Hello,
sorry for the delay in my reply, and thank you for the messages.
I tried the followings without any luck...
I did fresh RVM installs, both for ruby 1.9.1 and 1.8.7 and I
configured the database.yml to use postgres. With sqlite the results
are similar.
I tried both the datamapper_on_rails3 and dm_rails3_app. Here is what
I get.
Thank you very much for your help, I'm eager to start to develop on
top of datamapper! :-)
############ with ruby 1.9.1
$:~/Ruby/learning/rails3_trial/datamapper_on_rails3$ gem install i18n
tzinfo builder memcache-client rack rack-test rack-mount erubis mail
text-format thor bundler
Successfully
$:~/Ruby/learning/rails3_trial/datamapper_on_rails3$ gem install rails
--pre
ERROR: Error installing rails:
actionpack requires rack-mount (~> 0.4.0, runtime)
$:~/Ruby/learning/rails3_trial/datamapper_on_rails3$ gem install rack-
mount --version '0.4.0'
$:~/Ruby/learning/rails3_trial/datamapper_on_rails3$ gem install rails
--pre
$:~/Ruby/learning/rails3_trial/datamapper_on_rails3$ bundle install
Your bundle is complete!
$:~/Ruby/learning/rails3_trial/datamapper_on_rails3$ rake db:setup
(in /home/walle/Ruby/learning/rails3_trial/datamapper_on_rails3)
[datamapper] Setting up the "development" environment:
[datamapper] Setting up :default repository:
'datamapper_on_rails3_development' on postgres
[datamapper] Created database 'datamapper_on_rails3_development'
[datamapper] Created database 'datamapper_on_rails3_test'
[datamapper] Finished auto_migrate! for :default repository
'datamapper_on_rails3_development'
[datamapper] Setting up the "test" environment:
[datamapper] Setting up :default repository:
'datamapper_on_rails3_test' on postgres
[datamapper] Finished auto_migrate! for :default repository
'datamapper_on_rails3_test'
$:~/Ruby/learning/rails3_trial/datamapper_on_rails3$ rails server
=> Booting WEBrick
=> Rails 3.0.0.beta application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/home/walle/.rvm/gems/ruby-1.9.1-p378/gems/rack-1.1.0/lib/rack/
server.rb:208:in `initialize': No such file or directory - tmp/pids/se
rver.pid (Errno::ENOENT)
from /home/walle/.rvm/gems/ruby-1.9.1-p378/gems/rack-1.1.0/lib/rack/
server.rb:208:in `open'
from /home/walle/.rvm/gems/ruby-1.9.1-p378/gems/rack-1.1.0/lib/rack/
server.rb:208:in `write_pid'
from /home/walle/.rvm/gems/ruby-1.9.1-p378/gems/rack-1.1.0/lib/rack/
server.rb:154:in `start'
from /home/walle/.rvm/gems/ruby-1.9.1-p378/gems/railties-3.0.0.beta/
lib/rails/commands/server.rb:49:in `start'
from /home/walle/.rvm/gems/ruby-1.9.1-p378/gems/rack-1.1.0/lib/rack/
server.rb:83:in `start'
from /home/walle/.rvm/gems/ruby-1.9.1-p378/gems/railties-3.0.0.beta/
lib/rails/commands.rb:39:in `<top (required)>'
from /home/walle/Ruby/learning/rails3_trial/datamapper_on_rails3/
script/rails:10:in `require'
from /home/walle/Ruby/learning/rails3_trial/datamapper_on_rails3/
script/rails:10:in `<main>'
############ with ruby 1.9.1
$:~/Ruby/learning/rails3_trial/datamapper_on_rails3$ rails server
ruby: symbol lookup error: /home/walle/.bundle/gems/do_postgres-0.10.1/
lib/do_postgres/do_postgres.so: undefined symbol: rb_intern2
$:~/Ruby/learning/rails3_trial/datamapper_on_rails3$
On Jan 31, 11:31 pm, kristian <meier.krist...@gmail.com> wrote:
> for rails 2.3.x have a look at (I am using it for several
> projects):http://github.com/mkristian/datamapper4rails
>
> there is also rails template to get you
> started:http://github.com/mkristian/datamapper4rails/blob/master/datamapper_r...
>
> regards
> Kristian
>
> On Jan 31, 1:27 am, "LucaB." <kalli...@gmail.com> wrote:
>
> > Hello,
> > I searched a lot, but still unsuccessfully:
> > I would like to use datamapper in a Rails 2.3 app: is there any
> > "official" hot-to? For example I tried the rails_datamapper-gem-
> > approach (but not only), but I get only errors...
> > Maybe I'm the millionth asking that... :-)
> > Moreover, I would like to start playing with Rails 3 and Datamapper:
> > it is often said that Rails 3 will make a lot easier to replace
> > ActiveRecord with Datamapper, but so far I didn't find any suggestion
> > on how to do that in practice.
> > I would be really sincerely grateful to anyone who could help me to
> > begin!
> >LucaB.
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