Enhance Database Modeling and SQLAlchemy Compatibility #1593
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YuriiMotov
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Sep 3, 2025
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@cubxxw, thanks for your interest and efforts!
I think we don't need any of these changes
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| # Shared properties | ||
| class UserBase(SQLModel): | ||
| email: EmailStr = Field(unique=True, index=True, max_length=255) | ||
| email: EmailStr = Field( | ||
| unique=True, index=True, max_length=255, sa_type=String(255) |
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In current version of SQLModel, setting max_length will already create correct column type email VARCHAR(255)
| @@ -18,20 +21,20 @@ class UserCreate(UserBase): | |||
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| class UserRegister(SQLModel): | |||
| email: EmailStr = Field(max_length=255) | |||
| email: str = Field(max_length=255) | |||
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I don't see a point in this change. Moreover, it will allow creating users with invalid emails
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| # Remove foreign_key constraint, but keep it indexed for performance | ||
| owner_id: uuid.UUID = Field(index=True, nullable=False) | ||
| owner: User | None = Relationship( | ||
| back_populates="items", | ||
| sa_relationship_kwargs={ | ||
| "primaryjoin": "User.id == Item.owner_id", | ||
| "foreign_keys": "[Item.owner_id]", | ||
| }, |
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What kind of performance boost will this give?
I think we don't need it
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This pull request makes several changes to the
backend/app/models.pyfile to enhance database modeling and improve compatibility with SQLAlchemy. The key updates include adjustments to field definitions, changes to relationships, and the removal of certain constraints.Changes to field definitions:
emailfield inUserBaseto explicitly usesa_type=String(255)for better SQLAlchemy compatibility.emailfield type inUserRegister,UserUpdate, andUserUpdateMefromEmailStrtostrfor consistency and to avoid type-related issues.Changes to relationships:
itemsrelationship in theUsermodel to includesa_relationship_kwargsfor defining cascading behavior and specifying join conditions.owner_idfield in theItemmodel to remove theforeign_keyconstraint while keeping it indexed for performance. Addedsa_relationship_kwargsto theownerrelationship for explicit join conditions.