Rails 如何运行 rake 任务

Question

How do I run this rake file in terminal/console?

my statistik.rake in lib/tasks

desc "Importer statistikker"
namespace :reklamer do
  task :iqmedier => :environment do
    ...
  end
  task :euroads => :environment do
    ...
  end
  task :mikkelsen => :environment do
    ...
  end
  task :orville => :environment do
    ...
  end
end

Answer 1

You can run Rake tasks from your shell by running:

rake task_name

To run from from Ruby (eg, in the Rails console or another Rake task):

Rake::Task['task_name'].invoke

To run multiple tasks in the same namespace with a single task, create the following new task in your namespace:

task :runall => [:iqmedier, :euroads, :mikkelsen, :orville] do
  # This will run after all those tasks have run
end

Answer 2

Rake::Task['reklamer:orville'].invoke

或者

Rake::Task['reklamer:orville'].invoke(args)

Answer 3

Sometimes Your rake tasks doesn't get loaded in console, In that case you can try the following commands

require "rake"
YourApp::Application.load_tasks
Rake::Task["Namespace:task"].invoke

Answer 4

Have you tried rake reklamer:iqmedier ?

My custom rake tasks are in the lib directory, not in lib/tasks. Not sure if that matters.

Answer 5

If you aren't sure how to run a rake task, first find out first what tasks you have and it will also list the commands to run the tasks.

Run rake --tasks on the terminal.

It will list the tasks like the following:

rake gobble:dev:prime             
rake gobble:dev:reset_number_of_kits                                    
rake gobble:dev:scrub_prod_data

You can then run your task with: rake gobble:dev:prime as listed.

Answer 6

In rails 4.2 the above methods didn't work.

1. Go to the Terminal.
2. Change the directory to the location where your rake file is present.
3. run rake task_name.
4. In the above case, run rake iqmedier - will run only iqmedir task.
5. run rake euroads - will run only the euroads task.

6. To Run all the tasks in that file assign the following inside the same file and run rake all

    task :all => [:iqmedier, :euroads, :mikkelsen, :orville ] do #This will print all the tasks o/p on the screen end

Answer 7

As the https://stackoverflow.com/a/5641807/7262646 and https://stackoverflow.com/a/49400110/7262646 described

you have to add

require 'rake'
Rake::Task.clear
YourAppName::Application.load_tasks

on the top of the file.

YourAppName comes from config/applicaion.rb , which is defined as a namespace, such as:

module YourAppName
  class Application < Rails::Application
  end
end

and then you can use

Rake::Task["task_name"].invoke

to invoke your task.

Answer 8

here is a very good tutorial on running rake tasks that i found helpful..

http://jasonseifer.com/2010/04/06/rake-tutorial