21 Dec 2011
15 Dec 2011
Ruby Reduce Alpha Release
Today I have released Ruby Reduce. A gem, that as the name implies, is an implementation of the google’s map reduce function in Ruby. Right now the implementation is very limited in several key ways:
- it only accepts Rails 3 logs as input
- output written to MongoDB
- single threaded no distribution.
Despite these limitations it does work and it will allow you to reduce Rails log files so that you can analysis the data that they contain. More information and usage at the Github page
01 Nov 2011
RubyConf.TW 2011 Presentation Video
28 Sep 2011
Jasmine with Rails 3.1
I have been writing a JavaScript intensive Rails 3.1 application recently and haven been using Jasmine to test my JavaScript. When I started this application I was using the RC version of Rails 3.1 and was generating my assets based on Jeff Dean’s post however with the release of 3.1 stable I found this method does not work any more. So I had to change the jasmine_config.rb to make it work again.
Also because Rails is out of beta now so I am no longer calling the rake task, instead I am. Using the API that the rake task uses.
So to keep things brief here is what my jasmine.rb looks like (located in spec/javascript/support)
1 module Jasmine
2 class Config
3
4 def js_files(spec_filter = nil)
5 generated_files_directory = File.expand_path("../../generated", __FILE__)
6 rm_rf generated_files_directory, :secure => true
7 precompile_app_assets
8 compile_jasmine_javascripts
9
10 # this is code from the original jasmine config js_files method - you could also just alias_method_chain it
11 spec_files_to_include = spec_filter.nil? ? spec_files : match_files(spec_dir, [spec_filter])
12 src_files.collect {|f| "/" + f } + helpers.collect {|f| File.join(spec_path, f) } + spec_files_to_include.collect {|f| File.join(spec_path, f) }
13 end
14
15 private
16
17 # this method compiles all the same javascript files your app will
18 def precompile_app_assets
19 puts "Precompiling assets..."
20
21 # make sure the Rails environment is loaded
22 require 'config/environment'
23 # ::Rake.application['environment'].invoke
24
25
26
27 config = Rails.application.config
28 env = Rails.application.assets
29 target = Rails.root.join("spec/javascripts/generated/assets")
30
31
32 config.assets.precompile.each do |path|
33 env.each_logical_path do |logical_path|
34 if path.is_a?(Regexp)
35 next unless path.match(logical_path)
36 elsif path.is_a?(Proc)
37 next unless path.call(logical_path)
38 else
39 next unless File.fnmatch(path.to_s, logical_path)
40 end
41
42 if asset = env.find_asset(logical_path)
43 asset_path = config.assets.digest ? asset.digest_path : logical_path
44 filename = target.join(asset_path)
45
46 mkdir_p filename.dirname
47 asset.write_to(filename)
48 asset.write_to("#{filename}.gz") if filename.to_s =~ /\.(css|js)$/
49 end
50 end
51 end
52 end
53
54 # this method compiles all of the spec files into js files that jasmine can run
55 def compile_jasmine_javascripts
56 puts "Compiling jasmine coffee scripts into javascript..."
57 root = File.expand_path("../../../../spec/javascripts/coffee", __FILE__)
58 destination_dir = File.expand_path("../../generated/specs", __FILE__)
59
60 glob = File.expand_path("**/*.js.coffee", root)
61
62 Dir.glob(glob).each do |srcfile|
63 srcfile = Pathname.new(srcfile)
64 destfile = srcfile.sub(root, destination_dir).sub(".coffee", "")
65 FileUtils.mkdir_p(destfile.dirname)
66 File.open(destfile, "w") {|f| f.write(CoffeeScript.compile(File.new(srcfile)))}
67 end
68 end
69
70 end
71 end
72
73
74 # Note - this is necessary for rspec2, which has removed the backtrace
75 module Jasmine
76 class SpecBuilder
77 def declare_spec(parent, spec)
78 me = self
79 example_name = spec["name"]
80 @spec_ids << spec["id"]
81 backtrace = @example_locations[parent.description + " " + example_name]
82 parent.it example_name, {} do
83 me.report_spec(spec["id"])
84 end
85 end
86 end
87 end
Here is an exert from jasmine.yml, also located in spec/javascript/support.
src_files:
- spec/javascripts/generated/assets/application*.js
With these changes I have not had any problems with my jasmine suite running correctly.
21 Sep 2011
A New Start
Well, I have been bouncing around trying to figure out what blogging system I wanted to use to host Coding For Rent. In the end I ended up with Jekyll. I mostly choose Jekyll because it is dead simple to use and allows me the flexibility to do what I want. But, most importantly it allows me to edit the posts in which ever way I want.
