Run Dashing Rails on Heroku - gottfrois/dashing-rails GitHub Wiki

Setting Dashing-rails on Heroku is pretty simple:

Create a new app:
```
 heroku apps:create example
```
Add RedisToGo addon to heroku's app:
```
 heroku addons:add redistogo
```
Add PostgresSQL addon to heroku's app (this is up to you):
```
 heroku addons:add heroku-postgresql:dev
```

Add the following gems to your Gemfile:

 gem 'puma'
 gem 'rails_12factor', group: :production
 gem 'pg',             group: :production

Create a new Procfile for you application:

 web: bundle exec puma -p $PORT -e $RACK_ENV -t 0:5

Tell Dashing-rails how to use the Heroku's redis connection by setting redis credentials in config/initializers/dashing.rb:

 config.redis_host     = URI.parse(ENV["REDISTOGO_URL"]).host
 config.redis_port     = URI.parse(ENV["REDISTOGO_URL"]).port
 config.redis_password = URI.parse(ENV["REDISTOGO_URL"]).password

Create the file config/initializers/database_connection.rb and add the following lines:

 Rails.application.config.after_initialize do
   ActiveRecord::Base.connection_pool.disconnect!

   ActiveSupport.on_load(:active_record) do
     config = Rails.application.config.database_configuration[Rails.env]
     config['reaping_frequency'] = ENV['DB_REAP_FREQ'] || 10 # seconds
     config['pool']              = ENV['DB_POOL']      || 5
     ActiveRecord::Base.establish_connection(config)
   end
 end

Edit config/environments/production.rb with the following (default js compression cause widget's name issues due to mangling js functions and variables):
```
 config.assets.js_compressor = Uglifier.new(mangle: false)
```

Locally compile assets using:

 RAILS_ENV=production bundle exec rake assets:precompile

Commit and Push to heroku:

 git commit -m "configure dashing to work on heroku"
 git push heroku master

That's it! Visit http://your_app.herokuapp.com/dashing/dashboards

You can checkout the following application on Github running on Heroku

puma -t 0:5 lets you configure the number of threads you want puma to run on.