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Anonymous Scopes
The scoped method allows you to generate named scopes on the fly. In this episode I show how to use anonymous scopes to improve the conditional logic which was used in the previous episode on advanced search form.
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Advanced Search Form
If you need to create an advanced search with a lot of fields, it may not be ideal to use a GET request as I showed in episode 37. In this episode I will show you how to handle this by creating a Search resource
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named_scope
The named_scope method in Rails 2.1 makes performing finds on models very elegant and convenient. See how in this episode.
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More on ActiveResource
See how to handle authentication and custom actions using ActiveResource in this episode.
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ActiveResource Basics
ActiveResource allows you to easily communicate between multiple Rails applications. See how in this episode.
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Hacking ActiveRecord
Have you ever wanted to temporarily disable all validations? Well, ActiveRecord doesn't support this, but that doesn't mean we can't add it. This episode will show you how to open up an existing class and change its behavior.
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Optimistic Locking
When two people attempt to update the same record near the same time, one of the updates will likely be overwritten. You can solve this problem with optimistic locking.
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Performing Calculations on Models
Did you know ActiveRecord provides class methods for performing calculations on models? You can even use these methods through associations.
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