.

djangorota/rota/views.py

@@ -52,11 +52,46 @@ def rota_detail(request, rota_id):
 	except Exception:
 		opt_json = "{}"
 
+	# Build a richer representation of available constraints (default, type, description)
+	available_constraints_rich = {}
+	try:
+		mod = importlib.import_module("rota_generator.shifts")
+		RotaBuilder = getattr(mod, "RotaBuilder")
+		rb = RotaBuilder()
+		opts_model = getattr(rb, "constraint_options_model", None)
+		if opts_model is not None:
+			defaults = opts_model.model_dump()
+			# attempt to get field descriptions from pydantic metadata
+			meta = {}
+			try:
+				meta = opts_model.__class__.model_fields
+			except Exception:
+				meta = {}
+				for k, v in defaults.items():
+					desc = None
+					if isinstance(meta, dict) and k in meta:
+						info = meta[k]
+						if hasattr(info, "description"):
+							desc = info.description
+						else:
+							try:
+								desc = info.get("description")
+							except Exception:
+								desc = None
+					# include the current value saved on the rota (if any)
+					try:
+						current = (rota.options or {}).get(k, v)
+					except Exception:
+						current = v
+					available_constraints_rich[k] = {"default": v, "description": desc, "current": current}
+	except Exception:
+		available_constraints_rich = {k: {"default": v} for k, v in available_constraints.items()}
+
 	options_form = RotaOptionsForm(initial={"options_json": opt_json})
 	return render(
 		request,
 		"rota/rota_detail.html",
-		{"rota": rota, "options_form": options_form, "available_constraints": available_constraints},
+		{"rota": rota, "options_form": options_form, "available_constraints": available_constraints_rich},
 	)
 
 
@@ -384,10 +419,45 @@ def rota_option_add(request, rota_id):
 
 		return redirect("rota:rota_detail", rota_id=rota.id)
 
-	# GET: show modal partial
+	# GET: show modal partial. If a `key` query param is supplied, try to
+	# prefill the value and type from the builder defaults to make adding
+	# standard options easy.
+	key_q = request.GET.get("key")
+	initial = {"key": "", "value": "", "type": "string"}
+	if key_q:
+		try:
+			import importlib
+			mod = importlib.import_module("rota_generator.shifts")
+			RotaBuilder = getattr(mod, "RotaBuilder")
+			rb = RotaBuilder()
+			defaults = rb.constraint_options_model.model_dump()
+			if key_q in defaults:
+				d = defaults[key_q]
+				initial["key"] = key_q
+				if isinstance(d, bool):
+					initial["type"] = "bool"
+					initial["value"] = "1" if d else "0"
+				elif isinstance(d, int):
+					initial["type"] = "int"
+					initial["value"] = str(d)
+				elif isinstance(d, float):
+					initial["type"] = "float"
+					initial["value"] = str(d)
+				elif isinstance(d, (list, dict)):
+					initial["type"] = "json"
+					try:
+						initial["value"] = json.dumps(d)
+					except Exception:
+						initial["value"] = ""
+				else:
+					initial["type"] = "string"
+					initial["value"] = str(d)
+		except Exception:
+			pass
+
 	modal_html = render_to_string(
 		"rota/partials/rota_option_modal_single.html",
-		{"form_action": reverse("rota:rota_option_add", args=(rota.id,)), "initial": {"key": "", "value": "", "type": "string"}, "rota": rota},
+		{"form_action": reverse("rota:rota_option_add", args=(rota.id,)), "initial": initial, "rota": rota},
 		request=request,
 	)
 	return HttpResponse(modal_html)