Move Payment model to new payments app

Redo migrations

Move pages and admin to payments app

Adjust and add tests

Update docs and fix codestyle

Fix migrations

docs/modules.rst

@@ -14,6 +14,7 @@ website
    merchandise
    newsletters
    partners
+   payments
    photos
    pizzas
    pushnotifications

docs/payments.rst

+payments package
+================
+
+.. automodule:: payments
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+Submodules
+----------
+
+payments\.admin module
+----------------------
+
+.. automodule:: payments.admin
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+payments\.models module
+-----------------------
+
+.. automodule:: payments.models
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+payments\.services module
+-------------------------
+
+.. automodule:: payments.services
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+payments\.urls module
+---------------------
+
+.. automodule:: payments.urls
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+payments\.views module
+----------------------
+
+.. automodule:: payments.views
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+

docs/registrations.rst

@@ -64,6 +64,14 @@ registrations\.services module
     :undoc-members:
     :show-inheritance:
 
+registrations\.signals module
+-----------------------------
+
+.. automodule:: registrations.signals
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
 registrations\.urls module
 --------------------------
 

website/payments/admin.py

+from django.contrib import admin, messages
+from django.contrib.admin.utils import model_ngettext
+from django.utils.translation import ugettext_lazy as _
+
+from payments import services
+from .models import Payment
+
+
+def _show_message(admin, request, n, message, error):
+    if n == 0:
+        admin.message_user(request, error, messages.ERROR)
+    else:
+        admin.message_user(request, message % {
+            "count": n,
+            "items": model_ngettext(admin.opts, n)
+        }, messages.SUCCESS)
+
+
+@admin.register(Payment)
+class PaymentAdmin(admin.ModelAdmin):
+    list_display = ('created_at', 'amount',
+                    'processed', 'processing_date', 'type')
+    list_filter = ('processed', 'amount',)
+    date_hierarchy = 'created_at'
+    fields = ('created_at', 'amount',
+              'type', 'processed', 'processing_date')
+    readonly_fields = ('created_at', 'amount', 'processed',
+                       'type', 'processing_date')
+    actions = ['process_cash_selected', 'process_card_selected']
+
+    def changeform_view(self, request, object_id=None, form_url='',
+                        extra_context=None):
+        obj = None
+        if (object_id is not None and
+                request.user.has_perm('payments.process_payments')):
+            obj = Payment.objects.get(id=object_id)
+            if obj.processed:
+                obj = None
+        return super().changeform_view(
+            request, object_id, form_url, {'payment': obj})
+
+    def get_actions(self, request):
+        actions = super().get_actions(request)
+        if not request.user.has_perm('payments.process_payments'):
+            del(actions['process_cash_selected'])
+            del(actions['process_card_selected'])
+        return actions
+
+    def process_cash_selected(self, request, queryset):
+        if request.user.has_perm('payments.process_payments'):
+            updated_payments = services.process_payment(
+                queryset, Payment.CASH
+            )
+            self._process_feedback(request, updated_payments)
+    process_cash_selected.short_description = _(
+        'Process selected payments (cash)')
+
+    def process_card_selected(self, request, queryset):
+        if request.user.has_perm('payments.process_payments'):
+            updated_payments = services.process_payment(
+                queryset, Payment.CARD
+            )
+            self._process_feedback(request, updated_payments)
+    process_card_selected.short_description = _(
+        'Process selected payments (card)')
+
+    def _process_feedback(self, request, updated_payments):
+        rows_updated = len(updated_payments)
+        _show_message(
+            self, request, rows_updated,
+            message=_("Successfully processed %(count)d %(items)s."),
+            error=_('The selected payment(s) could not be processed.')
+        )

website/payments/locale/nl/LC_MESSAGES/django.po

+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: \n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2018-02-03 21:31+0100\n"
+"PO-Revision-Date: 2018-02-03 21:32+0100\n"
+"Language: nl\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"Last-Translator: Sébastiaan Versteeg <se_bastiaan@outlook.com>\n"
+"Language-Team: \n"
+"X-Generator: Poedit 2.0.4\n"
+
+#: admin.py:56
+msgid "Process selected payments (cash)"
+msgstr "Verwerk geselecteerde betalingen (contant)"
+
+#: admin.py:65
+msgid "Process selected payments (card)"
+msgstr "Verwerk geselecteerde betalingen (pin)"
+
+#: admin.py:71 tests/test_admin.py:115 tests/test_admin.py:137
+#, python-format
+msgid "Successfully processed %(count)d %(items)s."
+msgstr "%(count)d %(items)s succesvol verwerkt."
+
+#: admin.py:72
+msgid "The selected payment(s) could not be processed."
+msgstr "De geselecteerde betaling(en) konden niet worden verwerkt."
+
+#: models.py:14
+msgid "created at"
+msgstr "aangemaakt op"
+
+#: models.py:20
+msgid "Cash payment"
+msgstr "Contante betaling"
+
+#: models.py:21
+msgid "Card payment"
+msgstr "Pin betaling"
+
+#: models.py:26
+msgid "type"
+msgstr "type"
+
+#: models.py:40
+msgid "processed"
+msgstr "verwerkt"
+
+#: models.py:45
+msgid "processing date"
+msgstr "verwerkingsdatum"
+
+#: models.py:62
+msgid "payment"
+msgstr "betaling"
+
+#: models.py:63
+msgid "payments"
+msgstr "betalingen"
+
+#: models.py:65
+msgid "Process payments"
+msgstr "Verwerk betalingen"
+
+#: templates/admin/payments/change_form.html:12
+msgid "Process (cash payment)"
+msgstr "Verwerk (contant)"
+
+#: templates/admin/payments/change_form.html:13
+msgid "Process (card payment)"
+msgstr "Verwerk (pin)"
+
+#: tests/test_views.py:104 views.py:25
+#, python-format
+msgid "Successfully processed %s."
+msgstr "%s succesvol verwerkt."
+
+#: tests/test_views.py:111 views.py:28
+#, python-format
+msgid "Could not process %s."
+msgstr "%s kon niet worden verwerkt."

website/payments/migrations/0001_initial.py

+# Generated by Django 2.0.1 on 2018-02-03 13:59
+
+from django.db import migrations, models
+import django.utils.timezone
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('registrations', '0005_move_payment_model_to_app'),
+    ]
+
+    state_operations = [
+        migrations.CreateModel(
+            name='Payment',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('created_at', models.DateTimeField(default=django.utils.timezone.now, verbose_name='created at')),
+                ('type', models.CharField(blank=True, choices=[('cash_payment', 'Cash payment'), ('card_payment', 'Card payment')], max_length=20, null=True, verbose_name='type')),
+                ('amount', models.DecimalField(decimal_places=2, max_digits=5)),
+                ('processed', models.BooleanField(default=False, verbose_name='processed')),
+                ('processing_date', models.DateTimeField(blank=True, null=True, verbose_name='processing date')),
+            ],
+            options={
+                'verbose_name': 'payment',
+                'verbose_name_plural': 'payments',
+                'permissions': (('process_payments', 'Process payments'),),
+            },
+        ),
+    ]
+
+    operations = [
+        migrations.SeparateDatabaseAndState(state_operations=state_operations)
+    ]

website/payments/models.py

+import uuid
+
+from django.contrib.contenttypes.models import ContentType
+from django.db import models
+from django.urls import reverse
+from django.utils import timezone
+from django.utils.translation import ugettext_lazy as _
+
+
+class Payment(models.Model):
+
+    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+
+    created_at = models.DateTimeField(_('created at'), default=timezone.now)
+
+    CASH = 'cash_payment'
+    CARD = 'card_payment'
+
+    PAYMENT_TYPE = (
+        (CASH, _('Cash payment')),
+        (CARD, _('Card payment')),
+    )
+
+    type = models.CharField(
+        choices=PAYMENT_TYPE,
+        verbose_name=_('type'),
+        max_length=20,
+        blank=True,
+        null=True,
+    )
+
+    amount = models.DecimalField(
+        blank=False,
+        null=False,
+        max_digits=5,
+        decimal_places=2
+    )
+
+    processed = models.BooleanField(
+        _('processed'),
+        default=False,
+    )
+
+    processing_date = models.DateTimeField(
+        _('processing date'),
+        blank=True,
+        null=True,
+    )
+
+    def save(self, force_insert=False, force_update=False, using=None,
+             update_fields=None):
+        if self.processed and not self.processing_date:
+            self.processing_date = timezone.now()
+        super().save(force_insert, force_update, using, update_fields)
+
+    def get_admin_url(self):
+        content_type = ContentType.objects.get_for_model(self.__class__)
+        return reverse("admin:%s_%s_change" % (
+            content_type.app_label, content_type.model), args=(self.id,))
+
+    class Meta:
+        verbose_name = _('payment')
+        verbose_name_plural = _('payments')
+        permissions = (
+            ('process_payments', _("Process payments")),
+        )

website/payments/services.py

+from .models import Payment
+
+
+def process_payment(queryset, pay_type=Payment.CARD):
+    """
+        Process the payment
+
+        :param queryset: Queryset of payments that should be processed
+        :type queryset: QuerySet[Payment]
+        :param pay_type: Type of the payment
+        :type pay_type: String
+        """
+
+    queryset = queryset.filter(processed=False)
+    data = []
+
+    # This should trigger post_save signals, thus a queryset update
+    # is not appropriate, moreover save() automatically sets
+    # the processing date
+    for payment in queryset:
+        payment.processed = True
+        payment.type = pay_type
+        payment.save()
+
+        data.append(payment)
+
+    return data

website/payments/static/admin/payments/css/forms.scss

+.submit-row a {
+    &.default {
+        text-transform: uppercase;
+    }
+
+    &.button {
+        float: right;
+        padding: 10px 15px;
+        line-height: 15px;
+        margin: 0 0 0 8px;
+    }
+}
+
+.payments-row a.button {
+    &.process {
+        background-color: #79aec8;
+        &:hover, &:active {
+            background-color: #609ab6;
+        }
+    }
+}

website/payments/templates/admin/payments/change_form.html

+{% extends "admin/change_form.html" %}
+{% load i18n admin_urls static compress %}
+
+{% block extrastyle %}
+    {{ block.super }}
+    {% compress css %}<link rel="stylesheet" type="text/x-scss" href="{% static 'admin/payments/css/forms.scss' %}" />{% endcompress %}
+{% endblock %}
+
+{% block submit_buttons_bottom %}
+    {% if payment %}
+    <div class="submit-row payments-row">
+        <a href="{% url 'payments:admin-process' pk=payment.pk type='cash_payment' %}" class="button process">{% trans "Process (cash payment)" %}</a>
+        <a href="{% url 'payments:admin-process' pk=payment.pk type='card_payment' %}" class="button process">{% trans "Process (card payment)" %}</a>
+    </div>
+    {% endif %}
+
+    {{ block.super }}
+{% endblock %}

website/payments/tests/test_admin.py

+from unittest import mock
+from unittest.mock import Mock
+
+from django.contrib import messages
+from django.contrib.admin import AdminSite
+from django.contrib.admin.utils import model_ngettext
+from django.contrib.auth import get_user_model
+from django.contrib.auth.models import Permission
+from django.contrib.contenttypes.models import ContentType
+from django.http import HttpRequest
+from django.test import TestCase, SimpleTestCase, Client, RequestFactory
+from django.urls import reverse
+from django.utils.translation import ugettext_lazy as _
+
+from payments import admin
+from payments.models import Payment
+
+
+class GlobalAdminTest(SimpleTestCase):
+
+    @mock.patch('registrations.admin.RegistrationAdmin')
+    def test_show_message(self, admin_mock):
+        admin_mock.return_value = admin_mock
+        request = Mock(spec=HttpRequest)
+
+        admin._show_message(admin_mock, request, 0, 'message', 'error')
+        admin_mock.message_user.assert_called_once_with(
+            request, 'error', messages.ERROR)
+        admin_mock.message_user.reset_mock()
+        admin._show_message(admin_mock, request, 1, 'message', 'error')
+        admin_mock.message_user.assert_called_once_with(
+            request, 'message', messages.SUCCESS)
+
+
+class PaymentAdminTest(TestCase):
+
+    @classmethod
+    def setUpTestData(cls):
+        cls.user = get_user_model().objects.create_user(
+            username='username',
+            is_staff=True,
+        )
+
+    def setUp(self):
+        self.client = Client()
+        self.client.force_login(self.user)
+        self.factory = RequestFactory()
+        self.site = AdminSite()
+        self.admin = admin.PaymentAdmin(Payment, admin_site=self.site)
+
+        self._give_user_permissions()
+        process_perm = Permission.objects.get(
+            content_type__model='payment',
+            codename='process_payments')
+        self.user.user_permissions.remove(process_perm)
+        self.client.logout()
+        self.client.force_login(self.user)
+
+    def _give_user_permissions(self):
+        content_type = ContentType.objects.get_for_model(Payment)
+        permissions = Permission.objects.filter(
+            content_type__app_label=content_type.app_label,
+        )
+        for p in permissions:
+            self.user.user_permissions.add(p)
+        self.user.save()
+
+        self.client.logout()
+        self.client.force_login(self.user)
+
+    @mock.patch('payments.models.Payment.objects.get')
+    def test_changeform_view(self, payment_get):
+        object_id = 'c85ea333-3508-46f1-8cbb-254f8c138020'
+        payment = Payment.objects.create(pk=object_id,
+                                         processed=False,
+                                         amount=7.5)
+        payment_get.return_value = payment
+
+        response = self.client.get('/admin/payments/payment/add/')
+        self.assertFalse(payment_get.called)
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.context['payment'], None)
+        response = self.client.get('/admin/payments/payment/{}/change/'
+                                   .format(object_id), follow=True)
+        self.assertFalse(payment_get.called)
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.context['payment'], None)
+
+        self._give_user_permissions()
+
+        response = self.client.get('/admin/payments/payment/{}/change/'
+                                   .format(object_id))
+        self.assertTrue(payment_get.called)
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.context['payment'], payment)
+
+        payment.processed = True
+
+        response = self.client.get('/admin/payments/payment/{}/change/'
+                                   .format(object_id))
+        self.assertTrue(payment_get.called)
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.context['payment'], None)
+
+    @mock.patch('django.contrib.admin.ModelAdmin.message_user')
+    @mock.patch('payments.services.process_payment')
+    def test_process_cash(self, process_payment, message_user):
+        object_id = 'c85ea333-3508-46f1-8cbb-254f8c138020'
+        payment = Payment.objects.create(pk=object_id,
+                                         processed=False,
+                                         amount=7.5)
+        queryset = Payment.objects.filter(pk=object_id)
+        process_payment.return_value = [payment]
+        change_url = reverse('admin:payments_payment_changelist')
+
+        request_noperms = self.client.post(
+            change_url,
+            {'action': 'process_cash_selected',
+             'index': 1,
+             '_selected_action': [object_id]}).wsgi_request
+        self._give_user_permissions()
+        request_hasperms = self.client.post(
+            change_url,
+            {'action': 'process_cash_selected',
+             'index': 1,
+             '_selected_action': [object_id]}).wsgi_request
+
+        process_payment.reset_mock()
+        message_user.reset_mock()
+
+        self.admin.process_cash_selected(request_noperms, queryset)
+        process_payment.assert_not_called()
+
+        self.admin.process_cash_selected(request_hasperms, queryset)
+        process_payment.assert_called_once_with(queryset, Payment.CASH)
+        message_user.assert_called_once_with(
+            request_hasperms,
+            _('Successfully processed %(count)d %(items)s.')
+            % {
+                "count": 1,
+                "items": model_ngettext(Payment(), 1)
+            }, messages.SUCCESS
+        )
+
+    @mock.patch('django.contrib.admin.ModelAdmin.message_user')
+    @mock.patch('payments.services.process_payment')
+    def test_process_card(self, process_payment, message_user):
+        object_id = 'c85ea333-3508-46f1-8cbb-254f8c138020'
+        payment = Payment.objects.create(pk=object_id,
+                                         processed=False,
+                                         amount=7.5)
+        queryset = Payment.objects.filter(pk=object_id)
+        process_payment.return_value = [payment]
+        change_url = reverse('admin:payments_payment_changelist')
+
+        request_noperms = self.client.post(
+            change_url,
+            {'action': 'process_card_selected',
+             'index': 1,
+             '_selected_action': [object_id]}).wsgi_request
+        self._give_user_permissions()
+        request_hasperms = self.client.post(
+            change_url,
+            {'action': 'process_card_selected',
+             'index': 1,
+             '_selected_action': [object_id]}).wsgi_request
+
+        process_payment.reset_mock()
+        message_user.reset_mock()
+
+        self.admin.process_card_selected(request_noperms, queryset)
+        process_payment.assert_not_called()
+
+        self.admin.process_card_selected(request_hasperms, queryset)
+        process_payment.assert_called_once_with(queryset, Payment.CARD)
+        message_user.assert_called_once_with(
+            request_hasperms,
+            _('Successfully processed %(count)d %(items)s.')
+            % {
+                "count": 1,
+                "items": model_ngettext(Payment(), 1)
+            }, messages.SUCCESS
+        )