138 lines
4.9 KiB
Markdown
138 lines
4.9 KiB
Markdown
# CouchRest Model: CouchDB, close to shiny metal with rounded edges
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CouchRest Models adds additional functionality to the standard CouchRest Document class such as
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setting properties, callbacks, typecasting, and validations.
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## Documentation
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Please visit the documentation project at [http://www.couchrest.info](http://www.couchrest.info). You're [contributions](https://github.com/couchrest/couchrest.github.com) to the documentation would be greatly appreciated!
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General API: [http://rdoc.info/projects/couchrest/couchrest_model](http://rdoc.info/projects/couchrest/couchrest_model)
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See the [update history](https://github.com/couchrest/couchrest_model/blob/master/history.md) for an up to date list of all the changes we've been working on recently.
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## Notes
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Originally called ExtendedDocument, the new Model structure uses ActiveModel, part of Rails 3,
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for validations and callbacks.
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If your project is still running Rails 2.3, you'll have to continue using ExtendedDocument as
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it is not possible to load ActiveModel into programs that do not use ActiveSupport 3.0.
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CouchRest Model is only properly tested on CouchDB version 1.0 or newer.
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*WARNING:* As of April 2011 and the release of version 1.1.0, the default model type key is 'type' instead of 'couchrest-type'. Simply updating your project will not work unless you migrate your data or set the configuration option in your initializers:
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CouchRest::Model::Base.configure do |config|
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config.model_type_key = 'couchrest-type'
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end
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This is because CouchRest Model's are not couchrest specific and may be used in any other systems such as Javascript, the model type should reflect this. Also, we're all used to `type` being a reserved word in ActiveRecord.
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## Install
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### Gem
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$ sudo gem install couchrest_model
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### Bundler
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If you're using bundler, define a line similar to the following in your project's Gemfile:
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gem 'couchrest_model'
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### Configuration
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CouchRest Model is configured to work out the box with no configuration as long as your CouchDB instance is running on the default port (5984) on localhost. The default name of the database is either the name of your application as provided by the `Rails.application.class.to_s` call (with /application removed) or just 'couchrest' if none is available.
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The library will try to detect a configuration file at `config/couchdb.yml` from the Rails root or `Dir.pwd`. Here you can configuration your database connection in a Rails-like way:
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development:
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protocol: 'https'
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host: sample.cloudant.com
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port: 443
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prefix: project
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suffix: test
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username: test
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password: user
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Note that the name of the database is either just the prefix and suffix combined or the prefix plus any text you specifify using `use_database` method in your models with the suffix on the end.
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The example config above for example would use a database called "project_test". Heres an example using the `use_database` call:
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class Project < CouchRest::Model::Base
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use_database 'sample'
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end
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# The database object would be provided as:
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Project.database #=> "https://test:user@sample.cloudant.com:443/project_sample_test"
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## Generators
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### Configuration
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$ rails generate couchrest_model:config
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### Model
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$ rails generate model person --orm=couchrest_model
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## General Usage
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require 'couchrest_model'
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class Cat < CouchRest::Model::Base
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property :name, String
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property :lives, Integer, :default => 9
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property :nicknames, [String]
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timestamps!
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view_by :name
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end
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@cat = Cat.new(:name => 'Felix', :nicknames => ['so cute', 'sweet kitty'])
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@cat.new? # true
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@cat.save
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@cat['name'] # "Felix"
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@cat.nicknames << 'getoffdamntable'
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@cat = Cat.new
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@cat.update_attributes(:name => 'Felix', :random_text => 'feline')
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@cat.new? # false
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@cat.random_text # Raises error!
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## Development
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### Preparations
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CouchRest Model now comes with a Gemfile to help with development. If you want to make changes to the code, download a copy then run:
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bundle install
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That should set everything up for `rake spec` to be run correctly. Update the couchrest_model.gemspec if your alterations
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use different gems.
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### Testing
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The most complete documentation is the spec/ directory. To validate your CouchRest install, from the project root directory run `bundle install` to ensure all the development dependencies are available and then `rspec spec` or `bundle exec rspec spec`.
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We will not accept pull requests to the project without sufficient tests.
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## Contact
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Please post bugs, suggestions and patches to the bug tracker at [http://github.com/couchrest/couchrest_model/issues](http://github.com/couchrest/couchrest_model/issues).
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Follow us on Twitter: [http://twitter.com/couchrest](http://twitter.com/couchrest)
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Also, check [http://twitter.com/#search?q=%23couchrest](http://twitter.com/#search?q=%23couchrest)
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