strong parameter example for hashes with integer keys.
This replicates the situation described in https://github.com/rails/strong_parameters/issues/114
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@ -290,6 +290,20 @@ parameters:
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params.require(:author).permit(:name, books_attributes: [:title, :id, :_destroy])
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```
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Hasesh with integer keys are treated differently and you can declare
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the attributes as if they were direct children. You get this kind of
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parameters when you use `accepts_nested_attributes_for` in combination
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with a `has_many` association:
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```ruby
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# To whitelist the following data:
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# {"book" => {"title" => "Some Book",
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# "chapters_attributes" => { "1" => {"title" => "First Chapter"},
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# "2" => {"title" => "Second Chapter"}}}}
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params.require(:book).permit(:title, chapters_attributes: [:title])
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```
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#### Outside the Scope of Strong Parameters
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The strong parameter API was designed with the most common use cases
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