How to run Cron jobs in Rails?
To run Cron jobs in a Rails application, you can use a gem called whenever
. This gem allows you to define your Cron jobs in Ruby syntax and generates a crontab file for you. Here are the steps to use whenever
in your Rails application:
Install whenever
gem
Add the whenever
gem to your Gemfile and run bundle install
:
gem 'whenever', require: false
Generate configuration file
Generate the whenever
configuration file. Execute this from your Rails app root to create the schedule.rb
file:
bundle exec wheneverize .
Define your Cron jobs
Define your Cron jobs in config/schedule.rb
:
every 1.day, at: '4:30 am' do
runner 'MyModel.my_task'
end
This Cron job will run every day at 4:30 am and execute the my_task
method on the MyModel
model.
Update crontab
Let whenever
write your job into the crontab.
bundle exec whenever --update-crontab
Note: Whenever
takes into consideration your Rails app environment when updating the crontab. If you're using the development
environment, then run the command with the option below (default is production
).
whenever --update-crontab --set environment='development'
This will update the crontab file with your Cron jobs. You can verify that the Cron jobs have been added to the crontab file by running the command crontab -l
.
Note: Whenever creates a separate crontab file for your Rails application. So, you can run Cron jobs for your Rails application without affecting other Cron jobs on the system.
By following these steps, you can easily run Cron jobs in your Rails application using whenever
.
-
How to run a Cron job weekly?
To run a cron job weekly, you can use the following format in your crontab file: 0 0 * * 0 /path/to/command This cron job will run at midnight (0 hour and 0 minute) on Sunday (day 0). Replace /path...
Questions -
How to run cron jobs inside a docker container?
Running cron jobs inside a Docker container can be done by installing the cron daemon and scheduling the jobs in the container. Here are the steps to run cron jobs inside a Docker container: Start ...
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