pass paid value as hash, improve code reviews

app/controllers/conference_registrations_controller.rb

@@ -28,8 +28,8 @@ class ConferenceRegistrationsController < ApplicationController
   end
 
   def show
-    @total_price = Ticket.total_price(@conference, current_user, true)
-    @tickets = current_user.ticket_purchases.where(conference_id: @conference.id)
+    @total_price = Ticket.total_price(@conference, current_user, :paid => true)
+    @tickets = current_user.ticket_purchases.where(conference_id: @conference.id, paid: true)
     @ticket_payments = @tickets.group_by(&:payment_id)
   end
 

app/controllers/payments_controller.rb

@@ -9,20 +9,18 @@ class PaymentsController < ApplicationController
   end
 
   def new
-    @total_amount_to_pay = Ticket.total_price(@conference, current_user, false)
+    @total_amount_to_pay = Ticket.total_price(@conference, current_user, paid: false)
   end
 
   def create
     @payment = Payment.new(payment_params)
-    @total_amount_to_pay = Ticket.total_price(@conference, current_user, false)
+    @total_amount_to_pay = Ticket.total_price(@conference, current_user, paid: false)
 
-    if @payment.valid? && @payment.purchase(current_user, @conference, price_in_cents)
-      if @payment.save
-        update_paid_ticket_purchases(@conference, current_user, @payment)
-        redirect_to conference_conference_registrations_path(@conference.short_title), flash: { success: 'Thanks! You have purchased your tickets successfully.' }
-      else
-        render 'new'
-      end
+    if @payment.valid? && @payment.purchase(current_user, @conference, price_in_cents) && @payment.save
+      update_paid_ticket_purchases(@conference, current_user, @payment)
+      redirect_to conference_conference_registrations_path(@conference.short_title), flash: { success: 'Thanks! You have purchased your tickets successfully.' }
+    else
+      render 'new'
     end
   end
 
@@ -36,12 +34,10 @@ class PaymentsController < ApplicationController
     paid_ticket_purchases = TicketPurchase.where(conference_id: conference.id,
                                                  user_id: user.id,
                                                  paid: false)
-    begin
-      paid_ticket_purchases.each do |ticket|
-        ticket.paid = true
-        ticket.payment_id = payment.id
-        ticket.save
-      end
+    paid_ticket_purchases.each do |ticket|
+      ticket.paid = true
+      ticket.payment_id = payment.id
+      ticket.save
     end
   end
 

app/models/ticket.rb

@@ -21,11 +21,11 @@ class Ticket < ActiveRecord::Base
     ticket_purchases.find_by(user: user, paid: true).present?
   end
 
-  def quantity_bought_by(user, paid)
-    result = ticket_purchases.where(user_id: user.id, paid: paid)
+  def quantity_bought_by(user, hashed_paid)
+   purchased_tickets = ticket_purchases.where(user_id: user.id, paid: hashed_paid[:paid])
     quantity = 0
-    if result
-      result.each do |ticket|
+    if purchased_tickets
+      purchased_tickets.each do |ticket|
         quantity += ticket.quantity
       end
     end
@@ -36,16 +36,16 @@ class Ticket < ActiveRecord::Base
     ticket_purchases.find_by(user: user, paid: false).present?
   end
 
-  def total_price(user, paid)
-    quantity_bought_by(user, paid) * price
+  def total_price(user, hashed_paid)
+    quantity_bought_by(user, hashed_paid) * price
   end
 
-  def self.total_price(conference, user, paid)
+  def self.total_price(conference, user, hashed_paid)
     tickets = Ticket.where(conference_id: conference.id)
     result = nil
     begin
       tickets.each do |ticket|
-        price = ticket.total_price(user, paid)
+        price = ticket.total_price(user, hashed_paid)
         if result
           result +=  price unless price.zero?
         else

app/views/payments/index.html.haml

@@ -5,7 +5,7 @@
         %h1
           Payment Attempts for
           = @conference.title
-      - if !flash[:notice].blank?
+      - if flash[:notice].present?
         .alert.alert-success
           = flash[:notice]
       %table.table.table-bordered.table-striped