| from django import forms |
| from django.conf import settings |
| from django.contrib.flatpages.models import FlatPage |
| from django.core.exceptions import ValidationError |
| from django.utils.translation import gettext |
| from django.utils.translation import gettext_lazy as _ |
|
|
|
|
| class FlatpageForm(forms.ModelForm): |
| url = forms.RegexField( |
| label=_("URL"), |
| max_length=100, |
| regex=r"^[-\w/\.~]+$", |
| help_text=_( |
| "Example: “/about/contact/”. Make sure to have leading and trailing " |
| "slashes." |
| ), |
| error_messages={ |
| "invalid": _( |
| "This value must contain only letters, numbers, dots, " |
| "underscores, dashes, slashes or tildes." |
| ), |
| }, |
| ) |
|
|
| class Meta: |
| model = FlatPage |
| fields = "__all__" |
|
|
| def __init__(self, *args, **kwargs): |
| super().__init__(*args, **kwargs) |
| if not self._trailing_slash_required(): |
| self.fields["url"].help_text = _( |
| "Example: “/about/contact”. Make sure to have a leading slash." |
| ) |
|
|
| def _trailing_slash_required(self): |
| return ( |
| settings.APPEND_SLASH |
| and "django.middleware.common.CommonMiddleware" in settings.MIDDLEWARE |
| ) |
|
|
| def clean_url(self): |
| url = self.cleaned_data["url"] |
| if not url.startswith("/"): |
| raise ValidationError( |
| gettext("URL is missing a leading slash."), |
| code="missing_leading_slash", |
| ) |
| if self._trailing_slash_required() and not url.endswith("/"): |
| raise ValidationError( |
| gettext("URL is missing a trailing slash."), |
| code="missing_trailing_slash", |
| ) |
| return url |
|
|
| def clean(self): |
| url = self.cleaned_data.get("url") |
| sites = self.cleaned_data.get("sites") |
|
|
| same_url = FlatPage.objects.filter(url=url) |
| if self.instance.pk: |
| same_url = same_url.exclude(pk=self.instance.pk) |
|
|
| if sites and same_url.filter(sites__in=sites).exists(): |
| for site in sites: |
| if same_url.filter(sites=site).exists(): |
| raise ValidationError( |
| _("Flatpage with url %(url)s already exists for site %(site)s"), |
| code="duplicate_url", |
| params={"url": url, "site": site}, |
| ) |
|
|
| return super().clean() |
|
|
