CODEWITHSUNDEEP
ruby-on-railsrubyrubygems
CambridgeMike
CambridgeMike

Reputation: 4622

Rails: class' object_id changes after I make a request

I really can't explain this behavior, notice how after I make a request the class' object id has changed, and therefore my is_a? evaluation returns false.

any ideas? I'm not even sure how to debug this. Also, this isn't related to making a request from the command line. The same behavior is exhibited on the web server as well, it's just easier to explain from the command line.

staging$ RAILS_ENV=staging script/console
Loading staging environment (Rails 2.3.2)
>> c = CartItem.new
=> #<CartItem id: nil, order_id: nil, order_source: nil, date: nil, user_id: nil, created_at: nil, updated_at: nil, paid: nil, payment_id: nil, values: nil, cart_description: nil, type: nil, price: nil, email: nil, error: nil>
>> c.class.object_id
=> 70151495336400
>> CartItem.object_id
=> 70151495336400
>> c.is_a? CartItem
=> true
>> app = ActionController::Integration::Session.new
=> #<ActionController::Integration::Session:0x7f9ad5c55db0 .... >
>> app.get("site/favorite")
=> 200
>> c.class.object_id
=> 70151495336400
>> CartItem.object_id
=> 70151496019760
>> c.is_a? CartItem
=> false
>> c.class
=> CartItem(id: integer, order_id: string, order_source: string, date: date, user_id: integer, created_at: datetime, updated_at: datetime, paid: boolean, payment_id: integer, values: text, cart_description: string, type: string, price: integer, email: string, error: string)

Upvotes: 2

Views: 721

Answers (2)

mikezter
mikezter

Reputation: 2463

Since the ActionController::Integration module is used for integration testing, getting a url reloads your classes, therefore redefining the CartItem identifier. You now basically have two CartItem classes, one hanging around on your stack without an identifier pointing to it anymore (the "old one") and one referenced by the CartItem identifier.

Upvotes: 1

Jarrett Meyer
Jarrett Meyer

Reputation: 19583

Every new context (request/response cycle) will regenerate the object IDs. You may want to use responds_to?, instead of is_a?.

Upvotes: 1

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