Allow sort by related model field

sqladmin/models.py

@@ -1064,10 +1064,17 @@ def sort_query(self, stmt: Select, request: Request) -> Select:
             sort_fields = self._get_default_sort()
 
         for sort_field, is_desc in sort_fields:
+            model = self.model
+
+            parts = sort_field.split(".")
+            for part in parts[:-1]:
+                model = getattr(model, part).mapper.class_
+                stmt = stmt.join(model)
+
             if is_desc:
-                stmt = stmt.order_by(desc(sort_field))
+                stmt = stmt.order_by(desc(getattr(model, parts[-1])))
             else:
-                stmt = stmt.order_by(asc(sort_field))
+                stmt = stmt.order_by(asc(getattr(model, parts[-1])))
 
         return stmt
 

tests/test_models.py

@@ -3,7 +3,7 @@
 
 import pytest
 from markupsafe import Markup
-from sqlalchemy import Boolean, Column, Enum, ForeignKey, Integer, String
+from sqlalchemy import Boolean, Column, Enum, ForeignKey, Integer, String, select
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import declarative_base, relationship, sessionmaker
 from sqlalchemy.sql.expression import Select
@@ -51,7 +51,7 @@ def name_with_id(self) -> str:
 class Address(Base):
     __tablename__ = "addresses"
 
-    pk = Column(Integer, primary_key=True)
+    id = Column(Integer, primary_key=True)
     user_id = Column(Integer, ForeignKey("users.id"))
 
     user = relationship("User", back_populates="addresses")
@@ -121,9 +121,9 @@ class UserAdmin(ModelView, model=User):
 
 def test_column_list_by_str_name() -> None:
     class AddressAdmin(ModelView, model=Address):
-        column_list = ["pk", "user_id"]
+        column_list = ["id", "user_id"]
 
-    assert AddressAdmin().get_list_columns() == ["pk", "user_id"]
+    assert AddressAdmin().get_list_columns() == ["id", "user_id"]
 
 
 def test_column_list_both_include_and_exclude() -> None:
@@ -242,9 +242,9 @@ class UserAdmin(ModelView, model=User):
 
 def test_form_columns_by_str_name() -> None:
     class AddressAdmin(ModelView, model=Address):
-        form_columns = ["pk", "user_id"]
+        form_columns = ["id", "user_id"]
 
-    assert AddressAdmin().get_form_columns() == ["pk", "user_id"]
+    assert AddressAdmin().get_form_columns() == ["id", "user_id"]
 
 
 def test_form_columns_both_include_and_exclude() -> None:
@@ -299,9 +299,9 @@ class UserAdmin(ModelView, model=User):
 
 def test_export_columns_by_str_name() -> None:
     class AddressAdmin(ModelView, model=Address):
-        column_export_list = ["pk", "user_id"]
+        column_export_list = ["id", "user_id"]
 
-    assert AddressAdmin().get_export_columns() == ["pk", "user_id"]
+    assert AddressAdmin().get_export_columns() == ["id", "user_id"]
 
 
 def test_export_columns_both_include_and_exclude() -> None:
@@ -386,8 +386,8 @@ class AddressAdmin(ModelView, model=Address):
         column_list = "__all__"
         column_details_list = "__all__"
 
-    assert AddressAdmin().get_list_columns() == ["user", "pk", "user_id"]
-    assert AddressAdmin().get_details_columns() == ["user", "pk", "user_id"]
+    assert AddressAdmin().get_list_columns() == ["user", "id", "user_id"]
+    assert AddressAdmin().get_details_columns() == ["user", "id", "user_id"]
 
 
 async def test_get_prop_value() -> None:
@@ -415,3 +415,22 @@ class UserAdmin(ModelView, model=User):
     assert UserAdmin().get_list_columns() == ["id", "name", "name_with_id"]
     assert UserAdmin().get_details_columns() == ["addresses", "profile", "id", "name"]
     assert await UserAdmin().get_prop_value(user, "name_with_id") == "batman - 1"
+
+
+def test_sort_query() -> None:
+    class AddressAdmin(ModelView, model=Address):
+        ...
+
+    query = select(Address)
+
+    request = Request({"type": "http", "query_string": "sortBy=id&sort=asc"})
+    stmt = AddressAdmin().sort_query(query, request)
+    assert "ORDER BY addresses.id ASC" in str(stmt)
+
+    request = Request({"type": "http", "query_string": b"sortBy=user.name&sort=desc"})
+    stmt = AddressAdmin().sort_query(query, request)
+    assert "ORDER BY users.name DESC" in str(stmt)
+
+    request = Request({"type": "http", "query_string": b"sortBy=user.profile.role&sort=desc"})
+    stmt = AddressAdmin().sort_query(query, request)
+    assert "ORDER BY profiles.role DESC" in str(stmt)