Editorial
Models
In a Ruby on Rails application, the models are classes that generally represent tables in the database. Each model class inherits a rich set of capabilities from the Active Record library. You can then add associations with other tables, validation requirements for data going into the database, and methods to provide the business logic associated with the model. Thus, the model class encapsulates all the information about working with the application's data, independent of how it is presented.Articles
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from around the Web
-
acts_as_ferret not working at all
Work-around for using STI with acts_as_ferret and ferret Gem
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AUTO_INCREMENT MySQL
Work-around to problem of adding an alternate starting value for auto increment if IDs in your tables. Bug exists in MySQL.
- Using FIND Methods in RAILS::ACTIVERECORD
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Helping ActiveRecord finders help you
Modifying the find method to deal with special attribute values.
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HasFinder -- It's Now Easier than ever to create complex, re-usable SQL queries
HasFinder is a plug-in that simplifies the creation and use of custom finders.
- Sharing Code Between ActiveRecord Models
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The Rails Way: AssetsGraphed: Part 1
Reconsidering the number of models.
- The Rails Way: Named Callbacks
- Two-way HABTM self-referential relationships
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Screencasts (10)
- Railscasts - Optimistic Locking
- Railscasts - Create Model Through Text Field
- Railscasts - Two Many-to-Many
- Railscasts - Conditional Validations
- Railscasts - Counter Cache Column
- Railscasts - Virtual Attributes
- Railscasts - Performing Calculations on Models
- Railscasts - Dangers of Model in Session
- Railscasts - Hacking ActiveRecord
- Railscasts - HABTM Checkboxes
Software (4)
- annotate_models plugin
Provides a rake tasks that adds comments to all your models listing the database columns. - RubyForge: Acts As Ordered Tree: Project Info
- validates_email_format_of
Plugin to provide a validation for email address formats. - Savvication: Email Veracity Plugin
Plugin for validating email addresses using the existence of an MX record as the test.
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