Persist and show full "path" of seats

src/pretix/base/migrations/0130_auto_20190729_1311.py

@@ -0,0 +1,31 @@
+# Generated by Django 2.2.1 on 2019-07-29 13:11
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+import pretix.base.models.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0129_auto_20190724_1548'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='seat',
+            name='row_name',
+            field=models.CharField(default='', max_length=190),
+        ),
+        migrations.AddField(
+            model_name='seat',
+            name='seat_number',
+            field=models.CharField(default='', max_length=190),
+        ),
+        migrations.AddField(
+            model_name='seat',
+            name='zone_name',
+            field=models.CharField(default='', max_length=190),
+        ),
+    ]

src/pretix/base/models/seating.py

@@ -7,7 +7,7 @@ from django.core.exceptions import ValidationError
 from django.db import models
 from django.utils.deconstruct import deconstructible
 from django.utils.timezone import now
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext, ugettext_lazy as _
 
 from pretix.base.models import Event, Item, LoggedModel, Organizer, SubEvent
 
@@ -39,7 +39,7 @@ class SeatingPlan(LoggedModel):
     layout = models.TextField(validators=[SeatingPlanLayoutValidator()])
 
     Category = namedtuple('Categrory', 'name')
-    RawSeat = namedtuple('Seat', 'name guid number row category')
+    RawSeat = namedtuple('Seat', 'name guid number row category zone')
 
     def __str__(self):
         return self.name
@@ -67,6 +67,7 @@ class SeatingPlan(LoggedModel):
                         guid=s['seat_guid'],
                         name='{} {}'.format(r['row_number'], s['seat_number']),  # TODO: Zone? Variable scheme?
                         row=r['row_number'],
+                        zone=z['name'],
                         category=s['category']
                     )
 
@@ -90,12 +91,24 @@ class Seat(models.Model):
     event = models.ForeignKey(Event, related_name='seats', on_delete=models.CASCADE)
     subevent = models.ForeignKey(SubEvent, null=True, blank=True, related_name='seats', on_delete=models.CASCADE)
     name = models.CharField(max_length=190)
+    zone_name = models.CharField(max_length=190, blank=True, default="")
+    row_name = models.CharField(max_length=190, blank=True, default="")
+    seat_number = models.CharField(max_length=190, blank=True, default="")
     seat_guid = models.CharField(max_length=190, db_index=True)
     product = models.ForeignKey('Item', null=True, blank=True, related_name='seats', on_delete=models.CASCADE)
     blocked = models.BooleanField(default=False)
 
     def __str__(self):
-        return self.name
+        parts = []
+        if self.zone_name:
+            parts.append(self.zone_name)
+        if self.row_name:
+            parts.append(gettext('Row {number}').format(number=self.row_name))
+        if self.seat_number:
+            parts.append(gettext('Seat {number}').format(number=self.seat_number))
+        if not parts:
+            return self.name
+        return ', '.join(parts)
 
     def is_available(self, ignore_cart=None, ignore_orderpos=None):
         from .orders import Order

src/pretix/base/pdf.py

@@ -239,10 +239,25 @@ DEFAULT_VARIABLES = OrderedDict((
         ) if ev.date_admission else ""
     }),
     ("seat", {
-        "label": _("Seat name"),
-        "editor_sample": _("3, 4-5"),
+        "label": _("Seat: Full name"),
+        "editor_sample": _("Ground floor, Row 3, Seat 4"),
         "evaluate": lambda op, order, ev: str(op.seat if op.seat else _('General admission'))
     }),
+    ("seat_zone", {
+        "label": _("Seat: zone"),
+        "editor_sample": _("Ground floor"),
+        "evaluate": lambda op, order, ev: str(op.seat.zone_name if op.seat else _('General admission'))
+    }),
+    ("seat_row", {
+        "label": _("Seat: row"),
+        "editor_sample": "3",
+        "evaluate": lambda op, order, ev: str(op.seat.row_name if op.seat else "")
+    }),
+    ("seat_number", {
+        "label": _("Seat: seat number"),
+        "editor_sample": 4,
+        "evaluate": lambda op, order, ev: str(op.seat.number if op.seat else "")
+    }),
 ))
 
 

src/pretix/base/services/seating.py

@@ -29,14 +29,27 @@ def generate_seats(event, subevent, plan, mapping):
         s.seat_guid: s for s in
         event.seats.select_related('product').annotate(has_op=Count('orderposition')).filter(subevent=subevent)
     }
+
+    def update(o, a, v):
+        if getattr(o, a) != v:
+            setattr(o, a, v)
+            return True
+        return False
+
     create_seats = []
     if plan:
         for ss in plan.iter_all_seats():
             p = mapping.get(ss.category)
             if ss.guid in current_seats:
                 seat = current_seats.pop(ss.guid)
-                if seat.product != p:
-                    seat.product = p
+                updated = any([
+                    update(seat, 'product', p),
+                    update(seat, 'name', ss.name),
+                    update(seat, 'row_name', ss.row),
+                    update(seat, 'seat_number', ss.number),
+                    update(seat, 'zone_name', ss.zone),
+                ])
+                if updated:
                     seat.save()
             else:
                 create_seats.append(Seat(
@@ -44,6 +57,9 @@ def generate_seats(event, subevent, plan, mapping):
                     subevent=subevent,
                     seat_guid=ss.guid,
                     name=ss.name,
+                    row_name=ss.row,
+                    seat_number=ss.number,
+                    zone_name=ss.zone,
                     product=p,
                 ))