diff --git a/front-api/controllers/cart.rb b/front-api/controllers/cart.rb
index 6774025..08a10f9 100644
--- a/front-api/controllers/cart.rb
+++ b/front-api/controllers/cart.rb
@@ -1,9 +1,9 @@
 
-create_the_cart = -> () {
+create_the_cart = lambda do
   # -1 is a placeholder for user id when we implement users
   # auid will still be used in case user is not logged in
   Cart.find_or_create(anonymous_id, logged_in_user_id).to_json
-}
+end
 post '/cart', &create_the_cart
 put  '/cart', &create_the_cart
 
@@ -16,22 +16,19 @@ get '/cart/item' do
   Cart.just_find(anonymous_id, logged_in_user_id).item_in_carts.to_json
 end
 
-update_cart_item = ->() {
+update_cart_item = lambda do
   cart_id = Cart.just_find(anonymous_id, logged_in_user_id).id
-  item_id = @json_params["item_id"].to_i
-  count = @json_params["count"].to_i
+  item_id = @json_params['item_id'].to_i
+  count = @json_params['count'].to_i
   ItemInCart.update_state(cart_id, item_id, count).to_json
-}
+end
 put '/cart/item', &update_cart_item
 post '/cart/item', &update_cart_item
 
-
 # gets list of items in cart without count
 get '/cart/item/display' do
   cart = Cart.just_find(anonymous_id, logged_in_user_id)
-  item_ids = cart.item_in_carts.map do |x|
-    x.item_id
-  end
+  item_ids = cart.item_in_carts.map(&:item_id)
   items = []
   items = Item.find(item_ids) if cart.item_in_carts.length > 0
   prepare_items_for_mass_display(items)
@@ -39,32 +36,32 @@ end
 
 get '/cart/delivery_destination' do
   cart = Cart.just_find(anonymous_id, logged_in_user_id)
-  cart.delivery_destination.to_json(:except => [:created_at, :email_verification_code, :phone_verification_code])
+  cart.delivery_destination.to_json(except: [:created_at, :email_verification_code, :phone_verification_code])
 end
 
-update_delivery_destination = ->() {
+update_delivery_destination = lambda do
   cart = Cart.just_find(anonymous_id, logged_in_user_id)
-  allowed_keys = ["name", "address", "place", "postal_code", "phone", "email", "note", "payment_method", "gift",
-                  "recipient_name", "recipient_address", "recipient_place", "recipient_postal_code", "recipient_phone", "recipient_email"]
+  allowed_keys = %w(name address place postal_code phone email note payment_method gift
+                    recipient_name recipient_address recipient_place recipient_postal_code recipient_phone recipient_email)
 
-  params = @json_params.reject { |key,_| !allowed_keys.include?(key) }
+  params = @json_params.reject { |key, _| !allowed_keys.include?(key) }
   cart.delivery_destination.update_attributes(params)
   cart.delivery_destination.save!
-  cart.delivery_destination.to_json(:except => [:created_at, :email_verification_code, :phone_verification_code])
-}
+  cart.delivery_destination.to_json(except: [:created_at, :email_verification_code, :phone_verification_code])
+end
 put '/cart/delivery_destination', &update_delivery_destination
 post '/cart/delivery_destination', &update_delivery_destination
 
 def report_to_trello(cart)
   Thread.new do
     @cart = cart
-    board = Trello::Board.find(RibicaConfig.TRELLO_BOARD_NAME)
+    board = Trello::Board.find(RibicaConfig::TRELLO_BOARD_NAME)
     list = board.lists.first
     card = Trello::Card.new
     card.list_id = list.id
     card.name = cart.title
-    card.pos = "bottom"
-    card.desc = erb(:cart_trello, :layout => false)
+    card.pos = 'bottom'
+    card.desc = erb(:cart_trello, layout: false)
     card.save
   end
 end
@@ -72,22 +69,21 @@ end
 def send_order_email(cart)
   Thread.new do
     client = SendGrid::Client.new(
-      api_user: RibicaConfig.SENDGRID_API_USER,
-      api_key: RibicaConfig.SENDGRID_API_KEY
+      api_user: RibicaConfig::SENDGRID_API_USER,
+      api_key: RibicaConfig::SENDGRID_API_KEY
     )
 
     email = SendGrid::Mail.new do |m|
-      m.to      = RibicaConfig.BACKOFFICE_ORDER_EMAIL_TO
-      m.from    = RibicaConfig.BACKOFFICE_ORDER_EMAIL_FROM
-      m.from_name = "Prodavnica Ribica"
+      m.to      = RibicaConfig::BACKOFFICE_ORDER_EMAIL_TO
+      m.from    = RibicaConfig::BACKOFFICE_ORDER_EMAIL_FROM
+      m.from_name = 'Prodavnica Ribica'
       m.subject = "Nova Narudžba: #{cart.id}"
-      m.html    = "Mušterija naručila nešto. <br /> Pogledati #{RibicaConfig.ROOT_ADDRESS}/backoffice/carts/#{cart.id}"
+      m.html    = "Mušterija naručila nešto. <br /> Pogledati #{RibicaConfig::ROOT_ADDRESS}/backoffice/carts/#{cart.id}"
     end
     client.send(email)
   end
 end
 
-
 post '/cart/confirmation' do
   anonymous = anonymous_id
   cart = Cart.just_find(anonymous, logged_in_user_id)
@@ -98,48 +94,50 @@ post '/cart/confirmation' do
   # since there is no more ordered cart this needs to be done
   # in order for next call of Cart#just_find to be ready
   Cart.find_or_create(anonymous, logged_in_user_id)
+
   report_to_trello(cart)
   send_order_email(cart)
-  "OK".to_json
+
+  'OK'.to_json
 end
 
 post '/payment/confirmation' do
-   data = JSON.parse params[:custom]
+  data = JSON.parse params[:custom]
 
-   puts "Data #{data.inspect}"
+  puts "Data #{data.inspect}"
 
-   anonymous = data["anonymous_id_string"]
-   user = data["user_id"]
-   user ||= -1
-   user = user.to_i
+  anonymous = data['anonymous_id_string']
+  user = data['user_id']
+  user ||= -1
+  user = user.to_i
 
-   cart = Cart.just_find(anonymous, user)
-   if cart.item_in_carts.length > 0
-     cart.ordered = true
-     cart.save!
-   end
+  cart = Cart.just_find(anonymous, user)
+  if cart.item_in_carts.length > 0
+    cart.ordered = true
+    cart.save!
+  end
 
-   Cart.find_or_create(anonymous, user)
-   report_to_trello(cart)
-   send_order_email(cart)
-   "OK".to_json
+  Cart.find_or_create(anonymous, user)
+  report_to_trello(cart)
+  send_order_email(cart)
+  'OK'.to_json
 end
 
 get '/pikpay/confirmation' do
-   anonymous = params["anonymous_id_string"]
-   user = params["user_id"]
-   user ||= -1
-   user = user.to_i
+  anonymous = params['anonymous_id_string']
+  user = params['user_id']
+  user ||= -1
+  user = user.to_i
 
-   cart = Cart.just_find(anonymous, user)
-   if cart.item_in_carts.length > 0
-     cart.ordered = true
-     cart.save!
-   end
+  cart = Cart.just_find(anonymous, user)
+  if cart.item_in_carts.length > 0
+    cart.ordered = true
+    cart.save!
+  end
 
-   Cart.find_or_create(anonymous, user)
-   report_to_trello(cart)
-   send_order_email(cart)
+  Cart.find_or_create(anonymous, user)
+  report_to_trello(cart)
+  send_order_email(cart)
 
-   redirect "#{RibicaConfig::ROOT_ADDRESS}/hvala"
+  redirect "#{RibicaConfig::ROOT_ADDRESS}/hvala"
 end
diff --git a/front-api/views/cart_trello.erb b/front-api/views/cart_trello.erb
index 8f1bfa4..75b176a 100644
--- a/front-api/views/cart_trello.erb
+++ b/front-api/views/cart_trello.erb
@@ -55,3 +55,4 @@ Dostava
 **UKUPNO:** <%= Helper.money(c.total) %>
 
 [Pogledati OVAJ LINK](https://www.ribica.ba/backoffice/carts/<%= @cart.id %>)
+<% end %>