I have been working on a project with on Github and we are using Waffle.io to organize our issues on an agile board. One bad thing about Github is that it not always apparent what issue a commit resolved. To add context to commits I have begun appending the issue number to commit message. When viewing the commit in web interface of Github, it will automatically link to the issue. To accomplish this, I use commit that take the form of "This is my first commit [issue #123]". Obviously, this process can be automated.

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If you recently upgraded Ansible and you are getting an error like:

[DEPRECATION WARNING]: Using bare variables is deprecated. Update your
playbooks so that the environment value uses the full variable syntax
('{{rbenv_plugins}}').
This feature will be removed in a future release.
Deprecation warnings can be disabled by setting deprecation_warnings=False in
ansible.cfg.

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This article assumes you have already setup a Rails 5 project and you have installed npm locally.

Add these to your Gemfile

gem "browserify-rails"
gem "react-rails"

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While we will have to change this in our production setup, if we are just testing Guardian locally, we can generate a secret_key with this following command:

First ensure that we have added Guardian to the application by adding it to mix.exs

defp deps do
  [
    # ...
    {:guardian, "~> 0.13.0"}
    # ...
  ]
end

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![The Difference between build and new in Ruby on Rails & ActiveRecord] (/img/uploads/difference-build-new-ruby-rails-activerecord.jpg)

TLDR: For an ActiveRecord Association new and build are the same.

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Rails routing helpers can be imported into any class that you define in your project. The easiest way is to use include Rails.application.routes.url_helpers

Here’s an example of PORO that implements logic for showing a sign_in link or register link depending on if the user exists or not.

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I see many project get nested routes wrong. Developers do not use Ruby modules to reflect the relationship between the parent and children nesting of controllers. Here is an example of the wrong way (IMHO). Let’s say we have a customer and the customer has_many orders and has_one profile. Some developers will represent it like this.

/customers path in the file app/controllers/customers_controller.rb

class CustomersController < ApplicationController
  def index
    ...
  end
end

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The simplest way to test validates_attachment_file_name and validates_attachment_content_type configurations of the Rails model that has a paperclip attachment is to use the allow_value method in the shoulda gem.

The following example uses rspec to demonstrate.

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Will_paginate and Kaminari are both popular Ruby Gems for displaying and parsing pagination in a Ruby on Rails application. I won’t wade into the seething cauldron of debate about which is better suited for the task.

To center the will_paginate pagination links, do the follow.

<div class="pagniation-wrapper">
  <%= will_paginate @accounts %>
</div>

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Issues I have found when doing Ruby on Rails upgrades of Ruby version 1.8.7 to 2.2 or 2.1:

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