Allow to use non-proc object in cache_path option

[LTe]

You can use :cache_path option with object that respond to #call method.
Before this patch ActionCacheFilter check that object respond to #call
method and execute #instance_exec on controller instance. It was strange
because #instance_exec method can work only with Proc objects.

When you pass Proc object to :cache_option it will be execute #instance_exec
with this Proc otherwise when object is respond to #call method will be called
on this object.

  class CachePath
    def call(controller)
      controller.id
    end
  end

  class TestController < ApplicationController
    caches_action :index, :cache_path => CachePath.new
    def index; end
  end

[frodsan]

It seems good to me 👍 @rafaelfranca @carlosantoniodasilva WDYT?

[carlosantoniodasilva]

an object.

[carlosantoniodasilva]

How about: If an object that responds to <tt>call</tt> is given, it'll be called with the current controller instance.

[carlosantoniodasilva]

Seems fine I guess. Is it worth to start its own changelog maybe?

[rafaelfranca]

I think is better to release the version 1.0.0 before to pull this in

[frodsan]

1.0.0 is released.

[rafaelfranca]

Right. @frodsan can you merge this in and start the CHANGELOG?

[frodsan]

@rafaelfranca Sure, but what about @carlosantoniodasilva comments?

[rafaelfranca]

You can merge and apply those changes after

[frodsan]

Ok, no problem. @LTe Thanks! 😄