Add meta_info to orders

src/pretix/base/migrations/0046_order_meta_info.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.2 on 2016-11-13 12:11
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0045_auto_20161108_1542'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='order',
+            name='meta_info',
+            field=models.TextField(blank=True, null=True, verbose_name='Meta information'),
+        ),
+    ]

src/pretix/base/models/orders.py

@@ -164,6 +164,10 @@ class Order(LoggedModel):
     expiry_reminder_sent = models.BooleanField(
         default=False
     )
+    meta_info = models.TextField(
+        verbose_name=_("Meta information"),
+        null=True, blank=True
+    )
 
     class Meta:
         verbose_name = _("Order")

src/pretix/base/services/orders.py

@@ -1,3 +1,4 @@
+import json
 import logging
 from collections import Counter, namedtuple
 from datetime import datetime, timedelta
@@ -263,7 +264,8 @@ def _check_positions(event: Event, now_dt: datetime, positions: List[CartPositio
 
 @transaction.atomic
 def _create_order(event: Event, email: str, positions: List[CartPosition], now_dt: datetime,
-                  payment_provider: BasePaymentProvider, locale: str=None, address: int=None):
+                  payment_provider: BasePaymentProvider, locale: str=None, address: int=None,
+                  meta_info: dict=None):
     from datetime import date, time
 
     total = sum([c.price for c in positions])
@@ -298,7 +300,8 @@ def _create_order(event: Event, email: str, positions: List[CartPosition], now_d
         locale=locale,
         total=total,
         payment_fee=payment_fee,
-        payment_provider=payment_provider.identifier
+        payment_provider=payment_provider.identifier,
+        meta_info=json.dumps(meta_info or {}),
     )
     OrderPosition.transform_cart_positions(positions, order)
 
@@ -320,7 +323,7 @@ def _create_order(event: Event, email: str, positions: List[CartPosition], now_d
 
 
 def _perform_order(event: str, payment_provider: str, position_ids: List[str],
-                   email: str, locale: str, address: int):
+                   email: str, locale: str, address: int, meta_info: dict=None):
 
     event = Event.objects.get(id=event)
     responses = register_payment_providers.send(event)
@@ -339,7 +342,7 @@ def _perform_order(event: str, payment_provider: str, position_ids: List[str],
             raise OrderError(error_messages['internal'])
         _check_positions(event, now_dt, positions)
         order = _create_order(event, email, positions, now_dt, pprov,
-                              locale=locale, address=address)
+                              locale=locale, address=address, meta_info=meta_info)
 
     if event.settings.get('invoice_generate') == 'True' and invoice_qualified(order):
         if not order.invoices.exists():
@@ -584,10 +587,10 @@ class OrderChangeManager:
 
 @app.task(bind=True, max_retries=5, default_retry_delay=1)
 def perform_order(self, event: str, payment_provider: str, positions: List[str],
-                  email: str=None, locale: str=None, address: int=None):
+                  email: str=None, locale: str=None, address: int=None, meta_info: dict=None):
     try:
         try:
-            return _perform_order(event, payment_provider, positions, email, locale, address)
+            return _perform_order(event, payment_provider, positions, email, locale, address, meta_info)
         except LockTimeoutException:
             self.retry()
     except (MaxRetriesExceededError, LockTimeoutException):

src/pretix/presale/checkoutflow.py

@@ -16,7 +16,7 @@ from pretix.base.services.orders import OrderError, perform_order
 from pretix.base.signals import register_payment_providers
 from pretix.multidomain.urlreverse import eventreverse
 from pretix.presale.forms.checkout import ContactForm, InvoiceAddressForm
-from pretix.presale.signals import checkout_flow_steps
+from pretix.presale.signals import checkout_flow_steps, order_meta_from_request
 from pretix.presale.views import CartMixin, get_cart_total
 from pretix.presale.views.async import AsyncAction
 from pretix.presale.views.questions import QuestionsViewMixin
@@ -335,9 +335,12 @@ class ConfirmStep(CartMixin, AsyncAction, TemplateFlowStep):
 
     def post(self, request):
         self.request = request
+        meta_info = {}
+        for receiver, response in order_meta_from_request.send(sender=request.event, request=request):
+            meta_info.update(response)
         return self.do(self.request.event.id, self.payment_provider.identifier,
                        [p.id for p in self.positions], request.session.get('email'),
-                       translation.get_language(), self.invoice_address.pk)
+                       translation.get_language(), self.invoice_address.pk, meta_info)
 
     def get_success_message(self, value):
         return None

src/pretix/presale/signals.py

@@ -37,6 +37,17 @@ This signal is sent out to display additional information on the "redeem a vouch
 As with all plugin signals, the ``sender`` keyword argument will contain the event.
 """
 
+order_meta_from_request = EventPluginSignal(
+    providing_args=["request"]
+)
+"""
+This signal is sent before an order is created through the pretixpresale frontend. It allows you
+to return a dictionary that will be merged in the meta_info attribute of the order.
+You will recieve the request triggering the order creation as the ``request`` keyword argument.
+
+As with all event-plugin signals, the ``sender`` keyword argument will contain the event.
+"""
+
 order_info = EventPluginSignal(
     providing_args=["order"]
 )