### Home Classes Methods

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- lib/authlogic/session/callbacks.rb

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- LICENSE
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No matching classes.

# Authlogic::Session::Callbacks

Between these callsbacks and the configuration, this is the contract between me and you to safely modify Authlogic’s behavior. I will do everything I can to make sure these do not change.

Check out the sub modules of Authlogic::Session. They are very concise, clear, and to the point. More importantly they use the same API that you would use to extend Authlogic. That being said, they are great examples of how to extend Authlogic and add / modify behavior to Authlogic. These modules could easily be pulled out into their own plugin and become an “add on” without any change.

Now to the point of this module. Just like in ActiveRecord you have before_save, before_validation, etc. You have similar callbacks with Authlogic, see the METHODS constant below. The order of execution is as follows:

    before_persisting
    persist
    after_persisting
    [save record if record.changed?]

    before_validation
    before_validation_on_create
    before_validation_on_update
    validate
    after_validation_on_update
    after_validation_on_create
    after_validation
    [save record if record.changed?]

    before_save
    before_create
    before_update
    after_update
    after_create
    after_save
    [save record if record.changed?]

    before_destroy
    [save record if record.changed?]
    destroy
    after_destroy

Notice the “save record if changed?” lines above. This helps with performance. If you need to make changes to the associated record, there is no need to save the record, Authlogic will do it for you. This allows multiple modules to modify the record and execute as few queries as possible.

*WARNING*: unlike ActiveRecord, these callbacks must be set up on the class level:

    class UserSession < Authlogic::Session::Base
      before_validation :my_method
      validate :another_method
      # ..etc
    end

You can NOT define a “before_validation” method, this is bad practice and does not allow Authlogic to extend properly with multiple extensions. Please ONLY use the method above.

### Constants

METHODS

[Validate]

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