Скачать или смотреть Filtering over Nested Objects in Stream Chat: Is it Possible?

Discover whether you can filter over nested objects in Stream Chat and learn how to properly query user objects with examples.
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This video is based on the question https://stackoverflow.com/q/73195904/ asked by the user 'Jose' ( https://stackoverflow.com/u/3304329/ ) and on the answer https://stackoverflow.com/a/73279638/ provided by the user 'Jose' ( https://stackoverflow.com/u/3304329/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding Query Limitations in Stream Chat

If you're using Stream Chat and looking to filter over nested objects, you might find yourself in a bit of a predicament. This issue is common, especially when you're trying to include additional parameters in your user objects, such as categories or tags. In this post, we'll explore this topic and clarify if filtering over nested objects in Stream Chat is feasible.

The Core Problem

When you connect a user in Stream Chat, it's easy to add custom properties, like so:

[[See Video to Reveal this Text or Code Snippet]]

In this example, we have a user named 'jose' with a custom property myObject that includes additional fields. However, when it comes time to query the user based on the nested property myObject.categoria, the result can be surprisingly empty:

[[See Video to Reveal this Text or Code Snippet]]

The Technical Limitations

Current API Constraints

As per the support team at Stream, the current API has limitations regarding filtering. Specifically:

Only Top-Level Values Are Filterable: The API does not allow filtering on nested objects. This means that while you can effectively filter based on user id, name, or other top-level properties, queries aimed at nested structures like myObject will return empty results.

What Does This Mean for Developers?

This restriction means that developers need to adapt their data structures or querying strategies to work within the confines of the Stream Chat API. Here are some workarounds you might consider:

Use Top-Level Properties: If possible, place your filtering criteria in the top level of the user object.

Restructure Your Data: If you regularly need to perform searches over nested properties, consider adjusting your data model to accommodate this limitation.

Conclusion

In conclusion, while Stream Chat offers robust functionality for managing user data, the API's inability to filter over nested objects can present challenges. For now, you can only filter on top-level values, which means a bit of rethinking may be necessary for how you structure your queries and user objects. By understanding these limitations, you can better prepare yourself for effective user management within the Stream Chat environment.

If you have specific use cases or further questions about Stream Chat, feel free to share in the comments below!