Attempt to infer whether path was passed in

Author: VaggelisD

sqlmesh/core/context.py

@@ -885,8 +885,15 @@ def get_model(
                 if normalized_name in self._models:
                     return self._models[normalized_name]
         except:
-            if raise_if_missing:
-                raise SQLMeshError(f"Cannot find model with name '{model_or_snapshot}'")
+            pass
+        
+        if raise_if_missing:
+            if model_or_snapshot.endswith((".sql", ".py")):
+                msg = "Resolving models by path is not supported, please pass in the model name instead."   
+            else:
+                msg = f"Cannot find model with name '{model_or_snapshot}'"
+
+            raise SQLMeshError(msg)
 
         return None
 

tests/core/test_integration.py

@@ -6154,7 +6154,14 @@ def test_render_path_instead_of_model(tmp_path: Path):
     create_temp_file(tmp_path, Path("models/test.sql"), "MODEL (name test_model); SELECT 1 AS col")
     ctx = Context(paths=tmp_path, config=Config())
 
-    with pytest.raises(SQLMeshError, match="Cannot find model with name 'models/test.sql'"):
-        ctx.render("models/test.sql")
+    # Case 1: Fail gracefully when the user is passing in a path instead of a model name
+    for test_model in ["models/test.sql", "models/test.py"]:
+        with pytest.raises(SQLMeshError, match="Resolving models by path is not supported, please pass in the model name instead."):
+            ctx.render(test_model)
 
+    # Case 2: Fail gracefully when the model name is not found
+    with pytest.raises(SQLMeshError, match="Cannot find model with name 'incorrect_model'"):
+        ctx.render("incorrect_model")
+
+    # Case 3: Render the model successfully
     assert ctx.render("test_model").sql() == 'SELECT 1 AS "col"'