On interdit les "/" dans les tags

Fix #383

src/agenda_culturel/forms.py

@@ -264,7 +264,10 @@ class CategorisationRuleImportForm(ModelForm):
 
 class MultipleChoiceFieldAcceptAll(MultipleChoiceField):
     def validate(self, value):
-        pass
+        # check if each element is without "/"
+        for item in value:
+            if "/" in item:
+                raise ValidationError(_("The '/' character is not allowed."))
 
 
 class EventForm(GroupFormMixin, ModelForm):

src/agenda_culturel/migrations/0163_alter_tag_name.py

@@ -0,0 +1,25 @@
+# Generated by Django 4.2.19 on 2025-04-03 19:36
+
+import agenda_culturel.models
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("agenda_culturel", "0162_siteconfiguration_site_url"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="tag",
+            name="name",
+            field=models.CharField(
+                help_text="Tag name",
+                max_length=512,
+                unique=True,
+                validators=[agenda_culturel.models.no_slash_validator],
+                verbose_name="Name",
+            ),
+        ),
+    ]

src/agenda_culturel/models.py

@@ -49,6 +49,7 @@ from django.db.models.expressions import RawSQL
 from django.templatetags.static import static
 from django.conf import settings
 from solo.models import SingletonModel
+from django.core.exceptions import ValidationError
 
 from .calendar import CalendarDay
 from .import_tasks.extractor import Extractor
@@ -64,6 +65,11 @@ logger = logging.getLogger(__name__)
 to_be_translated = [_("mean"), _("median"), _("maximum"), _("minimum"), _("stdev")]
 
 
+def no_slash_validator(value):
+    if "/" in value:
+        raise ValidationError(_("The '/' character is not allowed."))
+
+
 class SiteConfiguration(SingletonModel):
     site_name = models.CharField(
         verbose_name=_("Site name"), max_length=255, default="Pommes de lune"
@@ -318,6 +324,7 @@ class Tag(models.Model):
         help_text=_("Tag name"),
         max_length=512,
         unique=True,
+        validators=[no_slash_validator],
     )
 
     description = CKEditor5Field(