Discounts (#2510)

src/pretix/control/forms/discounts.py

@@ -0,0 +1,109 @@
+#
+# This file is part of pretix (Community Edition).
+#
+# Copyright (C) 2014-2020 Raphael Michel and contributors
+# Copyright (C) 2020-2021 rami.io GmbH and contributors
+#
+# This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
+# Public License as published by the Free Software Foundation in version 3 of the License.
+#
+# ADDITIONAL TERMS APPLY: Pursuant to Section 7 of the GNU Affero General Public License, additional terms are
+# applicable granting you additional permissions and placing additional restrictions on your usage of this software.
+# Please refer to the pretix LICENSE file to obtain the full terms applicable to this work. If you did not receive
+# this file, see <https://pretix.eu/about/en/license>.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
+# <https://www.gnu.org/licenses/>.
+#
+from decimal import Decimal
+
+from django import forms
+from django.utils.translation import gettext_lazy as _
+
+from pretix.base.channels import get_all_sales_channels
+from pretix.base.forms import I18nModelForm
+from pretix.base.forms.widgets import SplitDateTimePickerWidget
+from pretix.base.models import Discount
+from pretix.control.forms import ItemMultipleChoiceField, SplitDateTimeField
+
+
+class DiscountForm(I18nModelForm):
+    class Meta:
+        model = Discount
+        localized_fields = '__all__'
+        fields = [
+            'active',
+            'internal_name',
+            'sales_channels',
+            'available_from',
+            'available_until',
+            'subevent_mode',
+            'condition_all_products',
+            'condition_limit_products',
+            'condition_min_count',
+            'condition_min_value',
+            'condition_apply_to_addons',
+            'condition_ignore_voucher_discounted',
+            'benefit_discount_matching_percent',
+            'benefit_only_apply_to_cheapest_n_matches',
+        ]
+        field_classes = {
+            'available_from': SplitDateTimeField,
+            'available_until': SplitDateTimeField,
+            'condition_limit_products': ItemMultipleChoiceField,
+        }
+        widgets = {
+            'subevent_mode': forms.RadioSelect,
+            'available_from': SplitDateTimePickerWidget(),
+            'available_until': SplitDateTimePickerWidget(attrs={'data-date-after': '#id_available_from_0'}),
+            'condition_limit_products': forms.CheckboxSelectMultiple(attrs={
+                'data-inverse-dependency': '<[name$=all_products]',
+                'class': 'scrolling-multiple-choice',
+            }),
+            'benefit_only_apply_to_cheapest_n_matches': forms.NumberInput(
+                attrs={
+                    'data-display-dependency': '#id_condition_min_count',
+                }
+            )
+        }
+
+    def __init__(self, *args, **kwargs):
+        self.event = kwargs['event']
+        super().__init__(*args, **kwargs)
+
+        self.fields['sales_channels'] = forms.MultipleChoiceField(
+            label=_('Sales channels'),
+            required=True,
+            choices=(
+                (c.identifier, c.verbose_name) for c in get_all_sales_channels().values()
+                if c.discounts_supported
+            ),
+            widget=forms.CheckboxSelectMultiple,
+        )
+        self.fields['condition_limit_products'].queryset = self.event.items.all()
+        self.fields['condition_min_count'].required = False
+        self.fields['condition_min_count'].widget.is_required = False
+        self.fields['condition_min_value'].required = False
+        self.fields['condition_min_value'].widget.is_required = False
+
+        if not self.event.has_subevents:
+            del self.fields['subevent_mode']
+
+    def clean(self):
+        d = super().clean()
+        if d.get('condition_min_value') and d.get('benefit_only_apply_to_cheapest_n_matches'):
+            # field is hidden by JS
+            d['benefit_only_apply_to_cheapest_n_matches'] = None
+        if d.get('subevent_mode') == Discount.SUBEVENT_MODE_DISTINCT and d.get('condition_min_value'):
+            # field is hidden by JS
+            d['condition_min_value'] = Decimal('0.00')
+
+        if d.get('condition_min_count') is None:
+            d['condition_min_count'] = 0
+        if d.get('condition_min_value') is None:
+            d['condition_min_value'] = Decimal('0.00')
+        return d