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• Redirect folder to different server

  - by yuval

  I know you can redirect subdomains to a different server, but can you do the same with folders? Say I have example.com. I can redirect mysubdomain.example.com to a different server, but can I redirect example.com/mysubdomain to a different server? I'd like to host a rails app in that folder on a site that runs php while still maintaining good search engines ratings (by not creating a sub domain which in my experience in recognized as a different site). Any help? Thanks!

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• Customizing Number of Page Links Rendered With will_paginate?

  - by Moe

  I'm using the will_paginate gem for my Rails project and it's working beautifully. Unfortunately, on paginated result sets with a larger number of pages, the link section is too wide. Instead of: « Previous 1 2 … 5 6 7 8 9 10 11 12 13 … 18 19 Next » I would like to show: « Previous 1 2 … 5 6 7 8 9 … 18 19 Next » How can I reduce the number of page links being rendered? I looked at the will_paginate docs on github but couldn't find a solution. Thanks! Moe

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• Problem with rake db:migrate

  - by Shreyas Satish

  When I try rake db:migrate, I get the following error: !!! The bundled mysql.rb driver has been removed from Rails 2.2. Please install the mysql gem and try again: gem install mysql. rake aborted! no such file to load -- mysql And when I try to "gem install mysql" Building native extensions. This could take a while... ERROR: Error installing mysql: ERROR: Failed to build gem native extension. /usr/bin/ruby extconf.rb Can't find header files for ruby. Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/mysql-2.8.1 for inspection. I checked the rubygems folder and mysql gem has been installed. Any ideas? Cheers

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• Why do users have to enter a 7-digit twitter PIN to grant my application access?

  - by Tony

  I am implementing some ruby on rails code tweet stuff for my users. I am creating the proper oauth link...something like http://twitter.com/oauth/authorize?oauth_token=y2RkuftYAEkbEuIF7zKMuzWN30O2XxM8U9j0egtzKv But after my test account grants access to twitter, it pulls up a page saying "You've successfully granted access to . Simply return to and enter the following PIN to complete the process. 1234567" I have no idea where the user should enter this PIN and why they have to do that. I don't think this should be a necessary step. Twitter should be redirecting the user to the callback URL I provided in the application settings. Does anyone know why this is happening? UPDATE I found this article that states I need to send my users to this URL (note "authenticate" instead of "authorize"): http://twitter.com/oauth/authenticate?oauth_token=y2RkuftYAEkbEuIF7zKMuzWN30O2XxM8U9j0egtzKv I made the change but Twitter redirects the user to the authorize path after he clicks "Allow" which then gives him the 7 digit PIN again!

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• Mongomapper - bootstrapping techniques

  - by egarcia

  I've just begun creating a rails application using mongomapper for my models. I'm wondering what solution should I use for bootstrapping my app with it. All my previous experience is with ActiveRecord & PostgreSQL, in which I have used several gems for bootstrapping. The one I liked the most was bootstrapper (+ factorygirl + faker). Does anyone know whether these work ok with mongomapper? Can anyone suggest better alternatives? Is there anything obvious I need to know when bootstrapping mongodb?

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• How to use Railroad to create a models diagram that show methods

  - by SeeBees

  Railroad is a great UML tool for Ruby on Rails. It can automatically generate class diagrams of models and controllers. For models, a railroad-generated class diagram shows attributes of each model and the associations between one model and another. A sample diagram can be found here. It is very useful for a developer to see attributes and associations of models. While attributes and associations reveal the inner states and relationships of models, methods specify their behaviours. They are all desirable in a class diagram. I would like railroad to generate a class diagram that also lists methods for models, which will help me to know what each model does. I know methods are displayed in a diagram that is generated for controllers, but I don't see such an option for a diagram of models. Does someone know how to do that with railroad? Or is that possible? Thanks!

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• mysql compatability error - rake aborted error on rake db:create

  - by user1904563

  I'm a starter in ROR I' m using ruby 1.9.3 and rails 3.2.1 This is what appears on using rake db:create command **>rake db:create rake aborted! Please install the mysql adapter: 'gem install activerecord-mysql-adapter' <can't activate mysql <~> 2.8.1>, already activated mysql-2.9.0-x86-mingw32. Make sur all dependancies are added to Gemfile.>** Have installed mysql gem and copied libmysql.dll file to Ruby193/bin (Phpmyadmin and xampp also works good). Please help me to solve this issue.

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• Ruby Iconv works with irb and ruby debugger but not in a unit test

  - by Mark B

  I'm running Ruby 1.8.7 with Rails 2.3.5 on Ubuntu 10.04 64-bit. I've written a method that should take a string like this, "École À la Découverte" and output a file-system name like this "ecole_a_la_decouverte": (Iconv.new('US-ASCII//TRANSLIT', 'utf-8').iconv "École À la Découverte").gsub(/[^\w\s-\—]/,'').gsub(/[^\w]|[_]/,' ').split.join('_').downcase When I test this line in my code, the test always fails saying that "cole_la_dcouverte" is unequal to "ecole_a_la_decouverte". The odd thing is that if I insert a debugger line and use the debugger console the test passes. As well, running this line manually in irb seems to work. Does anyone know what's going on and why this test is failing? My only thought is that including the debugger or irb somehow adds more support for UTF-8 but I'm at a loss to figure out where to go next. Thanks in advance!

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• Retrieve Gmail using Ruby

  - by Kartik Rao

  I need to retrieve emails from my Gmail account using Ruby on Rails. I'm currently using this piece of code, but it gives me a timeout error everytime. require 'net/pop' pop = Net::POP3.new 'mail.isp.com' pop.start '[email protected]', 'password' if pop.mails.empty? puts "No mail." else puts "You have #{pop.mails.length} new messages." puts "Downloading..." pop.mails.each_with_index do|m,i| File.open( "inbox/#{i}", 'w+' ) do|f| f.write m.pop end m.delete end end This is the error I recieve /usr/lib/ruby/1.8/timeout.rb:60:in `new': execution expired (Timeout::Error) from /usr/lib/ruby/1.8/net/protocol.rb:206:in `old_open' from /usr/lib/ruby/1.8/net/protocol.rb:206:in `old_open' from /usr/lib/ruby/1.8/net/pop.rb:438:in `do_start' from /usr/lib/ruby/1.8/net/pop.rb:432:in `start' from script/mail.rb:4 Any help will be appreciated!

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• Dynamic find methods Vs conditional statements

  - by piemesons

  Student.find(:all, :conditions => [‘name = ? and status = ?’ ‘mohit’, 1]) Vs Student.find_all_by_name_and_status(‘mohit’, 1) Both the queries will result the same set of row but first one is preferable cause in the second way there will be exception generated method_missing and then rails will try to relate it as dynamic method. if fine then result set to returned. Can any body explain me this in a good manner. What exactly is happening behind the screen. Please correct me if i am wrong.

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• What CI server and Configuration Management tools I should use

  - by Bera

  Hi ! What CI server and Configuration Management tools I should use together for a truly development and deploy maintenance. There isn't the de facto rails sustainable environment, is there? Some assumptions: • code control version ok - git (de facto tool) • test framework ok - whatever (rspec is my choice) • code coverage and analysis ok - whatever (metric-fu, for example) • server stack ok - (Passenger for example) • issue tracker (RedMine) • etc, ... I'm want to play if integrity and moonshine projects, for me it's a good for beginning, isn't it? What do you think about this? Thanks, Bruno

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• Sending Facebook notifications

  - by antpaw

  Hey i have a little facebook iframe application written with rails and the facebooker plugin. I can loop through the users friends and see whether they also have this application. To do this I use a fql qeury, and my own html (no fbml). Now i want to create a button right beside every friend who doesn't have this app, that sends an invite massage. Is it possible to do this without this FBML/JS voodoo? I looked through the RESTful api but the only thing i could found was this deprecated method :( Can someone provide me an code example on how to do this? I really don't want to use this FBML stuff because it doesn't fit into the ui concept of the app, but if that the only way, please explain how to do this (every fbml tag I've tried is just invisible :( ) Thanks a lot.

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• ActiveRecord Associations Question

  - by Mutuelinvestor

  I'm new to rails and have volunteered to help out the local High School Track team with a simple database that tracks the runners performances. For the moment, I have three models: Runners, Race_Data and Races. I have the following associations. Runners have_many Race_Data Races have_many Race_Data I also want create the association Runners Have_Many Races Through Race_Data, but as my look at the diagram I have drawn, there is already a many to one relationship from Race_data to Races. Does the combination of Runners having many Race_Data and Race_Data having one Race imply a Many_to_Many relationship between Runners and Races?

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• Accessing ruby counter cache

  - by Julian

  Hi all, I'm playing around with a fork of acts_as_taggable_on_steroids as a learning exercise. The version I'm looking at does some stuff I don't understand to calculate Tag counts. So I thought I'd do a version using PORC (Plain Old Rails Counters): class Tagging < ActiveRecord::Base #:nodoc: belongs_to :tag, :counter_cache => "tagging_counter_cache" ... I thought tagging_counter_cache was transparently accessed when I access tag.taggings.count but apparently not? Do I really have to access tag.tagging_counter_cache explicitly? >> tag.taggings.count SQL (0.7ms) SELECT count(*) AS count_all FROM `taggings` WHERE (`taggings`.tag_id = 16) Same for size. It's cool if that's the case but just wanted to check.

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• Signup form using Braintree Transparent Redirect

  - by Robin Fisher

  Hi, I'm developing an application in Rails and want the user to be able to signup and provide their card details on one form. I'm using the Braintree API and their transparent redirect, which means that the form data is posted directly to Braintree. How can I store and later retrieve the non-payment related information provided by the user from that form e.g. account name, username? These values are not returned in the response provided by Braintree. If you look at the Basecamp signup process, this is the result I want to achieve. Thanks Robin

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• ActionController::MethodNotAllowed

  - by Lowgain

  I have a rails model called 'audioclip'. I orginally created a scaffold with a 'new' action, which I replaced with 'new_record' and 'new_upload', becasue there are two ways to attach audio to this model. Going to /audioclips/new_record doesn't work because it takes 'new_record' as if it was an id. Instead of changing this, I was trying to just create '/record_clip' and '/upload_clip' paths. So in my routes.db I have: map.record_clip '/record_clip', :controller => 'audioclips', :action => 'new_record' map.upload_clip '/upload_clip', :controller => 'audioclips', :action => 'new_upload' When I navigate to /record_clip, I get ActionController::MethodNotAllowed Only get, head, post, put, and delete requests are allowed. I'm not extremely familiar with the inner-workings of routing yet. What is the problem here? (If it helps, I have these two statements above map.resources = :audioclips

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• hpricot throws exception when trying to parse url which has noscript tag

  - by anusuya

  I use hpricot gem in ruby on rails to parse a webpage and extract the meta-tag contents. But if the website has a <noscrpit> tag just after the <head> tag it throws an exception Exception: undefined method `[]' for nil:NilClass I even tried to update the gem to the latest version. but still the same. this is the sample code i use. require 'rubygems' require 'hpricot' require 'open-uri' begin index_page = Hpricot(open("http://sample.com")) puts index_page.at("/html/head/meta[@name='verification']")['content'].gsub(/\s/, "") rescue Exception => e puts "Exception: #{e}" end i was thinking to remove the noscript tag before giving the webpage to hpricot. or is there anyother way to do it??

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• Creating a function in ruby

  - by Micke

  Hello, i have some problem with creating a function to my Rails app. I want it to work like this: str = "string here" if str.within_range?(3..30) puts "It's withing the range!" end To do that i added this into my application helper: def within_range?(range) if self.is_a?(String) (range).include?(self.size) elsif self.is_a?(Integer) (range).include?(self) end end But i get this error: undefined method `within_range?' for &quot;&quot;:String Do you know what the problem is? and could you please help me. If there is a easier way please say so then. Thanks in advance, Micke.

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• Any working tutorials for Authlogic?

  - by Mark Wilbur

  I've been trying to build my first rails app and have gotten stuck on the issue of user authentication. I've found a number of tutorials for using various plug-ins to do this, but so far every single one of them is out-dated, and as a result, broken! From what I've read, I think Authlogic may be the best fit for me, and I've tried two things: 1) Going through Railscast, episode #160 (which is a tutorial for setting it up) 2) Using Ryan B's nifty_authentication gem with the --authlogic tag In both cases, I get the following error as soon as I try to do anything with a user: undefined local variable or method `acts_as_authentic' for # I believe this is from the User model: class User < ActiveRecord::Base acts_as_authentic end I'm sure I've installed the authlogic gem, and I've added config.gem "authlogic" to my environment.rb Any ideas about what's wrong? Anybody know of a complete and up to date tutorial for adding user authentication?

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• I want actions not views.

  - by Ben

  Rails is doing my head in. I'm trying now to put something together to pull screen scraped data from site X through to client Y via a ruby script on server Z I don't want views, I just want the request to look like domain.com/action/method Inside routes.rb I have: match ':controller(/:action(/:id(.:format)))' But it still won't work. I just get ActionView::MissingTemplate in the log. Achtung! If I deliberately put a faulty method in that subsequently calls render - the log file indicates the method executed badly, so I don't think it's something wrong with the "action" controller.

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• Python vs Ruby Top Sites

  - by Steve

  Hi, I was just trying to find some comparison of the existing python web frameworks and ruby frameworks. There are few promising frameworks in python but I was not able to find a top 100 site using python except for google, which uses python extensively. Python has great frameworks but I am not able to find a really popular sites using python. Definitely most of the site would use python for background processing and stuff. On the other hand, ruby on rails has a few sites like twitter,hulu,yellowpages,scribd are present in top 100 sites. Can you mention some really popular sites using either of these languages.

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• Use super with before_validation.

  - by krunal shah

  I have this code in my every model. Class people def before_validation @attributes.each do |key,value| self[key] = nil if value.blank? end end end Now i want to put my loop in separate module. Like Module test def before_validation @attributes.each do |key,value| self[key] = nil if value.blank? end end end And i want to call this before_validation this way Class people include test def before_validation super .....Here is my other logic part..... end end Are there any way to do it like that in rails??

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• How to get an array from a database in Rails3 even when there's only one record?

  - by yuval

  In Rails3, I have the following line: @messages = Message.where("recipient_deleted = ?", false).find_by_recipient_id(@user.id) In my view, I loop through @messages and print out each message, as such: <% for message in @messages %> <%= message.sender_id %> <%= message.created_at %> <%= message.body %> <% end %> This works flawlessly when there are several messages. The problem is that when I have one message, I get an error thrown at me: undefined methodeach'` How do I force rails to always return an array of messages even if there's only one message so that each always works? Thanks!

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• How do I get the "Install Missing Plugin" yellow bar to appear in firefox when flash is not installe

  - by Janak

  My rails website uses the open_flash_graph plugin to generate flash graphs for my clients. If a customer doesn't have flash installed, it doesn't display any messages, it simply doesn't show any graphs. I've noticed that if I go to other websites that need flash, I get a yellow bar at the top of my firefox window that offers to "Install Missing Plugin". I assume something in the HTML lets firefox know that this webpage needs flash. What code do I need to add to my website to make this work?

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• what in/out bound mail system to use ? hosted or not ?

  - by rick moss

  hi all I have a ruby / rails application that integrates in and outgoing email directly into the app. The app is going to be running on multiple domains each with posible many users sending and recieving email. I have looked into sendgrid, mailchimp and mad mimi as hosted services and also looked to create my own email server. There are advantages and disadvantages of both solutions and i am not sure which one to go down and am hoping someone can give me advice ?? Any help will be great. I know email is a hassle to manage but once set up correctly cant be that bad ?? Thanks in advance Rick

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