How do you use ARel's #as method?
If you build a projection like this: t = Arel::Table.new(:projects) ps = t.project(t[:id].as(:snark)) How do you get the result column that's named :snark? ...
ruby
Where are some current Ruby & RoR resources?
Hello, I've been a PHP Developer for a few years now and I've recently been interested in learning Ruby & Rails but I've found a lot of the resources I've found seem to be dated and not for Rails 2.0 or Ruby 1.8.6 etc... can anyone point me in the right direction? I'm running OSX 10.6 with the default ruby & rails installation. Thanks!...
Convert non-breaking spaces to spaces in Ruby
I have cases where user-entered data from an html textarea or input is sometimes sent with \u00a0 (non-breaking spaces) instead of spaces when encoded as utf-8 json. I believe that to be a bug in Firefox, as I know that the user isn't intentionally putting in non-breaking spaces instead of spaces. There are also two bugs in Ruby, one o...
Library to parse ERB files
I am attempting to parse, not evaluate, rails ERB files in a Hpricot/Nokogiri type manner. The files I am attempting to parse contain HTML fragments intermixed with dynamic content generated using ERB (standard rails view files) I am looking for a library that will not only parse the surrounding content, much the way that Hpricot or No...
How to define a constant when running script/server?
I want to start up my Rails development server like this: script/server OFFLINE_MODE=1 and have a method in application_controller.rb that checks for the presence of that constant: helper_method :offline_mode? def offline_mode? defined?(OFFLINE_MODE) ? true : false end so I can hide stuff in my app when I'm coding without access ...
Mocking Sort With Mocha
How can I mock an array's sort expect a lambda expression? This is a trivial example of my problem: # initializing the data l = lambda { |a,b| a <=> b } array = [ 1, 2, 3, 4, 5 ] sorted_array = [ 2, 3, 8, 9, 1] # I expect that sort will be called using the lambda as a parameter array.expects(:sort).with( l ).returns( sorted_array ) #...
Execute code once Sinatra server is running
I have a Sinatra Application enclosed in Sinatra::Base and I'd like to run some code once the server has started, how should I go about doing this? Here's an example: require 'sinatra' require 'launchy' class MyServer < Sinatra::Base get '/' do "My server" end # This is the bit I'm not sure how to do after_server_running ...
Blogs similar to Err The Blog
What's a dev blog that continues the innovative quality of PJ Hyett's and Chris Wanstrath's discontinued Err The Blog? Ruby or otherwise. http://errtheblog.com/ ...
Digitally sign email in ruby with S/MIME
Is there a ruby way to digitally sign email messages via S/MIME? Our group uses PKI and our users are conditioned to expect digital signatures for important messages. I know I can invoke the openssl command line tool: openssl smime -sign -signer $CERT_FILE -passin pass:$CERT_PASS -in $UNSIGNED_MAIL -out $SIGNED_MAIL -certfile $CERT_...
In Ruby language, how can I get the number of lines in a string?
Hi guys, In Ruby language, how can I get the number of lines in a string? ...
Ruby Abstract Class Design
I'm creating a video game. It has Characters & Items. Since I want Characters & Items to each have a name, should I make another class called NamedObjects with just a name field and have Characters & Items extend that? Or is that going overboard? ...
Is reading xml simple in rails or converting it to hash will be simpler?
Hi All, Sorry for this question but after spending 1-2 hours on how to read xml, i thought posting it on forum will be better. So i get a complex (very large)xml response from the plugin trackify. i want to read some values from it so i convert it into hash and then read it as follows For ex:- to read city @tracking_info['TrackResponse...
Is Screen-scraping a windows application with ruby possible?
I want to scrape text data from a windows application to do additional processing using existing ruby code. Would it be possible to scrape the data as it is updated in the windows application using Ruby and where do I start? ...
Call a block method on an iterator: each.magic.collect { ... }
I have a class with a custom each-method: class CurseArray < Array def each_safe each do |element| unless element =~ /bad/ yield element end end end end And want to call different block methods, like "collect" or "inject" on those iterated elements. For example: curse_a...
How to uninstall Ruby from /usr/local?
Everything was working fine , until we decided to upgrade ruby to 1.8.7 from 1.8.6, and thats when all hell broke loose. When we compiled Ruby 1.8.7 from source it got installed into /usr/local/bin and Ruby 1.8.6 stayed in /usr/bin. Currently, we've uninstalled ruby 1.8.6 and by some stroke we deleted the ruby 1.8.7 files from /usr/loca...
Error in connection in ruby.
require 'rubygems' require 'mysql' db = Mysql.connect('localhost', 'root', '', 'mohit') //db.rb:4: undefined method `connect' for Mysql:Class (NoMethodError) //undefined method `real_connect' for Mysql:Class (NoMethodError) db.query("CREATE TABLE people ( id integer primary key, name varchar(50), age integer)") db.query("INSERT INTO peop...
Extracting URLs (to array) in Ruby
Good afternoon, I'm learning about using RegEx's in Ruby, and have hit a point where I need some assistance. I am trying to extract 0 to many URLs from a string. This is the code I'm using: sStrings = ["hello world: http://www.google.com", "There is only one url in this string http://yahoo.com . Did you get that?", "The first URL in t...
Invoking external shell application through RubyCocoa
Hi, How would I invoke an external application through the RubyCocoa bridge? I read something about NSTask, yet I have no idea how this should be translated in RubyCocoa. My goal is to have an IB_action to trigger a method which will run a terminal application with some parameters, i.e. ls -p $mydir, where mydir comes from an IB_outlet ...
Rails, use the content of file in the controller
Hi, I've a file in the config directory, let's say my_policy.txt. I want to use the content of that file in my controller like a simple string. @policy = #content of /config/my_policy.txt How to achieve that goal, does Rails provide its own way to do that? Thanks ...
How to set default cookie domain in Rails3
I want to set default cookie domain for my application to ".mydomain.com" to allow cookie session be preserved across subdomains. There are many places showing how to do it in Rails 2.x but these solutions doesn't work for Rails3. Anyone know how can I set it? ...