enhancing primary key check to be compatible with sqlmodel (#672)

aredis_om/model/model.py

@@ -1542,7 +1542,7 @@ def validate_primary_key(cls):
             else:
                 field_info = field.field_info
 
-            if getattr(field_info, "primary_key", None):
+            if getattr(field_info, "primary_key", None) is True:
                 primary_keys += 1
         if primary_keys == 0:
             raise RedisModelError("You must define a primary key for the model")
@@ -1823,7 +1823,7 @@ def schema_for_fields(cls):
             else:
                 field_info = field.field_info
 
-            if getattr(field_info, "primary_key", None):
+            if getattr(field_info, "primary_key", None) is True:
                 if issubclass(_type, str):
                     redisearch_field = (
                         f"{name} TAG SEPARATOR {SINGLE_VALUE_TAG_FIELD_SEPARATOR}"
@@ -2018,7 +2018,7 @@ def schema_for_fields(cls):
                 field_info = field.field_info
             else:
                 field_info = field
-            if getattr(field_info, "primary_key", None):
+            if getattr(field_info, "primary_key", None) is True:
                 if issubclass(_type, str):
                     redisearch_field = f"$.{name} AS {name} TAG SEPARATOR {SINGLE_VALUE_TAG_FIELD_SEPARATOR}"
                 else:

tests/test_json_model.py

@@ -1160,6 +1160,18 @@ class TestLiterals(JsonModel):
     assert rematerialized.pk == item.pk
 
 
+
+@py_test_mark_asyncio
+async def test_two_false_pks():
+    from pydantic_core import PydanticUndefined as Undefined
+
+    class SomeModel(JsonModel):
+        field1: str = Field(index=True, primary_key=Undefined)
+        field2: str = Field(index=True, primary_key=Undefined)
+
+    SomeModel(field1="foo", field2="bar")
+
+@py_test_mark_asyncio
 async def test_child_class_expression_proxy():
     # https://github.com/redis/redis-om-python/issues/669 seeing weird issue with child classes initalizing all their undefined members as ExpressionProxies
     class Model(JsonModel):
@@ -1183,6 +1195,7 @@ class Child(Model):
     assert rematerialized.age != 19
     assert rematerialized.bio is None
 
+@py_test_mark_asyncio
 async def test_merged_model_error():
     class Player(EmbeddedJsonModel):
         username: str = Field(index=True)