fix(assistants): brain id is null (#2445)

This pull request fixes an issue where the brain activation and value
handling were not working correctly. The `BrainInput` model now allows
for optional activation and value fields, and an empty string is
converted to `None` using a root validator. This ensures that brain
activation and value can be properly handled in the application.

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[Ellipsis](https://www.ellipsis.dev) for commit
d63ed6e651 |
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### Summary:
This PR modifies the `BrainInput` class in
`/backend/modules/assistant/dto/inputs.py` to make `activated` and
`value` fields optional and adds a root validator to convert empty
strings to `None`.

**Key points**:
- Modified `BrainInput` class in
`/backend/modules/assistant/dto/inputs.py`
- Made `activated` and `value` fields optional with default values
- Added root validator `empty_string_to_none` to convert empty strings
to `None`


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Generated with ❤️ by [ellipsis.dev](https://www.ellipsis.dev)



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backend/modules/assistant/dto/inputs.py

@@ -2,7 +2,7 @@ import json
 from typing import List, Optional
 from uuid import UUID
 
-from pydantic import BaseModel, model_validator
+from pydantic import BaseModel, model_validator, root_validator
 
 
 class EmailInput(BaseModel):
@@ -10,8 +10,15 @@ class EmailInput(BaseModel):
 
 
 class BrainInput(BaseModel):
-    activated: bool
-    value: UUID
+    activated: Optional[bool] = False
+    value: Optional[UUID] = None
+
+    @root_validator(pre=True)
+    def empty_string_to_none(cls, values):
+        for field, value in values.items():
+            if value == "":
+                values[field] = None
+        return values
 
 
 class FileInput(BaseModel):