How can I use clockwork to input data every hour? - ruby-on-rails

Question

My environment is Macbook OSX 10.7 Lion with Ruby 2.0 and Rails 4.
I am new to RoR. I built a website with one column database using a scaffold.
It's just a little website about weather.
I want to input degrees to database every hour.
And I found the gem clockwork, but I have no idea how to use it with my project.
I wrote clock.rb and put it in my project file and ran rails s but nothing happened.
Here is myproject/clock.rb
myproject/clock.rb
require 'clockwork'
module Clockwork
handler do |job|
puts "Running #{job}"
every(1 hours, ''){
Mydata.create(:degree => input_data)
}
end
What should I do with it or where should I put the file?
They say that I need to use $ clockwork clock.rb, but when I run rails s, there's no way to use that...
Thanks a lot.

Answer 1

As stated in the official docs you need a couple of things.
setup the clock file, I've set it in app/clock.rb
require 'clockwork'
module Clockwork
handler do |job|
case job
when 'weather.input_degree'
Mydata.create degree: input_data
# when 'some_other_task'
# ...
else
puts "Couldn't find your job!"
end
end
every(1.hour, 'weather.input_degree') # the string indicates an arbitrary job name
# every(20.seconds, 'weather.some_other_task')
end
The starting process. The key is to use something like Foreman
$ gem install foreman
Create a file named Procfile in root of your app:
web: bundle exec rails -s
clock: bundle exec clockwork app/clock.rb
# any_other_service_you_want: bash script here
start your server
$ foreman start

Answer 2

Add to Gemfile ­
gem 'clockwork'
after adding upper listed gem in gemfile, use bundle install to add this gem into project.
Example ­
Create a file clock.rb under /lib directory
clock.rb
require File.expand_path('../../config/boot', __FILE__)
require File.expand_path('../../config/environment', __FILE__)
require 'clockwork'
include Clockwork
module Clockwork
## Here Student is a domain class, having a method insertRecord to
## insert a record in DB
every(20.seconds, 'job ­ Inserting Record in DB') { Student.insertRecord }
end
Command to Run the clockword
bundle exec clockwork lib/clock.rb

Answer 3

This code needs stay outside of handler block:
every(1.hour, ''){ Mydata.create(:degree => input_data) }
You can execute the clock like that:
bundle exec clockwork clock.rb

Answer 4

You can make use of Cron. Write a rake task and call the rake task from the Cron for repeating processes.
Example (Add this to cron to run the task every hour):
0 * * * * cd /home/projectdir;rake do:task