Krant

Display app news and broadcast messages in Active Admin.

Add this line to your application's Gemfile:

gem 'krant'

And then execute:

$ bundle

Include javascripts and stylesheets:

// app/assets/stylesheets/active_admin.scss

// After active_admin/base has been imported
@import "krant/active_admin";

Install migrations and migrate:

$ bin/rake krant:install:migrations
$ bin/rake db:migrate

Configure the Active Admin view component and add the broadcast messages admin to the load path:

# config/initializers/active_admin.rb
ActiveAdmin.application.load_paths.unshift(Krant.active_admin_load_path)

ActiveAdmin.setup do |config|
  config.view_factory.header = Krant::Views::HeaderWithBroadcastMessages
end

Configure for which locales you want to enter broadcast message translations. The corresponding text fields will be displayed:

# config/initializers/krant.rb
Krant.broadcast_message_locales = [:en, :fr, :es]

Messages with different translations can now be configured via the admin interface and will be displayed once marked as active. Broadcast messages have full markdown support.

The color of the broadcast message bar can be configured via SCSS

// app/assets/stylesheets/active_admin.scss

$krant-broadcast-message-bar-color: #fff3bd;
$krant-broadcast-message-bar-border-color: transparent;

@import "krant/active_admin";

Provide a news collection:

# lib/my_app.rb
module MyApp
  def self.news
    @news ||= Krant::News.about(MyApp)
  end
end

The passed parameter is only used as a namespace for item names. You can also pass a string. Passing a constant is an easy way to ensure uniqness.

Add a news page:

# app/admins/news.rb
ActiveAdmin.register_page 'news' do
  Krant.active_admin_news_page(self)

  content title: 'News' do
    krant_news_list(MyApp.news)
  end
end

If you are using the CanCan authorization adapter, grant access to the page and its seen action:

# app/models/ability.rb
can [:read, :seen], ActiveAdmin::Page, name: 'news'

Add a link to the news page into the utility navigation:

# config/initializers/active_admin.rb
config.namespace :admin do |admin|
  admin.build_menu :utility_navigation do |menu|
    Krant.add_active_admin_news_menu_item_to(menu,
                                             news: MyApp.news,
                                             url: -> { admin_news_path })
  end
end

Create news items for new features:

# config/initializers/news/some_new_feature.rb
MyApp.news.item(:some_new_feature,
                 title: {
                   en: 'Some title',
                   de: 'Ein Titel'
                 },
                 body: {
                   en: 'Some text using [Markdown](http://http://commonmark.org/).',
                   de: 'Text mit [Markdown](http://http://commonmark.org/).',
                 })

Define a Rake tasks to persists news items in the database:

# Rakefile
require 'krant/tasks'
Krant::Tasks.install { MyApp.news }

and run the defined task after each deploy:

$ bin/rake news:persist

After checking out the repo, run bin/setup to install dependencies. You can also run bin/console for an interactive prompt that will allow you to experiment.

To run the tests install bundled gems and invoke RSpec:

$ bundle
$ bundle exec rspec

The test suite can be run against different versions of Rails and Active Admin (see Appraisals file):

$ appraisal install
$ appraisal rspec

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/codevise/krant. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.