refactor: accounted for Readyset.route

This method will handle the actual routing for us. So we'll mock it
assuming it'll be implemented later.

lib/ready_set/controller_extension.rb

@@ -26,11 +26,8 @@ module ControllerExtension
       def self.route_to_readyset(*actions, **options, &block)
         # Use double splat (**) to pass options as keyword arguments
         around_action(*actions, **options) do |_controller, action_block|
-          # TODO: Decouple the role symbol, have it pull from a dev-configurable location.
-          ActiveRecord::Base.connected_to(role: :replica_db_role) do
-            # Functionally the same as yield, except we're highlighting
-            # that it is action_block being called/yielded.
-            action_block.call # All queries will connect to the replica
+          Readyset.route do
+            action_block.call
           end
         end
       end

spec/controller_extension_spec.rb

@@ -39,6 +39,8 @@ def create
     allow(Post).to receive(:where).and_return([])
     allow(Post).to receive(:find).and_return(nil)
     allow(Post).to receive(:create)
+
+    allow(Readyset).to receive(:route).and_yield
   end
 
   describe '#route_to_readyset' do
@@ -50,23 +52,23 @@ def create
       it 'routes queries to the replica database' do
         # Make sure it's working within the replica "context"
         # and it is executing the queries via yield
-        expect(ActiveRecord::Base).to receive(:connected_to).with(role: :replica_db_role).and_yield
+        expect(Readyset).to receive(:route).and_yield
         get :index
       end
     end
 
     # Check if the options are passing in correctly
     context 'when accessing the show action with :only option' do
       it 'routes queries to the replica database' do
-        expect(ActiveRecord::Base).to receive(:connected_to).with(role: :replica_db_role).and_yield
+        expect(Readyset).to receive(:route).and_yield
         get :show, params: { id: 1 }
       end
     end
 
     # Ensure that non-specified actions aren't getting re-routed
     context 'when accessing an action not included in :only' do
       it 'does not route queries to the replica database' do
-        expect(ActiveRecord::Base).not_to receive(:connected_to).with(role: :replica_db_role)
+        expect(Readyset).not_to receive(:route)
         post :create, params: { post: { title: 'New Post' } }
       end
     end