`BaseMailerPreview.welcome` is an instance method, so we need to stub the
method on a instance level and not on Class. The stub is important to make
sure the Message object is the same in the other expectations.
This was working randomly because Mocha uses == to compare two objects
on the `with()` expectation and even if the Mail::Message objects were
not the same object they are equal, but thats not the case in 100% of
the runs. So we need to make sure we use `.any_instance` method and have
the right message object.
This method return `Gem::Version.new(Rails.version)`, suggesting a more
reliable way to perform version comparison.
Example:
Rails.version #=> "4.1.2"
Rails.gem_version #=> #<Gem::Version "4.1.2">
Rails.version > "4.1.10" #=> false
Rails.gem_version > Gem::Version.new("4.1.10") #=> true
Gem::Requirement.new("~> 4.1.2") =~ Rails.gem_version #=> true
This was originally introduced as `.version` by @charliesome in #8501
but got reverted in #10002 since it was not backward compatible.
Also, updating template for `rake update_versions`.
We allow the use of underscored symbols to represent classes throughout
other parts of Rails so it seems incongruous that it's not supported in
`register_interceptor` and `register_observer`.
Since preview_path is read from ActionMailer::Base when previewing, subclasses
can’t change it so don’t there's no need for the extra overhead imposed by using it.
To support the ability for tools like CSS style inliners to operate on emails
being previewed this commit adds a hook in a similar fashion to the existing
delivery interceptor hook, e.g:
class CSSInlineStyler
def self.previewing_email(message)
# inline CSS styles
end
end
ActionMailer::Base.register_preview_interceptor CSSInlineStyler
Fixes#13622.
Only config.autoload_paths is frozen, so add the preview_path
to ActiveSupport::Dependencies.autoload_paths directly in an
after_initialize block. Also protect against a blank preview_path
being added to autoload_paths which can cause a serious slowdown
as Dir[] tries to load all *_preview.rb files under /
Fixes#13372
The processing of outbound mail is instrumented with the key
`process.action_mailer`. The payload includes the mailer name as well as
the mailer method.
