Expand examples for NestedQuery to show how to delegate a QueryData impl#23686
Merged
alice-i-cecile merged 2 commits intobevyengine:mainfrom Apr 9, 2026
Merged
Expand examples for NestedQuery to show how to delegate a QueryData impl#23686alice-i-cecile merged 2 commits intobevyengine:mainfrom
NestedQuery to show how to delegate a QueryData impl#23686alice-i-cecile merged 2 commits intobevyengine:mainfrom
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alice-i-cecile
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Apr 6, 2026
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Co-authored-by: Kevin Chen <chen.kevin.f@gmail.com>
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Objective
Demonstrate how to use
NestedQueryto implement relational queries.There is more design work required before making first-party relational queries, but third-party implementations are already possible using
NestedQuery. The documentation does not make it clear how to actually implement them, though, and the only real example is buried in the PR description of #21557.Solution
Expand the examples for
NestedQueryto include the implementation of aParent<D>relational query. Keep one example that uses#[derive(QueryData)]with a method on the generatedItemtype, but also add an example with a manualQueryDataimpl that delegates everything.