method
hash_filter
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hash_filter(params, filter)
private
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# File actionpack/lib/action_controller/metal/strong_parameters.rb, line 447 def hash_filter(params, filter) filter = filter.with_indifferent_access # Slicing filters out non-declared keys. slice(*filter.keys).each do |key, value| next unless value if filter[key] == EMPTY_ARRAY # Declaration { comment_ids: [] }. array_of_permitted_scalars_filter(params, key) else # Declaration { user: :name } or { user: [:name, :age, { address: ... }] }. params[key] = each_element(value) do |element| if element.is_a?(Hash) element = self.class.new(element) unless element.respond_to?(:permit) element.permit(*Array.wrap(filter[key])) end end end end end