Add warnings when a user needs to register or complete a purchase

app/controllers/conferences_controller.rb

@@ -27,6 +27,10 @@ class ConferencesController < ApplicationController
       redirect_to admin_conference_splashpage_path(@conference.short_title) && return
     end
 
+    # User messages at the top of the page.
+    @unpaid_tickets = current_user_has_unpaid_tickets?
+    @user_needs_to_register = current_user_needs_to_register?
+
     @image_url = "#{request.protocol}#{request.host}#{@conference.picture}"
 
     if splashpage.include_cfp
@@ -79,4 +83,17 @@ class ConferencesController < ApplicationController
       format.html { head :ok }
     end if request.options?
   end
+
+  def current_user_tickets
+    @current_user_tickets ||= current_user.ticket_purchases.by_conference(@conference)
+  end
+
+  def current_user_needs_to_register?
+    current_user && !@conference.user_registered?(current_user) &&
+      current_user_tickets.where(ticket: @conference.registration_tickets).paid.any?
+  end
+
+  def current_user_has_unpaid_tickets?
+    current_user && current_user_tickets.unpaid.any?
+  end
 end

app/models/conference.rb

@@ -116,7 +116,7 @@ class Conference < ApplicationRecord
   # True when there is at least one ticket marked as "registration"
   # A user must get a registration ticket before registering.
   def registration_ticket_required?
-    tickets.for_registration.any?
+    registration_tickets.any?
   end
 
   ##

app/views/conferences/show.html.haml

@@ -16,6 +16,28 @@
 = content_for :title do
   = @conference.title
 
+= content_for :additional_messages do
+  - if @unpaid_tickets
+    .row
+      .col-md-12
+        .alert.alert-dismissable.alert-info.text-center#unpaid-tickets{role: 'alert'}
+          %button.button.close{"data-dismiss" => "alert", "aria-label"=>"close"}
+            ×
+          %p
+            You have unpaid tickets. Please complete your purchase.
+            = link_to('Purchase Tickets', new_conference_payment_path(@conference), class: 'btn btn-success btn-lg')
+
+
+  - if @user_needs_to_register
+    .row
+    .col-md-12
+      .alert.alert-dismissable.alert-warning.text-center#flash{role: 'alert'}
+        %button.button.close{"data-dismiss" => "alert", 'aria-label': 'close'}
+          ×
+        %p
+          You still need to complete your registration for #{@conference.title}.
+          = link_to('Complete Registration', new_conference_conference_registration_path(@conference), class: 'btn btn-success btn-lg')
+
 
 #splash
   - if @conference.code_of_conduct.present?

app/views/layouts/application.html.haml

@@ -30,6 +30,7 @@
       #messages
         .container
           = render 'layouts/messages'
+          = yield :additional_messages
       #content
         = yield