add new tickets app

src/tickets/admin.py

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+from django.contrib import admin
+
+from .models import (
+    TicketType,
+    SponsorTicket,
+    DiscountTicket,
+    ShopTicket
+)
+
+
+class BaseTicketAdmin(admin.ModelAdmin):
+    actions = ['generate_pdf']
+    exclude = ['qrcode_base64']
+
+    def generate_pdf(self, request, queryset):
+        for ticket in queryset.all():
+            ticket.generate_pdf()
+    generate_pdf.description = 'Generate PDF for the ticket'
+
+
+@admin.register(TicketType)
+class TicketTypeAdmin(admin.ModelAdmin):
+    pass
+
+
+@admin.register(SponsorTicket)
+class SponsorTicketAdmin(BaseTicketAdmin):
+    pass
+
+
+@admin.register(DiscountTicket)
+class DiscountTicketAdmin(BaseTicketAdmin):
+    pass
+
+
+@admin.register(ShopTicket)
+class ShopTicketAdmin(BaseTicketAdmin):
+    pass

src/tickets/apps.py

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+from django.apps import AppConfig
+
+
+class TicketsConfig(AppConfig):
+    name = 'tickets'

src/tickets/migrations/0001_initial.py

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+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.5 on 2017-08-17 14:22
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('shop', '0047_auto_20170522_1942'),
+        ('camps', '0022_camp_colour'),
+        ('sponsors', '0006_auto_20170715_1110'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='BaseTicket',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('qrcode_base64', models.TextField(blank=True, null=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='TicketType',
+            fields=[
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                ('name', models.TextField()),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+        migrations.CreateModel(
+            name='DiscountTicket',
+            fields=[
+                ('baseticket_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, to='tickets.BaseTicket')),
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                ('price', models.IntegerField(help_text='Price of the discounted ticket (in DKK, including VAT).')),
+            ],
+            options={
+                'abstract': False,
+            },
+            bases=('tickets.baseticket', models.Model),
+        ),
+        migrations.CreateModel(
+            name='ShopTicket',
+            fields=[
+                ('baseticket_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, to='tickets.BaseTicket')),
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                ('name', models.CharField(blank=True, help_text='Name of the person this ticket belongs to. This can be different from the buying user.', max_length=100, null=True)),
+                ('email', models.EmailField(blank=True, max_length=254, null=True)),
+                ('checked_in', models.BooleanField(default=False)),
+                ('order', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='shoptickets', to='shop.Order')),
+                ('product', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='shop.Product')),
+            ],
+            options={
+                'abstract': False,
+            },
+            bases=('tickets.baseticket', models.Model),
+        ),
+        migrations.CreateModel(
+            name='SponsorTicket',
+            fields=[
+                ('baseticket_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, to='tickets.BaseTicket')),
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                ('sponsor', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='sponsors.Sponsor')),
+            ],
+            options={
+                'abstract': False,
+            },
+            bases=('tickets.baseticket', models.Model),
+        ),
+        migrations.AddField(
+            model_name='baseticket',
+            name='camp',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='camps.Camp'),
+        ),
+        migrations.AddField(
+            model_name='baseticket',
+            name='ticket_type',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='tickets.TicketType'),
+        ),
+    ]

src/tickets/models.py

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+import io
+import logging
+import hashlib
+import base64
+import qrcode
+
+from django.db import models
+from django.conf import settings
+from django.core.urlresolvers import reverse_lazy
+from django.utils.translation import ugettext_lazy as _
+
+from utils.models import (
+    UUIDModel,
+    CreatedUpdatedModel
+)
+from shop.pdf import generate_pdf_letter
+
+logger = logging.getLogger("bornhack.%s" % __name__)
+
+
+# TicketType can be full week, one day. etc.
+class TicketType(CreatedUpdatedModel, UUIDModel):
+    name = models.TextField()
+
+    def __str__(self):
+        return '{}'.format(self.name)
+
+
+class BaseTicket(models.Model):
+    qrcode_base64 = models.TextField(null=True, blank=True)
+    ticket_type = models.ForeignKey('TicketType')
+    camp = models.ForeignKey('camps.Camp')
+
+    def save(self, **kwargs):
+        super(BaseTicket, self).save(**kwargs)
+        self.qrcode_base64 = self.get_qr_code()
+        super(BaseTicket, self).save(**kwargs)
+
+    def _get_token(self):
+        return hashlib.sha256(
+            '{_id}{secret_key}'.format(
+                _id=self.pk,
+                secret_key=settings.SECRET_KEY,
+            ).encode('utf-8')
+        ).hexdigest()
+
+    def get_qr_code(self):
+        qr = qrcode.make(
+            self._get_token(),
+            version=1,
+            error_correction=qrcode.constants.ERROR_CORRECT_H
+        ).resize((250, 250))
+        file_like = io.BytesIO()
+        qr.save(file_like, format='png')
+        qrcode_base64 = base64.b64encode(file_like.getvalue())
+        return qrcode_base64
+
+    def get_qr_code_url(self):
+        return 'data:image/png;base64,{}'.format(self.qrcode_base64)
+
+    def generate_pdf(self):
+        generate_pdf_letter(
+            filename='ticket_{}.pdf'.format(self.pk),
+            formatdict={'ticket': self},
+            template='pdf/ticket.html'
+        )
+
+
+class SponsorTicket(BaseTicket, CreatedUpdatedModel, UUIDModel):
+    sponsor = models.ForeignKey('sponsors.Sponsor')
+
+    def __str__(self):
+        return 'SponsorTicket: {}'.format(self.pk)
+
+
+class DiscountTicket(BaseTicket, CreatedUpdatedModel, UUIDModel):
+    price = models.IntegerField(
+        help_text=_('Price of the discounted ticket (in DKK, including VAT).')
+    )
+
+    def __str__(self):
+        return 'DiscountTicket: {}'.format(self.pk)
+
+
+class ShopTicket(BaseTicket, CreatedUpdatedModel, UUIDModel):
+    order = models.ForeignKey('shop.Order', related_name='shoptickets')
+    product = models.ForeignKey('shop.Product')
+
+    name = models.CharField(
+        max_length=100,
+        help_text=(
+            'Name of the person this ticket belongs to. '
+            'This can be different from the buying user.'
+        ),
+        null=True,
+        blank=True,
+    )
+
+    email = models.EmailField(
+        null=True,
+        blank=True,
+    )
+
+    checked_in = models.BooleanField(default=False)
+
+    # overwrite the _get_token method because old tickets use the user_id
+    def _get_token(self):
+        return hashlib.sha256(
+            '{_id}{user_id}{secret_key}'.format(
+                _id=self.pk,
+                user_id=self.order.user.pk,
+                secret_key=settings.SECRET_KEY,
+            ).encode('utf-8')
+        ).hexdigest()
+
+    def __str__(self):
+        return 'Ticket {user} {product}'.format(
+            user=self.order.user,
+            product=self.product
+        )
+
+    def save(self, **kwargs):
+        super(ShopTicket, self).save(**kwargs)
+        self.qrcode_base64 = self.get_qr_code()
+        super(ShopTicket, self).save(**kwargs)
+
+    def get_absolute_url(self):
+        return str(reverse_lazy('shop:ticket_detail', kwargs={'pk': self.pk}))

src/tickets/templates/pdf/ticket.html

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+{% load static from staticfiles %}
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+
+<table style="width:100%;">
+    <tr>
+        <td style="width: 75%;">&nbsp;</td>
+        <td>
+            <h3>
+                {{ ticket.created|date:"b jS, Y" }}<br>
+            </h3>
+        </td>
+    </tr>
+</table>
+<br>
+<h2>{{ ticket.camp.title }} Ticket</h2>
+<h3>Type: {{ ticket.ticket_type }}</h3>
+
+{% if ticket.name %}
+  <h3>Participant: {{ ticket.name }}</h3>
+  <br>
+{% elif ticket.order.user.email %}
+  <h3>Participant: {{ ticket.order.user.email }}</h3>
+  <br>
+{% elif ticket.sponsor %}
+  <h3>Sponsor: {{ ticket.sponsor.name }} </h3>
+  <img src="{{ ticket.sponsor.logo }}"></img>
+{% endif %}
+
+<center>
+  <img src="{{ ticket.get_qr_code_url }}"></img>
+  <p>Ticket #{{ ticket.pk }}</p>
+</center>

src/tickets/views.py

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+from django.shortcuts import render
+
+# Create your views here.