mongrel 1.1.5. I can run the app and click on 3 or 4 links, but after that mongrel always crashes with an error: [BUG] gc_sweep(): unknown data type 0x0. It happens on both windows 7 and mac os x snow leopard, so it has to be something in my code, or something wrong with ruby 1.8.7 (less likely). Has anyone else experienced this? Is there a fix or likely cause? thanks edit: interestingly, it does not crash when deployed via heroku.

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  • ruby super keyword

    - by ash34
    Hi, From what I understand, 'super' keyword invokes a method with the same name as the current method in the superclass of the current class. Below in the autoload method, there is a call to 'super'. I would like to know in which superclass I would find a method with the same name or what does the call to 'super' do module ActiveSupport module Autoload ... def autoload(const_name, path = @@at_path) full = [self.name, @@under_path, const_name.to_s, path].compact.join("::") location = path || Inflector.underscore(full) if @@eager_autoload @@autoloads[const_name] = location end super const_name, location end .... end end module ActiveRecord extend ActiveSupport::Autoload ... autoload :TestCase autoload :TestFixtures, 'active_record/fixtures' end This code is from the rails master branch. Thanks much.

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  • Deploying Sinatra app on Dreamhost/Passenger with custom gems

    - by darkism
    I've got a Sinatra app that I'm trying to run on Dreamhost that makes use of pony to send email. In order to get the application up and running at the very beginning (before adding pony), I had to gem unpack rack and gem unpack sinatra into the vendor/ directory, so this was my config.ru: require 'vendor/rack/lib/rack' require 'vendor/sinatra/lib/sinatra' set :run, false set :environment, :production set :views, "views" require 'public/myapp.rb' run Sinatra::Application I have already done gem install pony and gem unpack pony (into vendor/). Afterwards, I tried adding require 'vendor/sinatra/lib/pony' to config.ru only to have Passenger complain about pony's dependencies (mime-types, tmail) not being found either! There has to be a better way to use other gems and tone down those long, ugly, redundant requires. Any thoughts?

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  • Force ruby to use dbi Gem instead of dbi in site_ruby

    - by sutch
    I'm using: Windows 7 Ruby 1.8.6 One-Click Installer DBI version 0.4.3 installed using RubyGems What I see when executing these commands: C:ruby -v ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-mswin32] C:gem -v 1.3.1 C:ruby -r rubygems -r dbi -e "puts DBI::VERSION" 0.2.2 C:gem list dbi *** LOCAL GEMS *** dbi (0.4.3) Why do ruby scripts use the DBI installed in site_ruby rather than the DBI installed with RubyGems? Updated to respond to Luis Lavena's answer... Here's what happened when I attempted what you suggest: C:ruby -r rubygems -e "require 'rubygems'; puts DBI::VERSION" -e:1: uninitialized constant DBI (NameError) And when I updated to require DBI: C:ruby -r rubygems -e "require 'rubygems' ; require 'dbi' ; puts DBI::VERSION" 0.2.2 Why wouldn't RubyGems override the built-in library?

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  • How to reflect in the database a new belongs_to and has_many relationship in Ruby on Rails

    - by Ken I.
    I am new to rails (usually a python guy) and have just been trying to build a simple task manager application for fun. I am using Devise for authentication and have a single Task object I am trying to relate to a user. I have added the following to the Task model: class Task < ActiveRecord::Base belongs_to :user end and I have added the following in my User model for Devise: class User < ActiveRecord::Base has_many :dreams <<normal Devise stuff>> end Whenever I added this information I then ran: rake db:migrate. It then gave me an error that the database field did not exist for user_id when I tried to do anything with it. I am sure it is something rather simple that I am missing. Thanks for the help.

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  • Google Maps, Ruby on Rails, Zoom level with one marker

    - by Enric Ribas
    I am adding google maps support with apneadiving / Google-Maps-for-Rails (thanks awesome gem) I am finding one slight glitch, however, which very likely is my fault. auto_zoom works great when there are multiple markers. However, when there is only one marker it is zoomed in to the max level which is not pretty. "zoom" will only work when auto_zoom is false, so that's not what I want. So therefore you could use "maxZoom" but now users cannot zoom in manually beyond that point which is not what I want. Is there a way around this? Is my explanation making sense? Is this a limitation of Google Maps API? Thanks...

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  • rails bundler error installing nokigiri (1.5.5), and Bundler cannot continue

    - by Michael Durrant
    An error occurred while installing nokogiri (1.5.5), and Bundler cannot continue How to fix and get past the error? Installing nokogiri (1.5.5) with native extensions Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension. /usr/bin/ruby1.8 extconf.rb checking for libxml/parser.h... yes checking for libxslt/xslt.h... no ----- libxslt is missing. please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.

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  • Is there a good resource for learning Rails in depth? [closed]

    - by Kocheez
    I've been developing rails applications for about 6 months now (I was originally a java developer) and I'm getting familiar enough with building applications that I want to take my rails knowledge to the next level. The majority of books and learning materials I've found deal mostly with "how to use rails" rather than "how it works". I was wondering if there are any good resources for getting a really in depth understanding of the framework, such as how modules and classes are loaded, the underlying architecture, how servers interact, etc... Any tips on learning more would be greatly appreciated

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  • Integrate Jasper in Rails 3

    - by AndreDurao
    I'm trying to integrate a rails 3 app with jasper following this wiki: http://wiki.rubyonrails.org/rails/pages/HowtoIntegrateJasperReports But it seems that a lot of information isn't updated so it's been very hard to make it work by myself. I've also read a topic at ruby-forum: http://www.ruby-forum.com/topic/139453 with some details explained but still couldn't make it work. My first problem is related with the render_to_string method: When the controller method runs I receive a "Template is missing" error: this is the method: def report @customers = Customer.all send_doc(render_to_string(:template => report_customers_path, :layout => false), '/pdfs', 'report.jasper', "customers", 'pdf') end Although this seems simple I'm not understanding why is this happening. Doesn't render_to_string with layout = false suposed to get me the string result of that action? I also tried :action instead of :template, but it does the same. If anybody with some expertise with this integration could help... Thanks in advance, André

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  • rails is loading from routes instead of the public folder

    - by djacobs7
    I have a rails app. I have a file in #{RAILS_ROOT}/public/swfs/somthing.swf. Locally, when running with webrick, when I go to the url localhost:3000/swfs/something.swf, my swf loads just fine. My routes.rb file looks like the following ActionController::Routing::Routes.draw do |map| map.connect ':controller/:action/:id' map.connect ':controller/:action/:id.:format' end Then, I started running the app with apache. When I visit myurl.com/swfs/something.swf, I get the following error message: Routing Error No route matches "/swfs/something.swf" with {:method=>:get} It looks like, for some reason, it is loading using the rails routes, instead of going to the public folder first. Any suggestions?

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  • [Rails] OAuth with Digg API

    - by Karl
    I'm attempting to get Rails to play nice with the Digg API's OAuth. I'm using the oauth gem (ruby one, not the rails one). My code looks approximately like this: @consumer = OAuth::Consumer.new(API_KEY, API_SECRET, :scheme => :header, :http_method => :post, :oauth_callback => "http://locahost:3000", :request_token_url => 'http://services.digg.com/1.0/endpoint?method=oauth.getRequestToken', :access_token_url => 'http://services.digg.com/1.0/endpoint?method=oauth.getAccessToken', :authorize_url => 'http://digg.com/oauth/authorize') @request_token = @consumer.get_request_token session[:request_token] = @request_token.token session[:request_token_secret] = @request_token.secret redirect_to @request_token.authorize_url Which is by-the-book in terms of what the gem documentation gave me. However, Digg spits a "400 Bad Request" error back at me when @consumer.get_request_token is called. I can't figure out what I'm doing wrong. Any ideas?

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  • Test (with RSpec) a controller outside of a Rails environment

    - by ramon.tayag
    I'm creating a gem that will generate a controller for the Rails app that will use it. It's been a trial and error process for me when trying to test a controller. When testing models, it's been pretty easy, but when testing controllers, ActionController::TestUnit is not included (as described here). I've tried requiring it, and all similar sounding stuff in Rails but it hasn't worked. What would I need to require in the spec_helper to get the test to work? Thanks!

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  • building a backend for generating webquests with rails

    - by buk
    hello, i want to learn rails and as a project to learn rails i came across webquests. what a webquest is is clearly written here1 and this is a example how a webquest look like. i started with script/generate nifty_scaffold introduction index and repeat this for every section like task , Process, Evaluation and so on. but i dont think thats the right way because i have a lot of code for the same thing. on the other side i am more flexible on designing views or controllers instead of having only one controller foer all pages. i am not asking here to get code. i am asking who to "build" such a backend where you can click on "New Webquest" a form comes up and you can enter all the text who belongs to the topic. maybee i can add some drawings later. i hope anyone can show me how to do that. or post me some links or some rtfms :D regards, buk

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  • Encryption-Decreyption in Rails

    - by Salil
    Hi All, I am using "require 'digest/sha1'" ro encrypt my password and save into database. While login i authenticate by matching the encrepted passowrd saved in database and again encrypted the one use enter in password field. As of now everything works fine but now i want to do 'Forgot Passowrd' functionality.to do this i need to decrypt the password which is saved in database to find original one.How to decrypt using 'digest/sha1' ? Or someone know any algoritham which supports encryption & decryption as well? Iam using ruby-on-rails so i need Ruby way to accomplish it.

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  • How to create migration in subdirectory with Rails?

    - by Adrian Serafin
    Hi! I'm writing SaaS model application. My application database consist of two logic parts: application tables - such as user, roles... user defined tables (he can generate them from ui level) that can be different for each application instance All tables are created by rails migrations mechanism. I would like to put user defined tables in another directory: db/migrations - application tables db/migrations/custom - tables generated by user so i can do svn:ignore on db/migrations/custom, and when I do updates of my app on clients servers it would only update application tables migrations. Is there any way to achieve this in rails?

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