Enhance boarding poass processes

* Add a note about the creation date of boarding pass
* Add a link to ticket review page
* Try to handle some of the expected errors in the boarding pass
  sending process
* don't just 502, try to handle the error and move on.

vendor/regidesk/regidesk/templates/regidesk/boardingpass.html

@@ -12,9 +12,13 @@
 {% ticket_type as ticket_type %}
 
 {% block header_title %}
-    <h1>Boarding Pass for {{ attendee.user.email }}</h1>
+<h1>Boarding Pass for {{ attendee.user.email }}</h1>
+<div class="panel panel-info">
+    <p>This boarding pass was prepared at {{ boardingpass.created }} and was correct at that time.</p>
+    <p>For an up-to-date list of paid/unpaid items please see <a href="/tickets/review">this review page.</a></p>
+</div>
 {% endblock %}
 
 {% block body %}
-    <div>{{ boardingpass|safe }}</div>
+    <div>{{ boardingpass_body|safe }}</div>
 {% endblock %}

vendor/regidesk/regidesk/views.py

@@ -50,14 +50,15 @@ def boardingpass(request):
             return redirect('/tickets/review')
         prepare_boarding_pass(request, templates[0])
 
-    boardingpass = checkin.boardingpass.html_body
+    boardingpass = checkin.boardingpass
     qrcode_url = request.build_absolute_uri(reverse("regidesk:checkin_png", args=[checkin.code]))
     qrcode = checkin.qrcode
     qrcode_string ='<img src="data:image/png;base64,' + qrcode + '"/>'
     not_qrcode_string = '<img src="cid:qrcode.png"/>'
 
-    boardingpass = boardingpass.replace(not_qrcode_string, qrcode_string)
+    boardingpass_body = boardingpass.html_body.replace(not_qrcode_string, qrcode_string)
     ctx = { 'attendee': user.attendee,
+            'boardingpass_body': boardingpass_body,
             'boardingpass': boardingpass
     }
 
@@ -126,19 +127,28 @@ def boarding_prepare(request):
         for pk in request.POST.getlist("_selected_action"):
             attendee_pks.append(int(pk))
     except ValueError:
-        return HttpResponseBadRequest()
+        messages.warning(request, ValueError)
+        return redirect("/checkin/overview")
     attendees = people.Attendee.objects.filter(pk__in=attendee_pks)
     attendees = attendees.select_related(
         "user", "attendeeprofilebase", "attendeeprofilebase__attendeeprofile")
 
+    try:
         sample_checkin = CheckIn.objects.get_or_create(user=attendees[0].user)[0]
+    except:
+        messages.warning(request, "Couldn't find a sample checking - did you add a user?")
+        return redirect("/checkin/overview")
+
     rendered_template = {}
     sample_ctx = {}
 
     bp_template_pk = request.POST.get("template", "")
-    if bp_template_pk:
-        bp_template = BoardingPassTemplate.objects.get(pk=bp_template_pk)
+    if not bp_template_pk:
+        messages.warning(request, "Need to choose a template")
+        return redirect("/checkin/overview")
 
+    bp_template = BoardingPassTemplate.objects.get(pk=bp_template_pk)
+    if bp_template:
         sample_ctx = {
             "user": sample_checkin.user,
             "boardingpass": sample_checkin.boardingpass,
@@ -156,9 +166,10 @@ def boarding_prepare(request):
         subject = Template(bp_template.subject).render(ctx)
         rendered_template['plain'] = Template(bp_template.body).render(ctx)
         rendered_template['html'] = Template(bp_template.html_body).render(ctx)
+        request.session['template'] = bp_template.pk
     else:
-        bp_template = None
         subject = None
+        request.session['template'] = None
 
     ctx = {
         "attendees": attendees,
@@ -171,10 +182,7 @@ def boarding_prepare(request):
 
     request.session.set_expiry=(300)
     request.session['boarding_attendees'] = attendee_pks
-    request.session['template'] = bp_template.pk
-    response = render(request, "regidesk/boardingpass_prepare.html", ctx)
-
-    return response
+    return render(request, "regidesk/boardingpass_prepare.html", ctx)
 
 def prepare_boarding_pass(request, template, attendee=None):
 
@@ -217,7 +225,7 @@ def prepare_boarding_pass(request, template, attendee=None):
     user.checkin.boardingpass = bpass
     user.checkin.save()
 
-    return body, html_body
+    return bpass
 
 @permission_required("regidesk.send_boarding_pass")
 def boarding_send(request):
@@ -232,6 +240,7 @@ def boarding_send(request):
     attendees = attendees.select_related(
                 "user", "attendeeprofilebase", "attendeeprofilebase__attendeeprofile")
 
+    logging.debug(len(attendees))
     logging.debug(attendees)
 
     template_pk = request.session['template']
@@ -239,8 +248,9 @@ def boarding_send(request):
 
     for attendee in attendees:
 
-        body, html_body = prepare_boarding_pass(attendee, template)
-
+        try:
+            user = attendee.user
+            bpass = prepare_boarding_pass(request, template, attendee)
             msg = EmailMultiAlternatives(
                 bpass.subject,
                 bpass.body,
@@ -249,9 +259,8 @@ def boarding_send(request):
             )
             msg.content_subtype="plain"
             msg.mixed_subtype="related"
-        if html_body:
-            msg.attach_alternative(html_body, "text/html")
-
+            if bpass.html_body:
+                msg.attach_alternative(bpass.html_body, "text/html")
                 msg.attach(filename="qrcode.png", content=user.checkin.qrcode, mimetype="image/png")
 
             if user in boarding_users:
@@ -260,6 +269,8 @@ def boarding_send(request):
                     bpass.sent = datetime.now()
                     bpass.save()
                     messages.success(request, "Sent boarding pass to %s" % attendee)
+        except:
+            messages.warning(request, "Could not send boarding pass to %s" % attendee)
 
         request.session['boarding_attendees'].remove(attendee.pk)