methods_like helper for finding ruby methods
Here is a little gem I have in my ~/.irbrc I use it a lot when debugging code. I tend to use call #methods a lot on objects to figure out how they quack.
Sometimes I can remember kinda what a method's name is I want to use, but doing something like the following can generate a huge amount of output especially when working with ActiveRecord
1 | my_object.methods.sort |
So I threw together this little method that adds to ruby's base Object class
1 2 3 4 5 6 7 8 | class Object def methods_like(pat) pattern = pat.is_a?(String) ? /#{pat}/ : pat self.methods.sort.select{|m| m =~ pattern } end end |
Now from IRB, Rails console, or Padrino console you can do things like:
my_collection.methods_like(/^update/) #=> [ array of method names that start with update ] user.methods_like("name") #=> [ :first_name, :last_name, :etc ] Array.new.methods_like "sort" #=> ["sort", "sort!", "sort_by"]
Its a handy little snippet when you can't remember an exact method name, and generally for me works faster than googling for it. Toss it in your ~/.irbrc and tell me what you think.
UPDATE
I added some more functionality for getting additional methods (private, protected, singleton):
class Object # pattern - string or pattern to match # access - :public, :private, :protected, :singleton, :all def methods_like(pattern, access = :public, details = false) master_method_list = case access when :public then self.methods when :private then self.private_methods when :protected then self.protected_methods when :singleton then self.singleton_methods when :all ( self.methods + self.private_methods + self.protected_methods + self.singleton_methods ).uniq end matched_method_list = master_method_list.sort.select{ |m| m =~ ( pattern.is_a?(String) ? /#{pattern}/ : pattern ) } if !details matched_method_list else details_list = {} matched_method_list.each do |current_method| details_list[current_method] = method_details(current_method) end details_list end end # Returns details about method def method_details(current_method) current_method = current_method.to_s access_level = if self.methods.include?(current_method) :public elsif self.private_methods.include?(current_method) :private elsif self.protected_methods.include?(current_method) :protected elsif self.singleton_methods.include?(current_method) :singleton end { :owner => self.method(current_method).owner, :arity => self.method(current_method).arity, :receiver => self.method(current_method).receiver, :access => access_level } end end
Now you can do:
variable.methods_like pattern, :private #=> Array of private methods with pattern variable.methods_like pattern, :all, true #=> Hash of methods with additional details
If you pass 'true' for details you will get a hash that looks like:
Array.new.methods_like "sort", :all, true #=> { "sort_by"=>{:owner=>Enumerable, :access=>:public, :receiver=>[], :arity=>0}, "sort!" =>{:owner=>Array, :access=>:public, :receiver=>[], :arity=>0}, "sort" =>{:owner=>Array, :access=>:public, :receiver=>[], :arity=>0} }
Access options available are :public, :private, :singleton, :protected, :all
Padrino, Compass, and Sass – Working happily via Ian Serlin
My cohort, Ian Serlin, discovered this. In a project we are working on we could get Compass to play well with PadrinoRb. It seems like the #sass method doesn't care about the options being passed to it, and we kept getting stack traces rendered into our CSS files. The stack trace was ruby looking for - and failing to find compass/reset.css.
This is the code that DOESN'T work (padrino 0.9.10, compass 0.8.17, sinatra 1.0).
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | configure do register SassInitializer #The Rack Sass reloader... Compass.configuration do |config| config.project_path = File.dirname(__FILE__) config.sass_dir = "stylesheets" config.project_type = :stand_alone config.http_path = "/" config.css_dir = "stylesheets" config.images_dir = "images" config.output_style = :compressed end end get '/stylesheets/:file.css' do content_type 'text/css', :charset => 'utf-8' # This is the doc on how to give Sass some more load paths to find the compass files. # it doesnt work :P and for that matter, neither does: # sass :file, Compass.sass_engine_options # or the set :sass, whatever_hash_here sass :file, :sass => Compass.sass_engine_options end |
Our solution was to force Sass options and Compass options to merge...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | configure do register SassInitializer Compass.configuration do |config| config.project_path = File.dirname(__FILE__) config.sass_dir = "stylesheets" config.project_type = :stand_alone config.http_path = "/" config.css_dir = "stylesheets" config.images_dir = "images" config.output_style = :compressed end Sass::Plugin.options.merge!(Compass.sass_engine_options) end get '/stylesheets/:file.css' do content_type 'text/css', :charset => 'utf-8' sass :file end |
Yay, magic spells - it works. You can check out more ian magic spells at ianserlin.com.
