In older rails versions there was a way to use only helpers from
helper file corresponding to current controller and you could also
include all helpers by saying 'helper :all' in controller. This config
allows to return to older behavior by setting it to false.

Pass the view object as parameter to the handler. Useful if you need to access the lookup context or other information when compiling the template.

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

[#5997 state:resolved]
Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

reloading an association will properly set attributes of instantiated objects. Thanks Brian Palmer [#5802 state:resolved]

There is no good way now to run migrations for mounted engine in test application,
but that way of running migrations makes it really hard to run
engine in development mode and test it (you need to copy migrations
in dev mode and in that case in tests they will be run twice).
Signed-off-by: NJosé Valim <jose.valim@gmail.com>