This fixes an regression where _routes were set incorrectly when the
inheritance chain went from one route namespace (isolated engine or main
app) to another and then back to the original. Because the url_helpers
module was being cached and was being re-included this was not setting
_routes.
This commit solves the issue by detecting that case and redefining
_routes in that case. We could have always performed the redefinition,
but it's a pretty uncommon case, so we might as well only do it when
necessary.
ActiveStorage::BaseController subclasses ActionController::Base.
ActionController::Base has an "inherited" hook set that includes the
routing helpers to any subclass of AC::Base. Since
ActiveStorage::BaseController is a subclass of AC::Base, it will get
routing helpers included automatically. Unfortunately, when the
framework is eagerly loaded, ActiveStorage::BaseController is loaded
*before* the applications routes are loaded which means it attempts to
include an "in flight" module so it gets an exception.
This commit allows a class that's interested in being extended with
routing helpers register itself such that when the routes are finalized,
it will get the helpers included. If the routes are already finalized,
then the helpers get included immediately.
Email does not support relative links since there is no implicit host. Therefore all links inside of emails must be fully qualified URLs. All path helpers are now deprecated. When removed, the error will give early indication to developers to use `*_url` methods instead.
Currently if a developer uses a `*_path` helper, their tests and `mail_view` will not catch the mistake. The only way to see the error is by sending emails in production. Preventing sending out emails with non-working path's is the desired end goal of this PR.
Currently path helpers are mixed-in to controllers (the ActionMailer::Base acts as a controller). All `*_url` and `*_path` helpers are made available through the same module. This PR separates this behavior into two modules so we can extend the `*_path` methods to add a Deprecation to them. Once deprecated we can use this same area to raise a NoMethodError and add an informative message directing the developer to use `*_url` instead.
The module with warnings is only mixed in when a controller returns false from the newly added `supports_relative_path?`.
Paired @sgrif & @schneems
Xavier Noria