legacy_data

How can you start a rails project on top of a large legacy database … use the legacy_data plugin.

What if the database doesn’t follow Rails/ActiveRecord naming conventions? … not a problem What if there are a lot of tables? … not a problem What about all the information contained in the database already (relationships, constraints, etc) … they are extracted into your models

Usage: script/generate models_from_tables [options]

--table-name [ARG] Only generate models for tables starting with
--table-naming-convention [ARG]
                             Naming convention for tables in the database. Only the wildcard is used when generating the model name

Examples:

script/generate script/generate models_from_tables –table-naming-convention=tb* Generate a model for each table in the database. The tables all start with a tb (i.e. table ‘tbperson’ will generate the model ‘person’)
script/generate script/generate models_from_tables –table-name tbperson Generate a model for the ‘tbperson’ table in the database.

Usage

Create a new rails project with the admin data plugin rails my_application -m gist.github.com/188172.txt
Configure your application to connect to your existing Oracle database. Get the connect connect string from your dba (something like: user/[email protected]:1541/sid.world) and edit your config/database.yml

development:

adapter: oracle_enhanced
database: server.example.com:1541/my_database.world
username: user
password: password

Generate models for all existing tables script/generate models_for_all
Take a look script/server localhost:3000/admin_data

Note on Patches/Pull Requests

Fork the project.
Make your feature addition or bug fix.
Add tests for it. This is important so I don’t break it in a future version unintentionally.
Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but
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bump version in a commit by itself I can ignore when I pull)
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Send me a pull request. Bonus points for topic branches.

legacy_data

Usage

Note on Patches/Pull Requests

Copyright