Archive for June, 2008

Using faker to test your application

Recently I needed some data to test such features as pagination and search. I only had 10 fixtures in the database and this wasn’t enough to test on.

I could have created a bunch of records filling in the fields with random characters but that is a not a very eloquent solution. Instead I wrote a rake task saved as: lib/tasks/faker.rake.

Here is my code

  desc "Insert 100 projects using the faker gem"
  task :insert_projects => :environment do
    require 'faker'
    1..100.times do |i|
      b = Project.create( :name => Faker::Company.name,
                            :slogan => Faker::Company.bs)
    end
    puts "Faked project records"
  end

Originally I used .create! but I found occasionally there were conflicting records so a .save may pass false, now it won’t fail if it passes false and will carry on with the rest.

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Crummy New Feature: Symbol Argument

I have just added a feature to Crummy where you can give an argument of a symbol which is then translated to get the instance variable and evaluated like so:


before_filter :load_comment
add_crumb :comment # => add_crumb(@comment.to_s, comment_path(@comment.to_param))

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Introducing Crummy

I have worked on many applications that require breadcrumbs. Every time, one of the developers has built a quick custom solution. Finally, I decided that we needed a complete solution that we could easily add to future projects, and thus Crummy was born.

Requirements

I set a few requirements that must be fulfilled in order for me to call the plugin a success. They were:

  • Ability to add breadcrumbs at Controller class level (like a before filter)
  • Ability to add breadcrumbs in the controller methods (such as actions)
  • Ability to add breadcrumbs from the views
  • Ability to add breadcrumbs with or without an url
  • No variable conflicts (such as instance variables)
  • Full and strong spec coverage
  • Good documentation

I managed to fulfill these requirements and add a few shiny methods to make life easy.

Examples of Usage

    class ApplicationController < ActionController::Baseee
      add_crumb 'Home', '/' # This will display on EVERY list of breadcrumbs
    end
  


    class BusinessController < ApplicationController
      # The load order DOES matter.
      add_crumb("Businesses") { |instance| instance.send :businesses_path } # Show on all actions
      add_crumb("Comments", :only => [:comments, :show]) { |instance| instance.send :business_comments_path } # Only add the comments link on the comments and show actions.
      before_filter :load_comment, :only => “show”

      def show
       add_crumb @business.display_name, @business
      end

      def load_comment
       @comment = Comment.find(params[:id])
      end
    end
  

Golden Feature

One of the most useful argument usage is add_crumb :comment. What this does is turns the symbol into an instance variable (@comment.) Then it roughly translates into:

  # add_crumb :comment
  before_filter :add_comment_breadcrumb
  def add_comment_breadcrumb
    add_crumb @comment.to_s, @comment
  end

Installation

script/plugin install git://github.com/zachinglis/crummy.git

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Introducing Holler

One thing that separates us at Hashrocket is the fact that we have a great team of Ruby experts. This is great if you get stuck, there is always at least one person who can help you on something. We also follow the great agile principle of pairing, which means that if someone is doing something you are interested in, then you can watch and learn with them.

Everyone is hesitant to get into Backpack for the purposes of updating their status and it is too private to talk about on Twitter so I thought I would come up with my own solution. Originally the Backpack feature came from their In/Out application, my good friend David Smalley came up with his own Merb solution too, but I wanted something Rails and thus Holler was born.

Holler Almost v1

It has only taken me 4 hours so far but I would like to introduce Holler. There are a few big features that I am planning on: Fluid integration similar to Shout, Javascript where its needed, tags, twitter integration (direct messaging to the application), more ways to view statuses.

Please feel free to fork it and make your own changes! Get Holler.

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GMail Tips

Usually I do not like to post a topic so short but I learnt a few tricks that a few of you may not know. I know most people I know use Google Mail so thought it’d be helpful.

Suggesting your email is foobar@gmail.com, you may put periods in there as you please. foo.bar@gmail.com and f.o.o.b.a.r@gmail.com both work (Please do not use the latter; i beg).

Secondly, plus signs can be added onto the end followed by anything you want. You could have foobar+work@gmail.com and such and that works as a catch-all.

Obviously it can be used in conjunction with each other.

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