lk | adds links to previous and next bikes on bike edit page and removes

bike#show route

app/controllers/bikes_controller.rb

@@ -7,14 +7,16 @@ class BikesController < ApplicationController
     @unsold_bikes = @bikes.select{|bike| bike.date_sold.nil? && bike.purpose == "Sale"}
   end
 
-  def show; end
-
   def new
     @bike = Bike.new
-    @log_number = Bike.order(:log_number).last.log_number + 1
+    @previous_bike = Bike.order(:log_number).last
+    @log_number = @previous_bike.log_number + 1
   end
 
-  def edit; end
+  def edit
+    @next_bike = Bike.where(log_number: @bike.log_number + 1).first
+    @previous_bike = Bike.where(log_number: @bike.log_number - 1).first
+  end
 
   def print_select
     @bikes = Bike.where.not(purpose: "Freecyclery").order(:log_number).reverse_order.paginate(:page => params[:page], :per_page => 30)
@@ -45,7 +47,6 @@ class BikesController < ApplicationController
   end
 
   def update
-
     if @bike.update(bike_params)
       redirect_to @bike, notice: 'Bike was successfully updated.'
     else
@@ -53,11 +54,6 @@ class BikesController < ApplicationController
     end
   end
 
-  def destroy
-    @bike.destroy
-    redirect_to bikes_url
-  end
-
   def mark_as_sold
     current_date = Time.new.strftime("%Y-%m-%d")
     @bike = Bike.find(params[:id])

app/views/bikes/edit.html.haml

@@ -5,6 +5,12 @@
     .col-sm-3.col-sm-offset-3
       =button_to "Mark as sold", {action: "mark_as_sold", id: @bike.id}, method: :patch, class: "btn btn-default"
   = render 'edit_form'
-  = link_to 'Show', @bike
+  - if @next_bike
+    = link_to 'Next Bike', edit_bike_path(@next_bike)
+  - else
+    = link_to 'New Bike', new_bike_path
   |
-  = link_to 'Back', bikes_path
+  = link_to 'All Bikes', bikes_path
+  - if @previous_bike
+    |
+    = link_to 'Previous Bike', edit_bike_path(@previous_bike)

app/views/bikes/new.html.haml

@@ -1,4 +1,6 @@
 .container
   %h1 New bike
   = render 'new_form'
-  = link_to 'Back', bikes_path
+  = link_to 'All Bikes', bikes_path
+  |
+  = link_to 'Previous Bike', edit_bike_path(@previous_bike)