DataMapper
Groups Alerts Groups Alerts
Create a group...
Google Groups Home 	Recently Visited Groups | Help | Sign in

DataMapper


Home
Discussions
Pages
Files
About this group
Join this group

Recent pages and files
do_sqlite3-0.9.0-x86-mswin32-60.gem 	Apr 28
do_postgres-0.9.0-x86-mswin32-60.gem 	Apr 28
do_mysql-0.9.0-x86-mswin32-60.gem 	Apr 28
Installing DM edge + Merb 	Apr 24
do_mysql-0.2.2.gem 	Dec 23
data_mapper_1.sql 	May 27

Installing DM edge + Merb

Git the code you need

You'll need to either clone the following projects, or download tarballs from github and unpack them. The former is probably a better choice, so that you can pull down updates as work continues on the project.

    * do: git://github.com/sam/do.git
    * dm-core: git://github.com/sam/dm-core.git
    * dm-more: git://github.com/sam/dm-more.git

I'll assume that you're putting all of this stuff into a single common directory, like this:



    mkdir build

    cd build

    git-clone git://github.com/sam/do.git

    ...
Install Merb

The current Merb gems available from Rubyforge are stable, and (now that some plugin issues have been settled) should work fine with the bleeding edge DataMapper.



    sudo gem install merb-core

    sudo gem install merb-more


But, if you want to install edge Merb, too, then you'll need to clone these repositories:

    * merb-core: git://github.com/wycats/merb-core.git
    * merb-more: git://github.com/wycats/merb-more.git

 And build and install the gems from source:



    cd merb-core

    sudo rake gem install

    cd ../merb-more

    sudo rake gem install

If you want to build the additional Merb stuff from source, that's fine (so you have the bleeding edge), but installing that stuff from Rubyforge gems should work.
Build DataObjects

You'll need to build the data_objects gem, and at least one of the database-specific plugins. Don't use do_jdbc yet, as it's still very much a work in progress (so, still no JRuby; sorry). In my case, I picked do_mysql.



    cd do/data_objects

    sudo rake gem install

    cd ../do_mysql

    sudo rake gem install



(You should probably make sure that the mysql_config command is in your PATH before trying to build the do_mysql gem.)
Build DataMapper

More of the same. You shouldn't need to do anything special here.



    cd dm-core

    sudo rake gem install

    cd ../dm-more

    sudo rake gem install
Create Your Application

Now it's time to create the Merb application. If you've done this before with the earlier DataMapper, it still works much like you'd expect:


    merb-gen app sample

    cd sample


Now open up config/init.rb in the application you just generated. Find where the commented-out calls to use_orm are, un-comment the line that says:


    use_orm :datamapper

Now you're ready to generate your first resource code. This'll take two steps: the first time you try, merb-gen will create a sample database configuration file and halt. After you've edited that with the details of your database, running the command again will succeed.


    merb-gen resource widget

    mv config/database.yml.sample config/database.yml

    nano config/database.yml

    merb-gen resource widget

	Version:
3 messages about this page
May 16 2008 by Max
Maybe update this page to include sake instructions?
May 4 2008 by Michael Klishin
2008/5/4 dkubb <dan.kubb@gmail.com>:
People at #merb keep asking about Merb plugin and there's nowhere to
refer them to ;)
May 3 2008 by dkubb
Shouldn't this also provide instructions on installing dm-more/
merb_datamapper?
Report this page
Sign in to discuss

Create a group - Google Groups - Google Home - Terms of Service - Privacy Policy
©2008 Google