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• Ruby script as service

  - by mplacona

  Well, the title say it all. I have a ruby script I want running as a service (one I can start and stop) on my Linux box. I was able to find how to do it on Windows here Some readings point to creating daemons or cron tasks. I just need something simple I can call on my box's reboot, and can stop/start whenever I please. my script has an internal sleep call, and runs in "eternal loop" thanks in advance

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• autosave options in ruby on rails

  - by fregas

  is there a way to turn OFF autosave in rails? I dont' want modifications to an association to automatically save to the database UNTIL i call save on the parent object. some_parent.some_children << child #should not save, just adds to the association! some_parent.save #now parent and children are saved! It this possible or am i barking up the wrong tree?

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• 256 color terminal library for Ruby?

  - by brianegge

  Is there a gem like 'Term::ANSIColor' which works with 256 color terminals? The perl script 256colors2.pl works great in my terminal, and I'd like to use some of these colors in my ruby scripts without manually inserting the ANSI codes.

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• Using ruby's OptionParser to parse sub-commands

  - by rampion

  I'd like to be able to use ruby's OptionParser to parse sub-commands of the form COMMAND [GLOBAL FLAGS] [SUB-COMMAND [SUB-COMMAND FLAGS]] like: git branch -a gem list foo I know I could switch to a different option parser library (like Trollop), but I'm interested in learning how to do this from within OptionParser, since I'd like to learn the library better. Any tips?

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• ruby on rails - ultrasphinx

  - by satya

  Ruby on Rails - UltraSphinx Hi guys, I'm using Ultrasphinx for the search thing. My question is : I have the "rake ultrasphinx:daemon:start" running in the background. Now, should I have a cron job that does "rake ultrasphinx:index" regularly or will the daemon take care of indexing whenever a new object is created. Please, let me know. Its kind of emergency. Thanks

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• Ruby SerialPorts

  - by Seth Archer

  I'm using the ruby serial port gem. After I open up the port I send the data I want like this. sp.write [200.chr, 30.chr, 7.chr, 5.chr, 1.chr, 2.chr, 0.chr, 245.chr].to_s It doesn't work, but if I put it in a loop of around 200 times: 200.times do sp.write [200.chr, 30.chr, 7.chr, 5.chr, 1.chr, 2.chr, 0.chr, 245.chr].to_s end It works. Any ideas on why this is happening?

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• XMLRPC with long integer entry in hashMap from java server is not obtained in ruby client

  - by Mahesh M

  I am using XMLRPC to get data from a Java server. I use HashMap as return value for a particular remote call. The server puts a long int into the HashMap (which is returned) along with other data. At the client end, which is ruby, I get all other data but for the long int. How can I get this data at the client?

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• Ruby on Rails AJAX file upload

  - by Darth

  Is there any easy way how to handle AJAX file upload in Rails? e.g. with a plugin

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• How to know when an instance variable gets set in Ruby

  - by Brian Genisio

  Is there any way to override the setting of instance variables in Ruby? Lets say I set an instance variable: @foo = "bar" Can I intercept that and do something (like record it or puts, for instance)

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• Ruby SOAP::RPC::Driver seeing the generated soap request

  - by ssmithstone

  I'm using ruby's WSDLFactory to create an rpc driver to access the paypoint soap service and i need to see what xml request is being generated is there a way to do this code or should i try and use something like ethereal

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• How should I use https in Ruby on Rails

  - by Daniel Cukier

  I'm developing an application in Rails (2.3.4) and there are some parts that need to run over a secure protocol, for example, the login form, the credit card form, etc. How can I do just these pages be https, and all other pages remain http? How can I test ssl in development environment?

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• Ruby on Rails - jrails not site wide

  - by Hamish

  Is it possible to configure jrails so that it only replaces the ruby on rails helper methods for some parts of the site? I am currently in a project where we are doing a staggered migration to jQuery so the site wide choice is not an option in this case.

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• Why Ruby on Rails uses default Prototype?

  - by Anry

  I just recently started learning RoR. In Rails by default available Prototype. Why uses it is this library? Why is not jQuery, Dojo, Mootools, ExtJS ...

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• ruby write newline character to file but do not interpret as a true newline

  - by thomas

  I am trying to write a ruby string to a file in such a way that any newline characters embedded in the string remain embedded. This is being written out to a file which will then be processed by another tool. An example is below. I want this: 1 [label="this is a\ntest"] \n (second \n is a true newline) I have tried this: string = '1 [label="this is a\ntest"]' + "\n" Any thoughts?

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• Using ASP.NET c# with Sketchup Ruby Extension

  - by Tad Carter

  I'm an ASP.NET c# developer using VS2010 as my development platform. I am interested in accessing Sketchup models using a web form interface. Has anyone done this? I am looking for a simple "Hellow World" web application that uses the Ruby Extension model.

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• Getting output of system() calls in ruby

  - by Macha

  If I call a command using system() in ruby, how do I get it's output? e.g. system("ls")

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• Ruby program with the largest ratio of output length to program length

  - by Horace Loeb

  The program print "hi" contains 10 characters and outputs a string with length 2. Therefore its ratio of output length to program length is 2/10. My question is what Ruby program has the largest output length to program length ratio (For program length let's only count non-whitespace characters (i.e., it's easy to minify a program))

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• Making Environment Changes Stick in Ruby Scripting

  - by yar

  Here is my script #!/usr/bin/env ruby if __FILE__ == $0 `cd ..` end which runs fine, but when it exits, I'm back where I started. How can I "export" the changes I've made to the environment?

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• Hibernate CRUD à la Ruby on Rails' Scaffolding

  - by schonarth

  Guys, Do you know of any tool that would do like Ruby on Rails' Scaffolding (create simple CRUD pages for any particular class to allow quickly populating a database with dummy data), only which used Java classes with Hibernate for database access, and JSP/JSF for the pages? It is a drag when you are programming one part of an application, but need data that can only be added with another part that is not ready yet, or very cumbersomely by directly inserting it into the DB.

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• Running Java, Python, Ruby and Perl programs in .NET

  - by Arjun Vasudevan

  I've .NET framework 3.5 installed in my laptop. Just .NET alone, no Visual Studio. How can I run Java, Python, Ruby and Perl programs from the console? What are the commands used for running them? Do I need to install something else also, for running these language files?

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• remainder application in ruby

  - by nani

  i want to send develop a web app in ruby on rails . which wil send the remainder to the mail and mobile tooo . can some body help me out thanks in advance

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• accept_nested_attributes_for in Rails 2.3.5 and Ruby 1.9.1

  - by jaycode

  Has accept_nested_attributes_for already works with Rails 2.3.5 and Ruby 1.9.1???? I keep getting this error undefined method accept_nested_attributes_for' for #<Class:0x00000108da2140>

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• Ruby: opening files relative to home directory

  - by Peter

  In Ruby, the following fails with Errno::ENOENT: No such file or directory, even if the file exists: open('~/some_file') However, you can do this: open(File.expand_path('~/some_file')) Two questions: Why doesn't open process the tilde as pointing to the home directory? Is there a slicker way than using File.expand_path?

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• Parsing a UTF-16 encoded xml file in ruby

  - by Matthew Toohey

  Hello I've been trying to parse a UTF-16 encoded xml file in Ruby (1.8.7), and I can't seem to find how to do it by searching (google and stack overflow) Here's the xml file url: http://www.abc.net.au/triplej/feeds/playout/triplejsydneyplayout.xml?_5366 Getting the xml string from Net::HTTP and passing it to REXML, then calling logger.info xmlDoc.inspect produces: <UNDEFINED> ... </> Any ideas? Cheers

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• Error in rounding off values using .round in Ruby

  - by Shreyas Satish

  The following piece of code works perfectly in script/console but returns the following error when i compile the same in a ruby script.: :in `round': wrong number of arguments (1 for 0) (ArgumentError) tf={"ph"={0=1.33333333333333, 1=1.5}, "fee"={0=1.66666666666667}, "test"={0=1.16666666666667, 1=1.25}, "what"={0=2.0, 1=2.0}, "for"={0=1.5}, "is"={0=1.83333333333333, 1=1.75}} tf.each{|k,v| v.each{|k1,v1| tf[k][k1]=(v1.round(5))}} Any Ideas ? Cheers !

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