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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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  • nginx + passenger not using rackup file

    - by Callum Jones
    I have an issue where Passenger is not detecting the config.ru file for the following nginx server server { listen 80; passenger_enabled on; server_name callumj.com cjlondon.com; access_log logs/callumj.access.log; root /webapps/callumj_com/public; } Nginx just seems to ignore it and treat it as a normal web page (as I get forbidden areas when it tries to look for index.html in public). I have verified that the rackup command and execute config.ru and it boots up sucessfully. I have another server directive much like this which is powered by Rails and it seems to be working perfectly. Am I missing something? Thanks in advance!

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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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  • Only run selenium test if previous selenium test fails

    - by Mike Grace
    I have several 'it' blocks in my selenium test file (using Ruby and rspec) that test various portions of my web application. Each 'it' block stops executing and goes to the next 'it' block if any of the conditions or code fails. Is there a way to run an 'it' block only if the previous fails or call a function to react to the failed test? Is there a better way to accomplish what I am wanting to do that doesn't involve an 'it' block? Example 'it' block it "should load example.com" do page.open("http://example.com") page.wait_for_page_to_load(25) end

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  • Testing across multiple sessions in merb using webrat

    - by m7d
    I want to test across multiple sessions using webrat in merb. Apparently, this is fairly easy to accomodate in Rails via: http://erikonrails.snowedin.net/?p=159. Following the same logic, I am trying to do something that follows that pattern for merb and webrat. Here is an attempt (which does not work because MerbAdapter does not respond to visit and other webrat session methods; I don't want to take too much more time with this so I have stopped here for now): # defined in test.rb environment file module Merb #:nodoc: module Test #:nodoc: module RequestHelper #:nodoc: def in_a_separate_session old = @_webrat_session.response.clone @_webrat_session = Webrat::MerbAdapter.new yield @_webrat_session.response = old end end end end I tried a few other ideas, but obviously I am missing something. Anyone else know how this would be done in merb? I think I could specify a cookie jar using the request mock, but I prefer to do this with webrat.

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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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  • regex to match trailing whitespace, but not lines which are entirely whitespace (indent placeholders

    - by Tim
    I've been trying to construct a ruby regex which matches trailing spaces - but not indentation placeholders - so I can gsub them out. I had this /\b[\t ]+$/ and it was working a treat until I realised it only works when the line ends are [a-zA-Z]. :-( So I evolved it into this /(?!^[\t ]+)[\t ]+$/ and it seems like it's getting better, but it still doesn't work properly. I've spent hours trying to get this to work to no avail. Please help. Here's some text test so it's easy to throw into Rubular, but the indent lines are getting stripped so it'll need a few spaces and/or tabs. Once lines 3 & 4 have spaces back in, it shouldn't match on lines 3-5, 7, 9. some test test some test test some other test (text) some other test (text) likely here{ dfdf } likely here{ dfdf } and this ; and this ; Alternatively, is there an simpler / more elegant way to do this?

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  • Tracking fitness in a genetic algorithm

    - by Chuck Vose
    I'm still hacking on my old ruby for the undead post (I know, I know, stop trying to bring the post back from the dead Chuck). But the code has gotten a little out of hand and now I'm working on a genetic algorithm to create the ultimate battle of living and dead with the fitness being how long the battle lasts. So, I've got the basics of it down; how to adjust attributes of the game and how to acquire the fitness of a solution, what I can't figure out is how to store the fitness so that I know when I've tried a combination before. I've not been able to find much genetic code to look at let alone code that I can read well enough to tell what's going on. Does anyone have an idea how this is normally done or just simply an algorithm that could help point me in the right direction?

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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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  • 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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  • 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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  • Yahoo authentication

    - by steve
    Hi - I'm playing around with the new yahoo API. I'd like to scrap some dummy data using the following address http://query.yahooapis.com/v1/public/yql?q=desc%20social.updates.search&format=json&diagnostics=true&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys&callback=cbfunc When I run this I get an authenticaion error (Need to be logged into Yahoo) This is fine obviously for me messing around on the internet. However I'd like to call this from a ruby script. Any ideas how I go about authenticating? I can only seem to find some web enabled version.

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  • Web framework for an application utilizing existing database?

    - by tputkonen
    A legacy web application written using PHP and utilizing MySql database needs to be rewritten completely. However, the existing database structure must not be changed at all. I'm looking for suggestions on which framework would be most suitable for this task? Language candidates are Python, PHP, Ruby and Java. According to many sources it might be challenging to utilize rails effectively with existing database. Also I have not found a way to automatically generate models out of the database. With Django it's very easy to generate models automatically. However I'd appreciate first hand experience on its suitability to work with legacy DBs. Also I appreciate suggestions of other frameworks worth considering.

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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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  • render_to_string from a rake task

    - by Horace Loeb
    I want to use a Rake task to cache my sitemap so that requests for sitemap.xml won't take forever. Here's what I have so far: @posts = Post.all sitemap = render_to_string :template => 'sitemap/sitemap', :locals => {:posts => @posts}, :layout => false Rails.cache.write('sitemap', sitemap) But when I try to run this, I get an error: undefined local variable or method `headers' for #<Object:0x100177298> How can I render a template to a string from within Rake?

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  • Updating RubyGems alongside an existing packaged installation on Joyent

    - by Matt
    On a Joyent accelerator I'm working with, Ruby and Rubygems were installed when the server was initially setup using Cool Stack. The existing version of Rubygems is version 0.9.2. When it comes to upgrading RubyGems using the 'sudo gem install rubygems-update' and 'sudo update_rubygems' commands, it results in the following error: ./lib/rubygems.rb:124: uninitialized constant Gem::RbConfig (NameError) from setup.rb:24:in `require' from setup.rb:24 Without having much success in rectifying this issue, I wanted to install a fresh version of RubyGems alongside this one. As this is a production server, I want to minimize the amount of environment changes I make on the server. If I install a fresh version of RubyGems from source, how do I set this new installed version of RubyGems as the default version of RubyGems to use?

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  • Type attribute for text_field

    - by Koning Baard XIV
    I have this code: <%= f.text_field :email, :type => "email", :placeholder => "[email protected]" %> So people can enter their email on an iPhone with the email keyboard instead of the ASCII keyboard. However, the output is: <input id="user_email" name="user[email]" placeholder="[email protected]" size="30" type="text" /> which should be: <input id="user_email" name="user[email]" placeholder="[email protected]" size="30" type="email" /> Is there a way to force Rails to use the email type instead of text, or must I use HTML directly? Thanks

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  • Is it possible to filter by conditions before paginating?

    - by Brian Roisentul
    I'm using ruby on rails 2.3.8 and will_paginate plugin. I've just noticed that if I write something like this: Announcement.paginate :page => params[:page], :per_page => 10, :conditions => some_condition it will work. But, if I write something like this: announcements = Announcement.all :conditions => some_condition @ann = announcements.paginate :page => params[:page], :per_page => 10 it won't recognize conditions. Maybe you're wondering "why would he want to do that?", well, it's a long story and I really need to first filter the conditions and then paginate the results.

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  • Datamapper has n relationship with multiple keys

    - by jing
    I am working on a simple relationship with DataMapper, a ruby webapp to track games. A game belongs_to 4 players, and each player can have many games. When I call player.games.size, I seem to be getting back a result of 0, for players that I know have games associated with them. I am currently able to pull the player associations off of game, but can't figure out why player.games is empty. Do I need to define a parent_key on the has n association, or is there something else I'm missing? class Game belongs_to :t1_p1, :class_name => 'Player', :child_key => [:player1_id] belongs_to :t1_p2, :class_name => 'Player', :child_key => [:player2_id] belongs_to :t2_p1, :class_name => 'Player', :child_key => [:player3_id] belongs_to :t2_p2, :class_name => 'Player', :child_key => [:player4_id] ... end class Player has n, :games ... end

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  • How to the view count of a question in momery?

    - by Freewind
    My website is like stackoverflow, there are many questions. I want to record how many times a question has been visited. I have a column called "view_count" in the question table to save it. When a user visited a question many times, the view_count should be increased only 1. So I have to record which user has visited which question, and I think it is too much expensive to save them in the database, because the records will be huge. So I want to keep them in the memory, and persistent the number to database every 10 minutes. I have searched about "cache" of rails, but I haven't found an example. I need an simple sample of how to do this, thanks for help~

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  • How to get image capture date and video duration when uploading files using SWFUpload and Paperclip

    - by Hatem
    Hi Guys, I'm using SWFUpload and Paperclip on Rails 2.3.5 to upload images and videos. How can I store the capture date of images and duration of videos? The following works correctly in irb: irb(main):001:0> File.new('hatem.jpg').mtime => Tue Mar 09 16:56:38 +0200 2010 But when I try to use Paperclip's before_post_process: before_post_process :get_file_info def get_file_info puts File.new(self.media.to_file.path).mtime # =>Wed Apr 14 18:36:22 +0200 2010 end I get the current date instead of the capture date. How can I fix this? Also, how can I get the video duration and store it with the model? Thank you.

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  • Showing all a Gem's build flags

    - by Rob
    This is more a curiosity than necessity question. I've just installed nokogiri again with RubyGems and it is saying "WARNING: Nokogiri was built against LibXML version 2.7.5, but has dynamically loaded 2.7.6" This is easy enough to fix, but it lead to a more general question: how do I see all the configuration options for a rubygem before installing it? I found the easiest way I know how is to visit the gem folder an run "ruby nokogiri-0.0.0/ext/nokogiri/extconf.rb -h" and that shows me it, but there has to be an easier way, right? I was expecting some kind of "sudo gem install nokogiri -- --help" command that would show the build flags. I've searched around a bit but didn't see anything, anybody know how to do this before I go digging into RG's source :)?

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  • What technologies should I focus on to work as a developer in Japan?

    - by Atomiton
    I'm thinking of one day moving to Japan and I was wondering if anyone here has any experience working there. I'm curious as to what languages/technology are popular there for web development and software development. I have heard Ruby is/was strong there due to its founder being Japanese. What would you recommend someone focus on if they wanted to work as a developer in Japan? I have heard Microsoft has a strong base in Japan, but my guess is that whatever platform has supported unicode or Shift-JIS the best would be the strongest.

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