method
dig
v5.1.7 -
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Class: Parameters
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dig(*keys)
public
Extracts the nested parameter from the given keys by calling dig at each step. Returns nil if any intermediate step is nil.
params = ActionController::Parameters.new(foo: { bar: { baz: 1 } }) params.dig(:foo, :bar, :baz) # => 1 params.dig(:foo, :zot, :xyz) # => nil params2 = ActionController::Parameters.new(foo: [10, 11, 12]) params2.dig(:foo, 1) # => 11