find() returns empty list with nested EmbeddedJsonModel

[abrookins]

Problem

find() silently returns an empty list for models with EmbeddedJsonModel fields, even when matching records exist in Redis.

Example

class ExperimentMetadata(JsonModel):
    class Meta:
        embedded = True
    factors: Dict[str, Any] = Field(default_factory=dict)

class Experiment(JsonModel):
    exp_name: str = Field(index=True)
    experiment_metadata: ExperimentMetadata = Field(default_factory=ExperimentMetadata)

# This returns [] even when records exist
Experiment.find(Experiment.exp_name == "test1").all()

Impact

• Silent failures are confusing for users
• Users may think their data wasn't saved when it actually was
• No error message to help diagnose the problem

Related

• find() always returns empty list with Nested Model even though JSONModel is used (Silently) #675 (original user report)

Investigation Needed

• Determine why queries fail with nested models
• Check if the index is being created correctly
• Verify the RediSearch query syntax for nested model scenarios