feat: send booking conf email

app/controllers/bookings_controller.rb

@@ -15,6 +15,7 @@ def create
     @flight = Flight.find(booking_params[:flight_id])
     @booking.number_of_tickets = @booking.passengers.compact.size
     if @booking.save
+      PassengerMailer.with(booking: @booking).booking_confirmation_email.deliver_later
       flash[:notice] = "Booking created!"
       redirect_to @booking
     else

app/mailers/passenger_mailer.rb

@@ -4,10 +4,14 @@ class PassengerMailer < ApplicationMailer
 
   # confirmation email to be sent after a booking is made
   def booking_confirmation_email
-    @passengers = @booking.passengers
+    @booking = params[:booking]
     @url = booking_url(@booking)
+    @passengers = @booking.passengers
+    @flight = @booking.flight
+    debugger
     @passengers.each do |passenger|
-      mail(to: passenger.email, subject: "Booking Confirmation | flight ##{@booking.flight.id}")
+      @passenger = passenger
+      mail(to: passenger.email, subject: "Booking Confirmation | flight ##{@flight.id}")
     end
   end
 end

app/views/passenger_mailer/booking_confirmation_email.html.erb

@@ -9,7 +9,7 @@
   </ul>
   <br>
   <p>
-    You can view your booking <%= link_to "here", show_booking_url(@booking) %>.
+    You can view your booking <%= link_to "here", @url %>.
   </p>
   <p>Thank you for booking with us. We look forward to seeing you on board.</p>
 </div>

app/views/passenger_mailer/booking_confirmation_email.text.erb

@@ -5,5 +5,5 @@ Flight number: <%= @flight.id %>
 Departure: <%= @flight.departure_airport.code %>
 Arrival: <%= @flight.arrival_airport.code %>
 Departure time: <%= @flight.departure_time %>
-You can view your booking <%= link_to "here", show_booking_url(@booking) %>.
+You can view your booking <%= link_to "here", @url %>.
 Thank you for booking with us. We look forward to seeing you on board.