Fix soft delete not being recognized.

crudkit/core/service.py

@@ -6,7 +6,7 @@ from flask import current_app
 from typing import Any, Callable, Type, TypeVar, Generic, Optional, Protocol, runtime_checkable, cast
 from sqlalchemy import and_, func, inspect, or_, text
 from sqlalchemy.engine import Engine, Connection
-from sqlalchemy.orm import Load, Session, with_polymorphic, Mapper, selectinload
+from sqlalchemy.orm import Load, Session, with_polymorphic, Mapper, selectinload, with_loader_criteria
 from sqlalchemy.orm.attributes import InstrumentedAttribute
 from sqlalchemy.sql import operators
 from sqlalchemy.sql.elements import UnaryExpression, ColumnElement
@@ -186,6 +186,31 @@ class CRUDService(Generic[T]):
 
     # ---- common building blocks
 
+    def _apply_soft_delete_criteria_for_children(self, query, plan: "CRUDService._Plan", params):
+        # Skip if caller explicitly asked for deleted
+        if _is_truthy((params or {}).get("include_deleted")):
+            return query
+
+        seen = set()
+        for _base_alias, rel_attr, _target_alias in plan.join_paths:
+            prop = getattr(rel_attr, "property", None)
+            if not prop:
+                continue
+            target_cls = getattr(prop.mapper, "class_", None)
+            if not target_cls or target_cls in seen:
+                continue
+            seen.add(target_cls)
+            # Only apply to models that support soft delete
+            if hasattr(target_cls, "is_deleted"):
+                query = query.options(
+                    with_loader_criteria(
+                        target_cls,
+                        lambda cls: cls.is_deleted == False,
+                        include_aliases=True
+                    )
+                )
+        return query
+
     def _order_clauses(self, order_spec, invert: bool = False):
         clauses = []
         for c, is_desc in zip(order_spec.cols, order_spec.desc):
@@ -442,6 +467,7 @@ class CRUDService(Generic[T]):
         plan = self._plan(params, root_alias)
         query = self._apply_projection_load_only(query, root_alias, plan)
         query = self._apply_firsthop_strategies(query, root_alias, plan)
+        query = self._apply_soft_delete_criteria_for_children(query, plan, params)
         if plan.filters:
             query = query.filter(*plan.filters)
 
@@ -528,6 +554,7 @@ class CRUDService(Generic[T]):
         plan = self._plan(params, root_alias)
         query = self._apply_projection_load_only(query, root_alias, plan)
         query = self._apply_firsthop_strategies(query, root_alias, plan)
+        query = self._apply_soft_delete_criteria_for_children(query, plan, params)
         if plan.filters:
             query = query.filter(*plan.filters)
         query = query.filter(getattr(root_alias, "id") == id)
@@ -548,6 +575,7 @@ class CRUDService(Generic[T]):
         query = self._apply_not_deleted(query, root_alias, params)
         query = self._apply_projection_load_only(query, root_alias, plan)
         query = self._apply_firsthop_strategies(query, root_alias, plan)
+        query = self._apply_soft_delete_criteria_for_children(query, plan, params)
         if plan.filters:
             query = query.filter(*plan.filters)