This is useful when we need to do some work associated to `Current.reset`
but that work depends on the values of the current attributes themselves.
This cannot be done in the supported `resets` callback because when the
block is executed, CurrentAttributes's instance has already been reset.
For symmetry, `after_reset` is defined as alias of `resets`.
In some examples and guides we are recommending to use code like:
```ruby
verified_user = User.find_by(id: cookies.signed[:user_id])
```
My suggestion is to use instead:
```ruby
verified_user = User.find_by(id: cookies.encrypted[:user_id])
```
which invites users to prefer the "newer" encrypted cookies over the
"legacy" signed cookies.
If users added an attribute or otherwise changed a CurrentAttributes subclass
they'd see exceptions on the next page load.
Because `ActiveSupport::CurrentAttributes.current_instances` would keep
references to the old instances from the previous request.
We can fix this by clearing out the `current_attributes` before we unload
constants. Then any change to the model can be autoloaded again since its
slot isn't taken by an old instance.
We'll still have to call reset before we clear so external collaborators,
like Time.zone, won't linger with their current value throughout other code.
* Add ActiveSupport::CurrentAttributes to provide a thread-isolated attributes singleton
* Need to require first
* Move stubs into test namespace.
Thus they won't conflict with other Current and Person stubs.
* End of the line for you, whitespace!
* Support super in attribute methods.
Define instance level accessors in an included module such that
`super` in an overriden accessor works, akin to Active Model.
* Spare users the manual require.
Follow the example of concerns, autoload in the top level Active Support file.
* Add bidelegation support
* Rename #expose to #set. Simpler, clearer
* Automatically reset every instance.
Skips the need for users to actively embed something that resets
their CurrentAttributes instances.
* Fix test name; add tangible name value when blank.
* Try to ensure we run after a request as well.
* Delegate all missing methods to the instance
This allows regular `delegate` to serve, so we don't need bidelegate.
* Properly test resetting after execution cycle.
Also remove the stale puts debugging.
* Update documentation to match new autoreset
