不知道如何构建任务“ weeklydelete”

Question

So, I'm trying to setup Heroku scheduler with my cron_job task and I'm getting the following error when running heroku run rake weeklydelete:

Don't know how to build task 'weeklydelete'

My task code looks like this:

task :weeklydelete do
  set :output, "#{path}/log/cron.log"
  job_type :script, "'#{path}/script/:task' :output"

  every :sunday, at: "3:00 AM" do
  runner "Event.clear_expired"
  runner "Activity.clear_expired"
  end

end

Essentially, I want to delete Events and Activities that are a week old - every Sunday.

What am I doing wrong?

Update: # lib/tasks/deletion.rb

namespace :deletion do
  desc :weekly_delete => :environment do
    set :output, "#{path}/log/cron.log"
    job_type :script, "'#{path}/script/:task' :output"

    every :sunday, at: "3:00 AM" do
    runner "Event.clear_expired"
    runner "Activity.clear_expired"
  end
 end
end

and in console called:

heroku run deletion:weekly_delete -a appname

error:

Running `rake weekly_delete` attached to terminal... up, run.4492
rake aborted!
Don't know how to build task 'weekly_delete'

Answer 1

将文件名从delete.rb更改为delete.rake

Answer 2

It has to be like this:

# lib/tasks/deletion.rb
namespace :deletion do
  desc :weekly_delete => :environment do
    # ...
  end
end

and you call it like this:

$ rake deletion:weekly_delete