Add Radeln ohne Alter ride-coordination demo (Django + HTMX + Leaflet)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

rides/forms.py

@@ -0,0 +1,57 @@
+from django import forms
+
+from .models import Availability, Ride
+
+_DT = "%Y-%m-%dT%H:%M"
+
+
+class RideForm(forms.ModelForm):
+    """Fahrt anlegen. Koordinaten kommen aus den (per Karte gesetzten) Hidden-Feldern."""
+
+    class Meta:
+        model = Ride
+        fields = [
+            "fahrgast",
+            "scheduled_at",
+            "pickup_label",
+            "pickup_lat",
+            "pickup_lng",
+            "dest_label",
+            "dest_lat",
+            "dest_lng",
+            "note",
+        ]
+        widgets = {
+            "scheduled_at": forms.DateTimeInput(attrs={"type": "datetime-local"}, format=_DT),
+            "note": forms.Textarea(attrs={"rows": 2}),
+            "pickup_lat": forms.HiddenInput(),
+            "pickup_lng": forms.HiddenInput(),
+            "dest_lat": forms.HiddenInput(),
+            "dest_lng": forms.HiddenInput(),
+        }
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.fields["scheduled_at"].input_formats = [_DT]
+
+
+class AvailabilityForm(forms.ModelForm):
+    class Meta:
+        model = Availability
+        fields = ["start", "end"]
+        widgets = {
+            "start": forms.DateTimeInput(attrs={"type": "datetime-local"}, format=_DT),
+            "end": forms.DateTimeInput(attrs={"type": "datetime-local"}, format=_DT),
+        }
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        for name in ("start", "end"):
+            self.fields[name].input_formats = [_DT]
+
+    def clean(self):
+        cleaned = super().clean()
+        start, end = cleaned.get("start"), cleaned.get("end")
+        if start and end and end <= start:
+            raise forms.ValidationError("Das Ende muss nach dem Beginn liegen.")
+        return cleaned