db:create with ActiveRecord gives "uninitialized constant User::DataMapper - (NameError)" - merb

Message from discussion db:create with ActiveRecord gives "uninitialized constant User::DataMapper - (NameError)"

Matt Aimonetti

More options Nov 12 2008, 8:00 pm

From: "Matt Aimonetti" <mattaimone...@gmail.com>

Date: Wed, 12 Nov 2008 20:00:53 -0500

Local: Wed, Nov 12 2008 8:00 pm

Subject: Re: [merb] db:create with ActiveRecord gives "uninitialized constant User::DataMapper - (NameError)"

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The generated merb stack app defines a DM User so it won't work for you.
Please follow my last advice and create a core app if you want to use
JRuby. We need a DM adapter for JDBC but in the mean time, you can't use a
merb stack app with JRuby.

-Matt

On Wed, Nov 12, 2008 at 7:56 PM, Arun <arun.gu...@gmail.com> wrote:

> Created a template Merb app, changed the ORM to activerecord in config/
> init.rb, commented DM in config/dependencies.rb, generated a Model as:

> jruby -S merb-gen model --orm activerecord Runner
> distance:float,minutes:integer

> Finally creating the database using "rake db:create" gives the
> following error:

> ~ It took: 0
> ~ Loading: Merb::BootLoader::MixinSession
> ~ It took: 0
> ~ Loading: Merb::BootLoader::BeforeAppLoads
> ~ It took: 0
> ~ Loading: Merb::Orms::ActiveRecord::Connect
> ~ Connecting to database...
> ~ It took: 0
> ~ Loading: Merb::Slices::Loader
> ~ Loaded slice 'MerbAuthSlicePassword' ...
> ~ It took: 1
> ~ Loading: Merb::BootLoader::LoadClasses
> ~ Could not load /Users/arungupta/samples/jruby/merb/jruby-1.1.5/
> samples/merb/hello/app/models/user.rb:

> uninitialized constant User::DataMapper - (NameError)

> This is all using JRuby 1.1.5.

> What's missing ?

> -Arun

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