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  • Mysql question: is there something like IN ALL query?

    - by jaycode
    For example this query: SELECT `variants`.* FROM `variants` INNER JOIN `variant_attributes` ON variant_attributes.variant_id = variants.id WHERE (variant_attributes.id IN ('2','5')) And variant has_many variant_attributes What I actually want to do is to find which variant has BOTH variant attributes with ID = 2 and 5. Is this possible with MySQL? Bonus Question, is there a quick way to do this with Ruby on Rails, perhaps with SearchLogic?

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  • RVM: how can I dynamically export gem executable directory in my path?

    - by tommasop
    I installed rvm as root to setup an Ubuntu LTS 8.04 as a web hosting server for my rails apps. rvm is installed in: /usr/local/rvm Everything works fine, gems installation included and users are able to use ruby and gem commands. sudo gem install rails My problem is that the gems EXECUTABLE DIRECTORY is not included in my PATH and thus I cannot use rails command. Is there a way to dynamycally include gems executable directory in my PATH? Can it be done directly through rvm?

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  • Sort by ranking algorithm using will-paginate

    - by bearwithclaws
    I'm creating a digg-like site using Ruby on Rails that ranks the item (based on this algorithm). I'm using the will-paginate gem list the items in pages. The problem is, will-paginate only allows me to insert ':order =' based on the table data. I would like to make will-paginate to sort by a number which is calculated using a function based on different fields on the table (e.g number of votes, age hours). How can I do that?

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  • Getting can't modify frozen string when using string.insert

    - by Richard
    Hi, This is a quick question. I have the following ruby code, which works fine. def add_zeros number, zeros number = number.to_s zeros_to_add = zeros - number.length zeros_to_add.times do number = "0#{number}" end number end But if I replace number = "0#{number}" With number.insert(0, "0") Then I get TypeError: can't modify frozen string, does anyone know why this is?

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  • Error on rake command

    - by user332219
    Hi, Have you an idea about this error message when i run the rake db:migrate command under Aptana ? rake aborted! NoMethodError: undefined method `ord' for 0:Fixnum: SET SQL_AUTO_IS_NULL=0 Thanks Here My Config : Windows XP PRO SP2 Wamp 2.0 Aptana 2.0.4 RubyGems 1.3.5 Ruby 1.8.6

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  • Rails Script/generate error

    - by zeemy23
    I have ruby on rails installed on my ubuntu 8.10 desktop. Script/generate came up with this error. # script/generate undefined method `index' for #<Enumerator: "Rails Info:":each_line> any ideas? Thanks for you help, zeem

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  • "OR" Operator must be placed at end of previous line? (unexpected tOROP)

    - by akonsu
    I am running Ruby 1.9. This is a valid syntax: items = (data['DELETE'] || data['delete'] || data['GET'] || data['get'] || data['POST'] || data['post']) But this gives me an error: items = (data['DELETE'] || data['delete'] || data['GET'] || data['get'] || data['POST'] || data['post']) t.rb:8: syntax error, unexpected tOROP, expecting ')' || data['GET'] || data['get'] |... ^ Why?!

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  • Who use class variables in SOAP calls with Savon?

    - by Steffen Roller
    I'm writing a little client using Ruby and Savon. The interface changed significantly from version 0.7 to 0.8.x. All my calls don't work anymore :-(. How can I pass on a local member variable. Please see the example, @userName and @userPassword are not defined within the block. begin @response = @authentication_svc.request :wsdl, "AuthenticateUser" do http.headers["SOAPAction"] = "AuthenticateUser" soap.body = "#{@userName}#{@passwd}" end rescue Savon::SOAP::Fault = e @last_soap_error = e.message end

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  • why do I need the @ for setting variable value

    - by Saad
    I'm a little confused about scope of variables, in ruby I wrote a test program: class Test attr_reader :tester def initialize(data) @tester = data end def getData tester end end puts Test.new(11).getData now this works fine, the attr_reader, but my confusion is that since I've define attr_reader :tester then why can't I go tester = data rather then @tester = data, because when retrieving the data in getData I only have to write tester and not @tester

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  • How can unwanted tags be removed from HTML using Nokogiri?

    - by sutch
    I need to strip out all font tags from a document. When attempting to do so with the following Ruby code, other elements and text within the font tags are lost. I've also attempted to iterate through all children elements and make them siblings of the font tag before unlinking the font tag--which also results in lost HTML. What is a good method for removing tags which can contain other elements and/or text? doc.css('font').each do |element| element.unlink end

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  • How can a Rails newbie find a job as a Rails developer?

    - by esavard
    I'm a Ruby on Rails newbie. I'm learning Rails in my spare time (my day job is C++ developer) and I like it. I would like to be paid to do Rails development full-time instead of C++. How can I find a job in Rails when most job offering requires 2-5 years of Rails experience? What is the most effective strategy to get some credibility as a Rails Developer? Thanks in advance for your answers.

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  • how to restrict a web portal to a particular computer?

    - by ZX12R
    I am in the process of creating a Ruby on rails portal This portal requires a lot of data feeding by the site owner's back-office personnel. My client has this problem : the office staff should not be able to access the back office interface from any other than his office computers I have no idea how to achieve this. Is there a method for this? Thanks in advance.

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  • Regex to match javadoc style comments

    - by Anant
    I have files having content like /** * Some Content * @param .. * @author .. * */ function a_sample_function ( $args = '' ) { I need to extract the text Some Content @param .. @author .. given a function name a_sample_function ( the * can be removed by a gsub later I believe) I'm writing this in ruby.

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  • undefined local variable or method `user', using CarrierWave for profile images

    - by Amar H-V
    I've been following Ryan Bates' Railscasts tutorial on CarrierWave, which you can find here Everything works fine, except for when I go to view my profile, it gives me this error: undefined local variable or method `user' I don't know why it is telling me this, as I am using Devise for my authentication, and that is the name of my model. Below are some of the files which may be useful: https://gist.github.com/amarh21/7439421 I am using Rails 4.0.1 and ruby 2.0.0

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  • where to put the unittest for library in rails

    - by lidaobing
    Hello, I am a ruby and rails newbie. And I am working on a rails application with RadRails. RadRails has a "Switch to Test" function for my controller, model, etc. but not for my library. if I have class Foo::Bar in /lib/foo/bar.rb, where should I put the unittest for it? or should I separate the foo library in a separated project? Thanks.

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  • .NET Migrations Engine

    - by Karl Seguin
    I was once under the belief that Microsoft was working on an official, ruby-like, Migration framework. However, I haven't been able to find any additional information (or even the original source of my belief). Does anyone know any information about an official migration framework? or possibly an open source one?

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  • Integrating twitter pull request with another application

    - by jade
    i'm an absolute newbie to webapps, so please forgive if my question is quite naive or not upto the mark.i have been assigned a task to develop a web app which integrates the twitter pull request with another application using the particular application APIs.basically i dont know what it means.Can anyone explain what is intended to be done and if there is any example of such web apps if any,it will be most appreciated, so that i can get an idea of what is to be actually done.i'm planning to do this using ruby

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  • How to find out the exact RSS XML path of a website?

    - by Winston
    How do I get the exact feed.xml/rss.xml/atom.xml path of a website? For example, I supplied "http://www.example.com/news/today/this_is_a_news", but the rss is pointing to "http://www.example.com/rss/feed.xml", most modern browsers have this features already and I'm curious how did they get them. Can you cite an example code in ruby, python or bash?

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  • I want to learn a new language!

    - by Alex
    Hi, I'm a college student majoring in computer science. I know java and will be learning C++ the next couple years at school. I want to add another language to my repertoire and have gotten conflicting advice: Ruby, Python, Perl, JavaScript, PHP, AJAX, among others. I was wondering what everyone's opinions were on the relative value of each of these languages in the job market, the ease of learning of each of the languages, and just personal preferences when it comes to the languages mentioned above. Thanks!

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  • handling javaScript alerts when running a selenium test?

    - by Mo
    Hi I am am running some selenium tests(ruby) on my web page and as i enter an invalid characters in to a text box i have the JavaScript throw a alert like so if(isNaN($(this).val()) || Number($(this).val().valueOf() <=0)){ alert("Please Enter A Number"); } how can i handle this alert when its made and close the pop up? i tried to use the wait_for_pop_up() and close() but i think that's only for browser pop up's and not JavaScript alerts. any ideas? thanks

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  • JRuby-friendly method for parallel-testing Rails app

    - by Toby Hede
    I am looking for a system to parallelise a large suite of tests in a Ruby on Rails app (using rspec, cucumber) that works using JRuby. Cucumber is actually not too bad, but the full rSpec suite currently takes nearly 20 minutes to run. The systems I can find (hydra, parallel-test) look like they use forking, which isn't the ideal solution for the JRuby environment.

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