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Understanding Basic Database Relationships in Rails 
This short tutorial will be beneficial for you if database relationships and keywords like belongs_to and has_many confuse you, or if you’re trying to find out how relationships are implemented in Rails. As we create a small demonstration project, yo...
http://biodegradablegeek.com/2007/12/26/understanding-b
asic-database-relationships-in-rails/
asic-database-relationships-in-rails/
by 1 users
Introduction to Validations & Validation Error Handling in Rails
Validations in Ruby on Rails are essentially nothing more than methods that ensure that the data in a model is valid before saving it to the database. Traditionally, we validate data coming in using conditional expressions (for example, if email != N...
http://biodegradablegeek.com/2008/02/08/introduction-to
-validations-validation-error-handling-in-rails/
-validations-validation-error-handling-in-rails/
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