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Fix SkipIf and TakeIf extension methods issues in Boilerplate (#9598) #9599

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msynk
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@msynk msynk commented Jan 1, 2025

closes #9598

Summary by CodeRabbit

  • Bug Fixes

    • Improved null handling in query parameter processing across multiple controllers
    • Enhanced safety when accessing optional query parameters
  • New Features

    • Added conditional SignalR integration for product-related data changes
    • Introduced more flexible LINQ extension methods for conditional skipping and taking of query results
  • Refactor

    • Updated code to use null-conditional operators for safer parameter access
    • Implemented more robust query parameter handling

@msynk msynk requested a review from ysmoradi January 1, 2025 12:02
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coderabbitai bot commented Jan 1, 2025

Walkthrough

The pull request introduces modifications to several controller classes and a LINQ extensions file. The changes primarily focus on improving null handling for query parameters in CategoryController, ProductController, and TodoItemController. Additionally, new overloads for SkipIf and TakeIf extension methods are added to LinqExtensions.cs, allowing these methods to work with nullable integer counts. The modifications enhance code robustness by preventing potential null reference exceptions and providing more flexible query manipulation.

Changes

File Change Summary
.../CategoryController.cs Added null-conditional operator (?.) for odataQuery.Skip and odataQuery.Top
.../ProductController.cs - Added null-conditional operator for odataQuery.Skip and odataQuery.Top
- Added conditional SignalR-related code and methods
.../TodoItemController.cs Replaced null-forgiving operator (!) with null-conditional operator (?.) for query parameters
.../LinqExtensions.cs Added new overloads for SkipIf and TakeIf methods for both IQueryable<T> and IEnumerable<T> with nullable integer count

Assessment against linked issues

Objective Addressed Explanation
Fix SkipIf and TakeIf extension methods to handle nullable values [#9598]

Poem

🐰 Null values dance, no more despair,
Extensions now with gentle care,
Skip and Take, with nullable might,
Coding magic takes its flight!
Boilerplate rejoices, bugs take flight! 🚀


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Actionable comments posted: 0

🧹 Nitpick comments (5)
src/Templates/Boilerplate/Bit.Boilerplate/src/Server/Boilerplate.Server.Api/Controllers/Todo/TodoItemController.cs (1)

26-27: Safe usage of nullable skip/take
This is a correct usage of the new SkipIf and TakeIf methods with nullable integers. The code checks odataQuery.Skip and odataQuery.Top for null before invoking the skip/take operations, which avoids null reference exceptions.

Consider whether negative values for skip or top could slip in. If negative values can occur, .NET will throw an ArgumentOutOfRangeException.

src/Templates/Boilerplate/Bit.Boilerplate/src/Shared/Extensions/LinqExtensions.cs (2)

34-43: New overloads for IQueryable SkipIf and TakeIf
These methods correctly handle nullable counts by skipping or taking only when the predicate is true and the count has a value. This approach improves flexibility and prevents potential null reference exceptions.

If negative counts are possible, consider adding validation logic to avoid unexpected ArgumentOutOfRangeException.


69-77: New overloads for IEnumerable SkipIf and TakeIf
Same as above, these overloads correctly implement the nullable count logic for IEnumerable<T>.

Likewise, consider adding validation for negative counts if that scenario is likely or possible.

src/Templates/Boilerplate/Bit.Boilerplate/src/Server/Boilerplate.Server.Api/Controllers/Products/ProductController.cs (1)

32-33: Proper use of nullable skip/take
The application of SkipIf and TakeIf leverages the nullable integer logic effectively, keeping the code safe from null references.

Consider whether defensive checks for negative skip/take values are needed to prevent runtime exceptions.

src/Templates/Boilerplate/Bit.Boilerplate/src/Server/Boilerplate.Server.Api/Controllers/Categories/CategoryController.cs (1)

32-33: Consistent handling of nullable skip/take
This usage is consistent with the approach in other controllers, checking odataQuery.Skip and odataQuery.Top for null before invoking skip/take.

As a minor improvement, if negative values are a concern, add defensive checks to avoid exceptions thrown by .Skip() or .Take() with negative arguments.

📜 Review details

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Review profile: CHILL
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📥 Commits

Reviewing files that changed from the base of the PR and between f1a1650 and 7a40551.

📒 Files selected for processing (4)
  • src/Templates/Boilerplate/Bit.Boilerplate/src/Server/Boilerplate.Server.Api/Controllers/Categories/CategoryController.cs (1 hunks)
  • src/Templates/Boilerplate/Bit.Boilerplate/src/Server/Boilerplate.Server.Api/Controllers/Products/ProductController.cs (1 hunks)
  • src/Templates/Boilerplate/Bit.Boilerplate/src/Server/Boilerplate.Server.Api/Controllers/Todo/TodoItemController.cs (1 hunks)
  • src/Templates/Boilerplate/Bit.Boilerplate/src/Shared/Extensions/LinqExtensions.cs (2 hunks)

@msynk msynk merged commit be736ff into bitfoundation:develop Jan 1, 2025
3 checks passed
@msynk msynk deleted the 9598-templates-boilerplate-skipif-takeif-null-issues branch January 1, 2025 12:39
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Successfully merging this pull request may close these issues.

The SkipIf and TakeIf extension methods in the Boilerplate project template have issues with nullable values
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