#1278 ✓resolved

rake db:sessions:* fails

Reported by Gibheer | May 20th, 2010 @ 12:16 PM | in 1.0.0

The command

# rake db:sessions:create


# rake db:sessions:clean

fail with the message "undefined method configurations' for Rails::DataMapper:Module". The Problem is in the file lib/dm-rails/railties/database.rake line 113 and 120.

Comments and changes to this ticket

  • Gibheer

    Gibheer May 20th, 2010 @ 12:51 PM

    I did a grep on the complete code of dm-rails and there was no Rails::DataMapper.configurations[Rails.env] anywhere, but I found Rails::DataMapper.configuration.repositories[Rails.env]. When I replaced the first with the latter, the rake script worked. Is that the intended behavior?

  • Dan Kubb (dkubb)

    Dan Kubb (dkubb) May 20th, 2010 @ 12:52 PM

    • State changed from “new” to “unconfirmed”
    • Assigned user set to “Martin Gamsjaeger (snusnu)”
  • Gibheer

    Gibheer May 21st, 2010 @ 02:54 PM

    There are two more changes, to make the Sessions work.

    file: lib/dm-rails/session_store.rb
    line 4: module ActionDispatch
    line 5: module Session

    These are necessary, that ActionDispatch can find the SessionStore.
    So there are two more changes to make:
    file: lib/dm-rails/railties/database.rake
    line 114: ActionDispatch::Session::SessionStore::Session.auto_migrate!
    line 121: ActionDispatch::Session::SessionStore::Session.all.destroy!

    together with the changes of #2, that should do.

  • Gibheer

    Gibheer May 21st, 2010 @ 02:56 PM

    Ah, I forget to mention, how to get it working. You have to change the config/initialize/session_store.rb and comment out the third line. Then append the following two lines:

    require 'dm-rails/session_store'
    Rails.application.config.session_store :session_store

  • Dan Kubb (dkubb)

    Dan Kubb (dkubb) May 26th, 2010 @ 02:07 AM

    • Milestone set to 1.0.0
  • Dan Kubb (dkubb)

    Dan Kubb (dkubb) June 3rd, 2010 @ 02:22 PM

    • State changed from “unconfirmed” to “resolved”

    (from [2f517413dc966c29e6781bc2132a95ff169871dd]) Adds support for datamapper session stores


    Replace the content of

    • config/initializers/session_store.rb

    with the following:

    require 'dm-rails/session_store' Rails.application.config.session_store(



    [#1278 state:resolved] http://github.com/datamapper/dm-rails/commit/2f517413dc966c29e6781b...

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