method
hash_filter
Ruby on Rails latest stable (v7.1.3.2)
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Class: Parameters
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hash_filter(params, filter)
private
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# File actionpack/lib/action_controller/metal/strong_parameters.rb, line 1143 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 next unless has_key? key if filter[key] == EMPTY_ARRAY # Declaration { comment_ids: [] }. array_of_permitted_scalars?(self[key]) do |val| params[key] = val end elsif filter[key] == EMPTY_HASH # Declaration { preferences: {} }. if value.is_a?(Parameters) params[key] = permit_any_in_parameters(value) end elsif non_scalar?(value) # Declaration { user: :name } or { user: [:name, :age, { address: ... }] }. params[key] = each_element(value, filter[key]) do |element| element.permit(*Array.wrap(filter[key])) end end end end