method

permitted_scalar_filter

rails latest stable - Class: ActionController::Parameters

permitted_scalar_filter(params, permitted_key)

private

Adds existing keys to the params if their values are scalar.

For example:

puts self.keys #=> ["zipcode(90210i)"]
params = {}

permitted_scalar_filter(params, "zipcode")

puts params.keys # => ["zipcode"]

# File actionpack/lib/action_controller/metal/strong_parameters.rb, line 1116
      def permitted_scalar_filter(params, permitted_key)
        permitted_key = permitted_key.to_s

        if has_key?(permitted_key) && permitted_scalar?(self[permitted_key])
          params[permitted_key] = self[permitted_key]
        end

        each_key do |key|
          next unless key =~ /\(\d+[if]?\)\z/
          next unless $~.pre_match == permitted_key

          params[key] = self[key] if permitted_scalar?(self[key])
        end
      end

permitted_scalar_filter

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