Don't work search in HashModels

[KristinaErdman]

My model:

class Customer(HashModel):
    first_name: str
    last_name: str
    join_date: datetime.date
    age: int
    bio: Optional[str]

    class Meta:
        database = redis_connection

• Save customer (it work):

andrew = Customer(
        first_name="Andrew",
        last_name="Brookins",
        join_date=datetime.date.today(),
        age=38,
        bio="Python developer, works at Redis, Inc."
    )
andrew.save()

• Get customer by pk (it work):

andrew_in_redis = Customer.get("01GQ73JNMTA3Q4MYY2V79E7V5X")
print(andrew_in_redis)

• Find customer by first_name (it doesn't work):

andrew_in_redis = Customer.find(Customer.first_name == "Andrew").all()
print(andrew_in_redis)

Result:

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 162, in __call__
    await self.app(scope, receive, _send)
  File "/usr/local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 79, in __call__
    raise exc
  File "/usr/local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 68, in __call__
    await self.app(scope, receive, sender)
  File "/usr/local/lib/python3.11/site-packages/fastapi/middleware/asyncexitstack.py", line 21, in __call__
    raise e
  File "/usr/local/lib/python3.11/site-packages/fastapi/middleware/asyncexitstack.py", line 18, in __call__
    await self.app(scope, receive, send)
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 706, in __call__
    await route.handle(scope, receive, send)
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 276, in handle
    await self.app(scope, receive, send)
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 66, in app
    response = await func(request)
               ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/fastapi/routing.py", line 236, in app
    raw_response = await run_endpoint_function(
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/fastapi/routing.py", line 164, in run_endpoint_function
    return await run_in_threadpool(dependant.call, **values)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/starlette/concurrency.py", line 41, in run_in_threadpool
    return await anyio.to_thread.run_sync(func, *args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/anyio/to_thread.py", line 31, in run_sync
    return await get_asynclib().run_sync_in_worker_thread(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/anyio/_backends/_asyncio.py", line 937, in run_sync_in_worker_thread
    return await future
           ^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/anyio/_backends/_asyncio.py", line 867, in run
    result = context.run(func, *args)
             ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/app/auth/routes.py", line 42, in check_code
    andrew_in_redis = Customer.find(Customer.first_name == "Andrew", Customer.age==38).all()
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/redis_om/model/model.py", line 1212, in find
    return FindQuery(expressions=expressions, model=cls)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/redis_om/model/model.py", line 350, in __init__
    if not has_redisearch(model.db()):
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/redis_om/checks.py", line 25, in has_redisearch
    if has_redis_json(conn):
       ^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/redis_om/checks.py", line 17, in has_redis_json
    command_exists = check_for_command(conn, "json.set")
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/redis_om/checks.py", line 9, in check_for_command
    cmd_info = conn.execute_command("command", "info", cmd)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/redis/client.py", line 1258, in execute_command
    return conn.retry.call_with_retry(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/redis/retry.py", line 46, in call_with_retry
    return do()
           ^^^^
  File "/usr/local/lib/python3.11/site-packages/redis/client.py", line 1259, in <lambda>
    lambda: self._send_command_parse_response(
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/redis/client.py", line 1235, in _send_command_parse_response
    return self.parse_response(conn, command_name, **options)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/redis/client.py", line 1285, in parse_response
    return self.response_callbacks[command_name](response, **options)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/redis/client.py", line 553, in parse_command
    cmd_name = str_if_bytes(command[0])
                            ~~~~~~~^^^
TypeError: 'NoneType' object is not subscriptable

Why it doesn't work? Am I doing something wrong?

[abdulzain6]

Facing Same error..

[XChikuX]

Ensure you have rejson and redisearch modules enabled.
If you use docker, you can use the one from here:
https://hub.docker.com/r/redis/redis-stack-server

[ycdaskin]

Ensure you have rejson and redisearch modules enabled. If you use docker, you can use the one from here: https://hub.docker.com/r/redis/redis-stack-server

what if i don't use Docker? i use heroku dynos for my flask api to run and i wan to migrate my db from postgres to redis. how can i enable redisearch module?

[XChikuX]

Ensure you have rejson and redisearch modules enabled. If you use docker, you can use the one from here: https://hub.docker.com/r/redis/redis-stack-server

what if i don't use Docker? i use heroku dynos for my flask api to run and i wan to migrate my db from postgres to redis. how can i enable redisearch module?

Refer to the redis modules docs. You'll have to compile modules from source.

I personally found this to be a headache and settled on using the docker container system.

[chayim]

You can install redis-stack from a variety of different sources, include Redis Cloud. These instuructions include support for many platforms, and OS native packages.