# Don't know how to build task 'engine\_migrate' **URL:** \ **Category:** Engines\ **Created:** [March 30, 2006, 11:07pm UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402 "2006-03-30T23:07:46Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [March 30, 2006, 11:07pm UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/1 "2006-03-30T23:07:46Z")
I get the following error when trying to install riki. > rake engine\_migrate ENGINE=riki rake aborted! Don’t know how to build task ‘engine\_migrate’ Anyone know what causes this. I had the same issue with the login engine so I manually updated the db. ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [March 30, 2006, 11:16pm UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/2 "2006-03-30T23:16:15Z")
The reason is in Rails 1.1 all the rake tasks have changed. Try rake db:migrate:engines ENGINE=riki. Also “rake -T” is helpful command. -Chad ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [March 30, 2006, 11:25pm UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/3 "2006-03-30T23:25:26Z")
The syntax for the rake tasks has changed - please check the engines README or mailing list archives. - james On 3/30/06, AT [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > – > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). > > * * * > > engine-users mailing list > removed\_email\_address@domain.invalid > [http://lists.rails-engines.org/listinfo.cgi/engine-users-rails-engines.org](http://lists.rails-engines.org/listinfo.cgi/engine-users-rails-engines.org) – - J \* ~ ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [March 31, 2006, 1:43pm UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/4 "2006-03-31T13:43:11Z")
The ‘old’ rake tasks simply don’t exist anymore - they needed to be rewritten, and as part of the rewrite I adopted the new rake namespace syntax. - james On 3/31/06, David C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > On 3/30/06, AT [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > > – > > > > * * * > > > > engine-users mailing list > > removed\_email\_address@domain.invalid > > [http://lists.rails-engines.org/listinfo.cgi/engine-users-rails-engines.org](http://lists.rails-engines.org/listinfo.cgi/engine-users-rails-engines.org) > > * * * > > engine-users mailing list > removed\_email\_address@domain.invalid > [http://lists.rails-engines.org/listinfo.cgi/engine-users-rails-engines.org](http://lists.rails-engines.org/listinfo.cgi/engine-users-rails-engines.org) – - J \* ~ ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [March 31, 2006, 1:31pm UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/5 "2006-03-31T13:31:00Z")
Seems to me a saw that ‘existing’ rake tasks would be recognized with or without the namespace… ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [April 12, 2006, 7:53pm UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/6 "2006-04-12T19:53:51Z")
Thank you, it works !! Chad Westfall wrote: > The reason is in Rails 1.1 all the rake tasks have changed. Try rake > db:migrate:engines ENGINE=riki. Also “rake -T” is helpful command. > -Chad ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [July 24, 2006, 7:27am UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/7 "2006-07-24T07:27:27Z")
Guest wrote: > James A. wrote: > > > The ‘old’ rake tasks simply don’t exist anymore - they needed to be > > rewritten, and as part of the rewrite I adopted the new rake namespace > > syntax. > > > > - james > > Please update the tutorials. I have spent hours trying to guess at how > to get this to work. A complete waste of time. Even after getting rake > to work it is still not working I get a routing erro Recognition failed > for “/login” Hey there… ``` The best way to find out the rake command for migration script ``` execution is type ‘Rake -T’ and check out the options listed out. I tried with the following command ‘Rake migrate’ and it worked for me. ‘Rake db:migrate’ and ‘db:migrate:engines ENGINE=riki’ failed miserably. thnx ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [July 24, 2006, 11:06am UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/8 "2006-07-24T11:06:03Z")
On 7/24/06, freekyfashions [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > ``` > 'Rake db:migrate' and 'db:migrate:engines ENGINE=riki' failed > > ``` > > miserably. What errors did you get? ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [July 27, 2006, 1:42am UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/9 "2006-07-27T01:42:56Z")
James A. wrote: > On 7/24/06, freekyfashions [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > ``` > > 'Rake db:migrate' and 'db:migrate:engines ENGINE=riki' failed > > > > ``` > > > > miserably. > > What errors did you get? Hi, I’ve updated the rails version to 1.1 version and db:migrate is working fine. but ‘‘db:migrate:engines ENGINE=riki’’ still gives error: * * * ## rake aborted! Don’t know how to build task ‘db:migrate:engines’ any clue. ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [July 27, 2006, 11:31am UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/10 "2006-07-27T11:31:45Z")
Do you see the ‘db:migrate:engines’ task when you run ‘rake -T’ ? If not, are you sure you’ve got the latest version of the engines plugin, from [http://svn.rails-engines.org/plugins/engines](http://svn.rails-engines.org/plugins/engines)? - james ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [May 7, 2006, 7:34am UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/11 "2006-05-07T07:34:27Z")
James A. wrote: > The ‘old’ rake tasks simply don’t exist anymore - they needed to be > rewritten, and as part of the rewrite I adopted the new rake namespace > syntax. > > - james Please update the tutorials. I have spent hours trying to guess at how to get this to work. A complete waste of time. Even after getting rake to work it is still not working I get a routing erro Recognition failed for “/login” ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [July 28, 2006, 2:22am UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/12 "2006-07-28T02:22:02Z")
James A. wrote: > Do you see the ‘db:migrate:engines’ task when you run ‘rake -T’ ? If > not, are you sure you’ve got the latest version of the engines plugin, > from [http://svn.rails-engines.org/plugins/engines](http://svn.rails-engines.org/plugins/engines)? > > - james Hi, I checked the tasks,I got only db:migrate. Thanks for your info. Cheers ---
**Author:** ![ATATAT](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a88e57/32.png) [@ATATAT](https://www.ruby-forum.com/u/ATATAT)\ **Post date:** [May 9, 2007, 10:46pm UTC](https://www.ruby-forum.com/t/dont-know-how-to-build-task-engine-migrate/56402/13 "2007-05-09T22:46:36Z")
I have the same problem: rake db:migrate:engines ENGINE=login\_engine keeps giving me this error: “Don’t know how to build task ‘db:migrate:engines’” I did a --trace, but that didn’t help. I have the 1.2 version from engines plugin. Any help greatly appreciated, i’m kinda stuck atm.