Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

[5528 state:committed]

[5528]
Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

order that is declared first has highest priority in all cases.

Here are some examples.

Car.order('name desc').find(:first, :order => 'id').name

Car.named_scope_with_order.named_scope_with_another_order

Car.order('id DESC').scoping do
  Car.find(:first, :order => 'id asc')
end

No special treatment to with_scope or scoping.

Also note that if default_scope declares an order then the order
declared in default_scope has the highest priority unless
with_exclusive_scope is used.
Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

His work brings several capabilities from app to engines, as routes, middleware stack, asset handling and much more. Please check Rails::Engine documentation for more refenrences.

Merge remote branch 'drogus/engines'

Do not use ActionController::Base.page_cache_extension in initialize to not load more ActiveSupport than we need

Add possibility to explicitly call engine's routes through polymorphic_routes, for example: polymorphic_url([blog, @post])

Updated tests to use scope(:module => :engine_name) instead of namespace and updated mounted engine tests to actually use the namespacing

Set only helpers_path on inherited hook in action_controller/railtie.rb and use helper(:all) just after that

This change is needed, because we must take namespace into account and if
controller's/mailer's class is namespaced, engine's paths should be set
instead of application's ones.

The nice side effect of this is removing unneeded logic in
ActionController::Base.inherited - now the helpers_path should be set
correctly even for engine's controllers, so helper(:all) will always
include correct helpers.

This change allows using namespaced models with polymorphic_url,
in the way that you would use them without namespace.

Let's say that you have Blog::Post model in namespaced Engine. When you use
polymorphic_path with Blog::Post instances, like in form_for(@post),
it will look for blog_posts_path named url helper. As we are inside Blog::Engine,
it's annoying to always use the prefix. With this commit, blog_ prefix will be
removed and posts_path will be called.

Get rid of static_paths method and instead configure paths for ActionDispatch::Static in initializers