method

build_query_string

v2.3.8 - Show latest stable - Class: ActionController::Routing::Route

build_query_string(hash, only_keys = nil)

public

Build a query string from the keys of the given hash. If only_keys is given (as an array), only the keys indicated will be used to build the query string. The query string will correctly build array parameter values.

# File actionpack/lib/action_controller/routing/route.rb, line 48
      def build_query_string(hash, only_keys = nil)
        elements = []

        (only_keys || hash.keys).each do |key|
          if value = hash[key]
            elements << value.to_query(key)
          end
        end

        elements.empty? ? '' : "?#{elements.sort * '&'}"
      end

build_query_string

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