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fix(delegate): null reference when reading an optional relation #1491

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merged 1 commit into from
Jun 7, 2024

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@ymc9 ymc9 commented Jun 7, 2024

Fixes #1483

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coderabbitai bot commented Jun 7, 2024

Walkthrough

Walkthrough

The recent changes address an issue where optional relations in polymorphic models caused errors during database operations. The DelegateProxyHandler class now includes checks for the entity parameter in its assembleUp and assembleDown methods to prevent processing null or undefined values. Additionally, a regression test (issue-1483.test.ts) has been introduced to ensure that the error is handled correctly.

Changes

Files / Groups Change Summary
packages/runtime/src/enhancements/delegate.ts Added checks for the existence of the entity parameter in assembleUp and assembleDown methods.
tests/regression/tests/issue-1483.test.ts Introduced a regression test case to validate the fix for issue 1483.

Sequence Diagram(s) (Beta)

sequenceDiagram
    participant User
    participant DelegateProxyHandler
    participant Database

    User->>DelegateProxyHandler: Call assembleUp(entity)
    alt entity is falsy
        DelegateProxyHandler-->>User: Return entity
    else entity exists
        DelegateProxyHandler->>Database: Process entity
        Database-->>DelegateProxyHandler: Return processed data
        DelegateProxyHandler-->>User: Return processed data
    end
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Assessment against linked issues

Objective Addressed Explanation
Fix error when including optional relation in presence of polymorphic relation (#1483)

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Actionable comments posted: 0

Outside diff range and nitpick comments (1)
packages/runtime/src/enhancements/delegate.ts (1)

Line range hint 309-309: Consider replacing the delete operator with setting properties to undefined for better performance.

- delete obj.property;
+ obj.property = undefined;

Also applies to: 332-332, 709-709, 772-772, 780-780

Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between ab9d27f and 7b48368.

Files selected for processing (2)
  • packages/runtime/src/enhancements/delegate.ts (2 hunks)
  • tests/regression/tests/issue-1483.test.ts (1 hunks)
Files skipped from review due to trivial changes (1)
  • tests/regression/tests/issue-1483.test.ts
Additional context used
Biome
packages/runtime/src/enhancements/delegate.ts

[error] 309-309: Avoid the delete operator which can impact performance. (lint/performance/noDelete)

Unsafe fix: Use an undefined assignment instead.


[error] 332-332: Avoid the delete operator which can impact performance. (lint/performance/noDelete)

Unsafe fix: Use an undefined assignment instead.


[error] 709-709: Avoid the delete operator which can impact performance. (lint/performance/noDelete)

Unsafe fix: Use an undefined assignment instead.


[error] 772-772: Avoid the delete operator which can impact performance. (lint/performance/noDelete)

Unsafe fix: Use an undefined assignment instead.


[error] 780-780: Avoid the delete operator which can impact performance. (lint/performance/noDelete)

Unsafe fix: Use an undefined assignment instead.

Additional comments not posted (2)
packages/runtime/src/enhancements/delegate.ts (2)

1104-1106: LGTM! The early return for falsy entities in assembleUp should prevent null reference errors as intended.


1155-1157: LGTM! The early return for falsy entities in assembleDown should prevent null reference errors as intended.

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