I have a link_to like this: <%= link_to 'X', category, :confirm => 'Are you sure?', :method => :delete %> So, I change it like this: <%=link_to_remote category.name, :confirm => 'Are you sure?', :method => :delete%> it show the confirm box, but after I click "yes", it won't delete the item I want , why? ...
Hello, I struggle to have gems correctly loading in a Snow Leopard environment. I installed ruby and rubygems in '/usr/local' (from http://hivelogic.com/articles/compiling-ruby-rubygems-and-rails-on-snow-leopard/ instructions), I installed some gems with 'gem install gem-name'. I correctly see the gem list: $ gem list *** LOCAL GEMS ...
How to write a piece of code to compare some versions strings and get the newest? For example strings like: 0.1 0.2.1 0.44 ...
I'm pretty bad with regex... well I'm learning that is :) I have the following line (which needs a regex guru's help): 'passenger (2.2.5, 2.0.6)'.match(//)[0] which obviously doesn't match anything yet I want to return the just the content of (2.2.5, so everything after the open parentheses and before the comma... how would I do th...
I'm wondering to what extent I can use associations in Rails. Take into consideration the following: class User < ActiveRecord::Base has_one :provider has_many :businesses, :through => :provider end class Provider < ActiveRecord::Base has_many :businesses has_many :bids, :through => :businesses belongs_to :user end ...
I know you can pass methods the values of which you want to be available to json objects like so: # user.rb def name first_name + last_name end # some controller render :json => @user.to_json(:methods => :name) But if I want to massage the value returned from the method a bit (with a text helper say) is there a way to do that? I g...
I need to convert an array of integers to a little endian bitmask using Ruby. Any links or hints would be appreciated. the example says [2,7,9,11] => "4205" a = [2,7,9,11] # 4205 b = [1,2,3,4] # 0F00 def array_to_mask(arr) mask = 0 arr.each do |i| mask = mask | (1 << i) end return mask.to_s(16) end p array_to_mask(a) # a84 ...
i discovered a problem when cron tries to run a ruby script which uses some library. require "library" #do some stuff it complains about not being able to find library.rb so i was wondering if i could do something like require "/var/dir/library.rb" ...
Trying to install rubyOSA on my iMac sudo gem install rubyosa I get the following error: ERROR: Error installing rubyosa: ERROR: Failed to build gem native extension. /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framewo...
I have my <%= will_paginate %> code block in the layout of my application. I'd like to pass this block different collections depending on what controller/action I'm in. How can I do this? ...
I posted this to the Cucumber group with no replies, which makes me wonder if this is actually a cucumber issue or not. I'm pretty new to cucumber, and there are a number of things I really don't quite understand about how the cucumber environment is set up and executed within the test environment. I have a REST API rails app I'm testin...
I want to have a site that is a simple blog so I created a model: class Post < ActiveRecord::Base attr_accessible :title, :body end I want to use Markdown but without HTML tags. I also want always to keep database clean and my idea is to use before_save()/before_update() callbacks to sanitise my input and escape HTML. I do...
I have a ruby script I've written using Gruff to produce graphs. These are simple bar charts, and they've worked fine many times. Now, for one particular set of points I'm getting c:/ruby/lib/ruby/gems/1.8/gems/gruff-0.3.6/lib/gruff/line.rb:109:in draw': Non-conforming drawing primitive definitionInf' @ draw.c/DrawImage/3140 (Magick::...
Given this code: has_many :foos, :finder_sql = <<-SQL select * from foos where bars = #{id} SQL The #{id} part is being prematurely interpolated. How do I escape it? Thanks. ...
I'm using the Ruby mysql module. I want to print out the results of a query and include the column names. I'm having trouble finding the method to give me an array of these names. I have the values as shown below. result = my.query("select * from foo") result.each do |row| puts row.join(',') end Thanks for the help! ...
paginate :per_page => per_page, :page => page, :include => [{:stores => :locations}, :categories, :kosher], :origin => origin, :conditions => ["products.name LIKE ? #{conditions}", "%#{search}%"], :within => distance, :order => sort_order I am using ruby 1.9.1p243 with Rails 2.3.5 on OSX and this cod...
Is there any way to pass Ruby objects to a C++ application ? I have never done that kind of thing before and was wondering if that would be possible. Would it require to modify the Ruby core code ? ...
I am the intrepid little programmer that could. I began programming rails five weeks ago and I have been stuck on the same error for that entire time. It goes like this. I have mysql application installed, have the latest rails (2.3.5), ruby (1.8.6), and mysql (5.1.40). I created a perfectly beautiful database and table with content in ...
Hi, I'm looking for a good book on Ruby which has interesting problems with each chapter that help grasp the fundamental concepts in a good way - something similar to Thinking in Java or Problems in General Physics by IE Irodov. Any suggestions? ...
While writing a test with a value that gets represented as a BigDecimal, I ran into something weird and decided to dig into it. In brief, '0.00009' when rounded to two decimal places is returned as 0.01 instead of 0.00. Really. Here's my script/console capture: >> bp = BigDecimal('0.09') => #<BigDecimal:210fe08,'0.9E-1',4(8)> >> bp.ro...