Move url like strings to placeholders for nibe (home-assistant#154249)

Author: elupus

homeassistant/components/nibe_heatpump/config_flow.py

@@ -73,6 +73,13 @@
 )
 
 
+STEP_MODBUS_PLACEHOLDERS = {
+    "tcp": "tcp://[HOST]:[PORT]",
+    "serial": "serial://[LOCAL DEVICE]",
+    "rfc2217": "rfc2217://[HOST]:[PORT]",
+}
+
+
 class FieldError(Exception):
     """Field with invalid data."""
 
@@ -183,7 +190,9 @@ async def async_step_modbus(
         """Handle the modbus step."""
         if user_input is None:
             return self.async_show_form(
-                step_id="modbus", data_schema=STEP_MODBUS_DATA_SCHEMA
+                step_id="modbus",
+                data_schema=STEP_MODBUS_DATA_SCHEMA,
+                description_placeholders=STEP_MODBUS_PLACEHOLDERS,
             )
 
         errors = {}
@@ -200,7 +209,10 @@ async def async_step_modbus(
             return self.async_create_entry(title=title, data=data)
 
         return self.async_show_form(
-            step_id="modbus", data_schema=STEP_MODBUS_DATA_SCHEMA, errors=errors
+            step_id="modbus",
+            data_schema=STEP_MODBUS_DATA_SCHEMA,
+            errors=errors,
+            description_placeholders=STEP_MODBUS_PLACEHOLDERS,
         )
 
     async def async_step_nibegw(

homeassistant/components/nibe_heatpump/strings.json

@@ -15,7 +15,7 @@
           "modbus_unit": "Modbus unit identifier"
         },
         "data_description": {
-          "modbus_url": "Modbus URL that describes the connection to your heat pump or MODBUS40 unit. It should be in the form:\n - `tcp://[HOST]:[PORT]` for Modbus TCP connection\n - `serial://[LOCAL DEVICE]` for a local Modbus RTU connection\n - `rfc2217://[HOST]:[PORT]` for a remote Telnet-based Modbus RTU connection.",
+          "modbus_url": "Modbus URL that describes the connection to your heat pump or MODBUS40 unit. It should be in the form:\n - `{tcp}` for Modbus TCP connection\n - `{serial}` for a local Modbus RTU connection\n - `{rfc2217}` for a remote Telnet-based Modbus RTU connection.",
           "modbus_unit": "Unit identification for your heat pump. Can usually be left at 0."
         }
       },