feat: Add django 5.0 support

.github/workflows/test.yml

@@ -14,7 +14,13 @@ jobs:
           django-4.0.txt,
           django-4.1.txt,
           django-4.2.txt,
+          django-5.0.txt,
         ]
+        exclude:
+          - requirements-file: django-5.0.txt
+            python-version: 3.8
+          - requirements-file: django-5.0.txt
+            python-version: 3.9
         os: [
           ubuntu-20.04,
         ]

filer/admin/clipboardadmin.py

@@ -31,7 +31,6 @@ class ClipboardItemInline(admin.TabularInline):
 class ClipboardAdmin(admin.ModelAdmin):
     model = Clipboard
     inlines = [ClipboardItemInline]
-    filter_horizontal = ('files',)
     raw_id_fields = ('user',)
     verbose_name = "DEBUG Clipboard"
     verbose_name_plural = "DEBUG Clipboards"

filer/admin/folderadmin.py

@@ -1288,7 +1288,6 @@ def resize_images(self, request, files_queryset, folders_queryset):
             "breadcrumbs_action": _("Resize images"),
             "to_resize": to_resize,
             "resize_form": form,
-            "cmsplugin_enabled": 'cmsplugin_filer_image' in django_settings.INSTALLED_APPS,
             "files_queryset": files_queryset,
             "folders_queryset": folders_queryset,
             "perms_lacking": perms_needed,

filer/admin/forms.py

@@ -1,6 +1,6 @@
 from django import forms
-from django.conf import settings
 from django.contrib.admin import widgets
+from django.contrib.admin.helpers import AdminForm
 from django.core.exceptions import ValidationError
 from django.db import models
 from django.utils.translation import gettext as _
@@ -9,18 +9,18 @@
 from ..utils.files import get_valid_filename
 
 
-class AsPWithHelpMixin:
-    def as_p_with_help(self):
-        "Returns this form rendered as HTML <p>s with help text formated for admin."
-        return self._html_output(
-            normal_row='<p%(html_class_attr)s>%(label)s %(field)s</p>%(help_text)s',
-            error_row='%s',
-            row_ender='</p>',
-            help_text_html='<p class="help">%s</p>',
-            errors_on_separate_row=True)
+class WithFieldsetMixin:
+    def get_fieldsets(self):
+        return getattr(self, "fieldsets", [
+            (None, {"fields": [field for field in self.fields]})
+        ])
 
+    def admin_form(self):
+        "Returns a class contains the Admin fieldset to show form as admin form"
+        return AdminForm(self, self.get_fieldsets(), {})
 
-class CopyFilesAndFoldersForm(forms.Form, AsPWithHelpMixin):
+
+class CopyFilesAndFoldersForm(forms.Form):
     suffix = forms.CharField(required=False, help_text=_("Suffix which will be appended to filenames of copied files."))
     # TODO: We have to find a way to overwrite files with different storage backends first.
     # overwrite_files = forms.BooleanField(required=False, help_text=_("Overwrite a file if there already exists a file with the same filename?"))
@@ -32,7 +32,7 @@
         return self.cleaned_data['suffix']
 
 
-class RenameFilesForm(forms.Form, AsPWithHelpMixin):
+class RenameFilesForm(WithFieldsetMixin, forms.Form):
     rename_format = forms.CharField(required=True)
 
     def clean_rename_format(self):
@@ -55,24 +55,26 @@
         return self.cleaned_data['rename_format']
 
 
-class ResizeImagesForm(forms.Form, AsPWithHelpMixin):
-    if 'cmsplugin_filer_image' in settings.INSTALLED_APPS:
-        thumbnail_option = models.ForeignKey(
-            ThumbnailOption,
-            null=True,
-            blank=True,
-            verbose_name=_("thumbnail option"),
-            on_delete=models.CASCADE,
-        ).formfield()
+class ResizeImagesForm(WithFieldsetMixin, forms.Form):
+    fieldsets = ((None, {"fields": (
+        "thumbnail_option",
+        ("width", "height"),
+        ("crop", "upscale"))}),)
+
+    thumbnail_option = models.ForeignKey(
+        ThumbnailOption,
+        null=True,
+        blank=True,
+        verbose_name=_("thumbnail option"),
+        on_delete=models.CASCADE,
+    ).formfield()
+
     width = models.PositiveIntegerField(_("width"), null=True, blank=True).formfield(widget=widgets.AdminIntegerFieldWidget)
     height = models.PositiveIntegerField(_("height"), null=True, blank=True).formfield(widget=widgets.AdminIntegerFieldWidget)
     crop = models.BooleanField(_("crop"), default=True).formfield()
     upscale = models.BooleanField(_("upscale"), default=True).formfield()
 
     def clean(self):
         if not (self.cleaned_data.get('thumbnail_option') or ((self.cleaned_data.get('width') or 0) + (self.cleaned_data.get('height') or 0))):
-            if 'cmsplugin_filer_image' in settings.INSTALLED_APPS:
-                raise ValidationError(_('Thumbnail option or resize parameters must be choosen.'))
-            else:
-                raise ValidationError(_('Resize parameters must be choosen.'))
+            raise ValidationError(_('Thumbnail option or resize parameters must be choosen.'))
         return self.cleaned_data