I'm looking for advice on how best to construct a "watch-list" for the app I'm currently working on. Models as follows: # user.rb has_many :items # item.rb belongs_to :user I need to now add a watch-list, where users can favorite certain items, without taking ownership. I've tried the following: # user.rb has_many :items has_many ...
I want to spec a Sinatra server that receives HTTP requests, stores things in MongoDB, and responds with JSON. How would I spec both the MongoDB entries and the responses? I'd like to use Cucmber and RSpec to do this cause I hear they're hot, but I'm not really good with them yet. Thanks! Matt ...
I've worked through some of the Sinatra and Rails samples, but I'm having a hard time figuring out which features belong to which technology. What specifically do I gain by using Sinatra/Rails? Is it just ActionPack/ActionView? Correct me if I'm wrong, but I COULD just use Webrick/Mongrel and serve up my .erb files right? And I could us...
Is it possible to detect the last character of string in ruby on rails and replace it by "". Explanation :: Suppose I have string as "demo-" then i have to check its last character, If it is "-" then replace it by "", otherwise no action should be taken. Example - Code :: search_text.downcase! if !search_text.nil? now if seach_text h...
Ok, so am using the Twitter gem version 0.9.12 and I have successfully figured out how to do the OAuth dance and get the users access token and access secret that I can store securely in the database to send tweets on the users behalf from my rails app. The problem I am having is that I want to display a message to the user in their ac...
I'm trying to create a set of instances that have different instance names using instance_variable_set to change the instance name and I can't seem to get it to work. for i in 0..3 do username_str = String.new username_str = 'user_' + i.to_s username_new = User.new username_new.instance_variable_set("@#{WHAT_DO_I_PUT...
class User < ActiveRecord::Base validates_each :name, :email do |model, attr, value| if value =~ /groucho|harpo|chico/i model.errors.add(attr, "You can't be serious, #{value}") end end end Confused as to how this works. Is :name, email the items it will loop? ...
I've been successfully reading the Linux file '/proc/self/mounts' from within a Ruby thread using stock Ruby in Ubuntu Lucid (ruby 1.8.7 (2010-01-10 patchlevel 249) [x86_64-linux]). Now I'm trying to do the same on Red Hat 5.5 (ruby 1.8.6 (2010-02-05 patchlevel 399) [x86_64-linux]), but the thread won't complete. I wrote a testing script...
Hi, I want to build a wizard like multi-step input form for my model. I want to stick to rest practices as long as possible. The individual steps in the wizard don't have much inter-dependency so to avoid the round trip to the server, I want to store the whole data on client side using JQueryUI tabs or similar. I have following ques...
I'm familiar with using Ajax templates to update particular parts of a page, but how do you render with layout when doing so? For example, given a layout: #foo = yield :foo a simple view "show.html.haml": = render @bar and a partial: - content_for :foo = bar.to_html ... the HTML result would render within the layout and I'd...
I have a two line script that works nicely in ruby. I moved it to haml and getting the error NameError at / uninitialized constant Tilt::CompileSite::Nokogiri the haml code: %td - @doc = Nokogiri::XML(File.open(file)) = @doc.xpath("//testsuite").each_with_index {|node,index| "#{index+1}. #{node.attributes["name"]...
I'm trying to add some Markdown styling to my Rails 3 blog application. This should be something simple, but I can't get it to work. I have kramdown in my Gemfile: gem 'kramdown' I ran bundle install. I have an application helper called kramdown module ApplicationHelper def kramdown(text) require 'kramdown' return Kramdown...
Consider the following string which is a C fragment in a file: strcat(errbuf,errbuftemp); I want to replace errbuf (but not errbuftemp) with the prefix G-> plus errbuf. To do that successfully, I check the character after and the character before errbuf to see if it's in a list of approved characters and then I perform the replace. ...
I'm on a Mac running 10.6.4 Snow Leopard, and apparently ruby comes ready to go. But I'm new to Ruby, trying to learn the Rails framework, and so i decided to install the latest version 1.9.2. I followed the instructions here, but after I compile and install, when I run ruby -v I'm still getting 1.8.7. Anyone can help a noob out? Whe...
Hi. I don't need to crawl the whole internet, I just need to open a few URL, extract other URL, and then save some page in a way that they can be browsed on the disk later. What library would be appropriate to program that? ...
some case I don't want execute before_update. please help me. case A: in case I want used before_update obj = Object.find(id) obj.save but case B I don't want used before_update obj = Object.find(id) obj.save # in case I want used before_update ...
In Ruby, isn't an instance variable like @foo and a class variable, @@bar? In some code, I see a few self.user_name = @name or even a += 1 if name != user_name # this time, without the "self." # and it is the first line of a method so # it doesn't look like it is a loca...
In Ruby, how can I take an array of tokens representing either integers or ranges and parse them into an array of integers that include each integer and each element in each range? Example: Given input [ "5", "7-10", "24", "29-31"] I'd like to produce output [ 5, 7, 8, 9, 10, 24, 29, 30, 31 ] Thanks. ...
Possible Duplicate: What does !! mean in ruby? Hi, I'm new to Ruby and can't find anywhere description of what "!!" means. Here's an example: def signed_in? !!current_user end If this is a double negative, why not to say: def signed_in? current_user end Please help. ...
I'm trying to add some syntax highlighting to my blog that currently uses RDiscount. I am converting the Markdown to HTML with RDiscount then parsing the HTML code blocks with CodeRay to add syntax highlighting. This is what I have so far: class Post < ActiveRecord::Base before_save :render_body def render_body self.rendered_bo...