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  • suggestion box in ruby on rails

    - by ohana
    hi, anyone know how to create a suggestion box in ruby on rails? all the materials i found so far are about observe some text field and update some list in other , not related to suggestion box... Thanks!

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  • how to escape a string before insert or update in Ruby

    - by ywenbo
    Hi guy, In ruby ActiveRecord doesn't provide dynamic binding for update and insert sqls, of course i can use raw sql, but that need maintain connection, so i want to know if there is simpler way to escape update or insert sql before executing like code below: ActiveRecord::Base.connection.insert(sql) i think i can write code by gsub, but i know if there has been a ready method to do it. thank you very much, and Merry Christmas for you all.

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  • installing a ruby gem with a native extension

    - by ajstack
    I want to install a ruby gem which tries to build a native extension. The gem in this case is nokogiri. If I do gem install nokogiri, the native extension dynamically links against libxml, libxslt libs. I want to statically link against those libs. How should I go about this?

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  • Confused about NoMethodError in Ruby

    - by E L
    In a simple Ruby example, I'm getting an error that does not occur in irb. name = "Joe" def say_hi "\"Hi there!\" said #{self}" end response = name.say_hi puts response This code should return, "Hi there!" said Joe. It works perfectly fine in irb. However, when I attempt to put the same code in a file and run the file, I get this error: say_hi.rb:8:in `<main>': private method `say_hi' called for "Joe":String (NoMethodError) Any suggestion about why this happens?

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  • Logging a certain event only once in ruby

    - by Andrew Grimm
    Are there any logging frameworks in ruby that allow you to log a specific event type only once? logger = IdealLogger.new logger.log(:happy_path, "We reached the happy path") # => logs this message logger.log(:happy_path, "We reached the happy path yet again") # => Doesn't log this logger.log(:sad_path, "We've encountered a sad path!") # => logs this message Also, is there a term for the concept of logging a certain event type only once?

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  • Creating an Expando object in Ruby

    - by tyndall
    Is there a better way to write this Expando class? The way it is written does not work. I'm using Ruby 1.8.7 starting code quoted from https://gist.github.com/300462/3fdf51800768f2c7089a53726384350c890bc7c3 class Expando def method_missing(method_id, *arguments) if match = method_id.id2name.match(/(\w*)(\s*)(=)(\s*)(\.*)/) puts match[1].to_sym # think this was supposed to be commented self.class.class_eval{ attr_accessor match[1].to_sym } instance_variable_set("#{match[1]}", match[5]) else super.method_missing(method_id, *arguments) end end end person = Expando.new person.name = "Michael" person.surname = "Erasmus" person.age = 29

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  • Ruby character encoding issue

    - by Roland Soós
    Hi, I write a little ruby script, which sends me an email when a new commit added to our svn. I get the log with this code: log = `/usr/bin/svnlook log #{ARGV[0]}` When I run my script from bash I get good encoded character in the email, but when I try it and create a new commit I get wrong hungarian characters. I commited this: tes oéá I get this in the email: Log: tes ?\197?\145?\195?\169?\195?\161 How can I solve this issue?

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  • Ruby weird assignment behaviour

    - by jaycode
    Is this a ruby bug? target_url_to_edit = target_url if target_url_to_edit.include?("http://") target_url_to_edit["http://"] = "" end logger.debug "target url is now #{target_url}" This returns target_url without http://

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  • Execute ruby code in a link in Haml

    - by thermans
    I want to have a "delete user" link in a normal Activerecord table, but I can't figure out how to wrangle the inline ruby in haml. I have this: %tbody - @users.each do |user| %tr %td= user.name %td= user.login %td %a %img{:src => '../images/delete.png', :title => 'Delete user'} How do I make the - user.destroy be a clickable link in Haml?

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  • Count the number of lines in a file with Ruby, without reading entire file into memory

    - by smnirven
    I'm processing huge data files (millions of lines each). Before I start processing I'd like to get a count of the number of lines in the file, so I can then indicate how far along the processing is. I am using Ruby, and because of the size of the files, it would not be practical to read the entire file into memory just to count how many lines there are. Does anyone have a good suggestion on how to do this?

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  • Way to partialy match a Ruby string using Regexp

    - by Fabiano PS
    I'm working on 2 cases: assume I have those var: a = "hello" b = "hello-SP" b = "not_hello" 1 - Any partial matches I want to accept any string that has the var a inside, so b and c would match. 2 - Patterned match I want to match a string that has a inside, followed by '-', so b would match, c does not. I am having problem, because I always used the syntax /expression/ to define Regexp, so how dinamicaly define an RegExp on Ruby??

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  • Checking deployed port in ruby on rails application

    - by john chan
    Is there an elegant way to check which port you deployed a ruby on rails application using mongrel? I could not find a directive (i.e. such as #{RAILS_ROOT} which contains the root directory of the application) that I can use to perform a check. I need this to do a check since I am deploying the same application on different ports and I need the app to do different things according to the port that is being accessed. Any help would be appreciated, Thanks

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  • Connect to MySQL in Ruby using NetBeans

    - by Varun
    I've downloaded the "dbd-mysql-0.4.4.zip" and linked it to my project. While I try to run a demo code from NetBeans the very first line require "dbi" gives me an error. Is there a different way to do it? I also tried jruby setup.rb config --with=dbi,dbd_mysql from the command prompt and it gave me the following error: config: unknown option --with=dbi,dbd_mysql Try 'ruby setup.rb --help' for detailed usage. Any suggestions please?

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  • Ruby: Alter class static method in a code block

    - by Phuong Nguy?n
    Given the Thread class with it current method. Now inside a test, I want to do this: def test_alter_current_thread Thread.current = a_stubbed_method # do something that involve the work of Thread.current Thread.current = default_thread_current end Basically, I want to alter the method of a class inside a test method and recover it after that. I know it sound complex for another language, like Java & C# (in Java, only powerful mock framework can do it). But it's ruby and I hope such nasty stuff would be available

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  • url validation in ruby on rails

    - by jpallavi
    1)Url field should also accept url as “www.abc.com”. If user enters url like this, it should be automatically appended with “http://” resulting in value saved in database as “http://www.abc.com”. If user enters url as “http://www.xyz.com” system should not append “http://”. User should be able to save url with “https://”. what is the code for it in ruby on rails?

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