better user home pagination

app/controllers/welcome_controller.rb

@@ -20,12 +20,17 @@ def goodbye
   end
 
   def user_home
-    bikes = current_user.bikes
     page = params[:page] || 1
     @locks_active_tab = params[:active_tab] == 'locks'
     @per_page = params[:per_page] || 20
-    paginated_bikes = Kaminari.paginate_array(bikes).page(page).per(@per_page)
-    @bikes = BikeDecorator.decorate_collection(paginated_bikes)
+    # If there are over 100 bikes created by the user, we'll have problems loading and sorting them
+    if current_user.creation_states.limit(101).count > 100
+      bikes = current_user.rough_approx_bikes.page(page).per(@per_page)
+      @bikes = bikes.decorate
+    else
+      bikes = current_user.bikes.page(page).per(@per_page)
+      @bikes = bikes.decorate
+    end
     @locks = LockDecorator.decorate_collection(current_user.locks)
   end
 

app/models/user.rb

@@ -212,6 +212,10 @@ def bikes(user_hidden=true)
     Bike.unscoped.where(id: bike_ids(user_hidden))
   end
 
+  def rough_approx_bikes # Rough fix for users with large numbers of bikes
+    Bike.includes(:ownerships).where(ownerships: { current: true, user_id: id })
+  end
+
   def bike_ids(user_hidden=true)
     ows = ownerships.where(example: false).where(current: true)
     if user_hidden