Improved and documented i18n and background tasks

src/pretix/control/forms/__init__.py

@@ -1,62 +1,9 @@
 import os
-from functools import partial
-from itertools import product
 
 from django import forms
-from django.core.exceptions import ValidationError
-from django.db import transaction
-from django.forms import (
-    BaseInlineFormSet, BaseModelFormSet, ModelForm, modelformset_factory,
-)
-from django.forms.widgets import flatatt
-from django.utils.encoding import force_text
-from django.utils.html import format_html
-from django.utils.safestring import mark_safe
 from django.utils.translation import ugettext_lazy as _
 
-from pretix.base.forms import I18nModelForm
-from pretix.base.models import Item, ItemVariation
-
-
-class I18nInlineFormSet(BaseInlineFormSet):
-    """
-    This is equivalent to a normal BaseInlineFormset, but cares for the special needs
-    of I18nForms (see there for more information).
-    """
-
-    def __init__(self, *args, **kwargs):
-        self.event = kwargs.pop('event', None)
-        super().__init__(*args, **kwargs)
-
-    def _construct_form(self, i, **kwargs):
-        kwargs['event'] = self.event
-        return super()._construct_form(i, **kwargs)
-
-
-class I18nFormSet(BaseModelFormSet):
-    """
-    This is equivalent to a normal BaseModelFormset, but cares for the special needs
-    of I18nForms (see there for more information).
-    """
-
-    def __init__(self, *args, **kwargs):
-        self.event = kwargs.pop('event', None)
-        super().__init__(*args, **kwargs)
-
-    def _construct_form(self, i, **kwargs):
-        kwargs['event'] = self.event
-        return super()._construct_form(i, **kwargs)
-
-    @property
-    def empty_form(self):
-        form = self.form(
-            auto_id=self.auto_id,
-            prefix=self.add_prefix('__prefix__'),
-            empty_permitted=True,
-            event=self.event
-        )
-        self.add_fields(form, None)
-        return form
+from ...base.forms import I18nModelForm
 
 
 class TolerantFormsetModelForm(I18nModelForm):