How to run rake tasks from console?

Question

I want to invoke my rake task from console. Is it doable? if yes, how to do so?

I tried this on console:

require 'rake'
Rake::Task['my_task'].invoke

but it give me this error:

RuntimeError: Don't know how to build task

it's like the rake cannot found the task.

any help would be appreciated.

Thank you

Edit: I am using rails 2.3.5

Daniel Rikowski · Accepted Answer · 2019-01-30T18:53:38.433

249

Running your Rake tasks requires two steps:

Loading Rake
Loading your Rake tasks

You are missing the second step.

Normally this is done in the Rakefile, but you have to do it manually here:

require 'rake'
Rails.application.load_tasks # <-- MISSING LINE
Rake::Task['my_task'].invoke

edited Jan 30 '19 at 18:53

answered Apr 08 '12 at 09:30

Daniel Rikowski

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For more options please consult http://stackoverflow.com/questions/577944/how-to-run-rake-tasks-from-within-rake-tasks – Jahan Zinedine Dec 27 '12 at 19:48
9

You might want to note the difference between saying `.invoke` and `.execute`, if you need to run the task several times (such as a data sanity checker with an app that takes too long to start up) then you'll want to `.execute` the task. – mu is too short Mar 05 '13 at 04:12
5

If you need to pass arguments, do it in the invoke method: `.invoke(arg1, arg2,...)` – Nuno Silva Apr 02 '19 at 09:43
Is this the best approach when needing to run a rake task from within the app itself? (for example I will run `db:seed` each time the test suite runs to reseed the database. I used the above code and it works, just wondering if it's best practice or if there's some other way? – stevec Jan 23 '22 at 05:50

garno · Answer 2 · 2015-02-24T16:19:07.927

18

The easiest way to do it is to run %x[command] from the irb. I'm not sure if what you want to achieve though.

%x[rake db:migrate]

EDIT: I highly recommend to use .invoke as Daniel says in the accepted answer.

edited Feb 24 '15 at 16:19

answered Feb 02 '11 at 14:12

garno

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the problem is, rake doesn't seem to recognize my task. any idea why? – Fajarmf Feb 20 '11 at 22:25
it works perfectly @garno ! sorry I know it's been a year and suddenly I am running into the same need. – Fajarmf Feb 16 '12 at 00:06
2

You can also surround it in back ticks if you'd like. – Sam Soffes May 14 '12 at 18:29
This is slow because it has to spin up a new process and instantiating your Rails app again. `invoke` is better and more efficient. – Joshua Pinter Mar 15 '20 at 02:30

score 17 · Answer 3 · answered Aug 22 '18 at 12:26

17

The easy way is:

Rails.application.load_tasks
Rake::Task['my_task'].invoke

answered Aug 22 '18 at 12:26

Mohamed Ziata

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This is not only the easy way but also means you're not spinning up a new process and instantiating your Rails app again. Easy _AND_ Fast! – Joshua Pinter Mar 15 '20 at 02:30

S.Yadav · Answer 4 · 2019-01-17T11:06:20.943

7

I am using rails 5.x.x, and was in the need the do the same form rails console.
I have create rake task here-

app/lib/task_to_execute.rake

Here is the command worked for me-

Load Rails.application.load_tasks

Rake::Task['task_to_execute:task_name'].invoke

Worked for me!

edited Jan 17 '19 at 11:06

answered Jan 17 '19 at 10:36

S.Yadav

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score 2 · Answer 5 · answered Sep 14 '18 at 10:13

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Just a note that if you are in the rails console via rails c you can just call/run the rake task method by irb(main):001:0> TaskClassName.new.my_task

answered Sep 14 '18 at 10:13

aabiro

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How to run rake tasks from console?

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