Method: ActionDispatch::Journey::Formatter#generate

Defined in:
actionpack/lib/action_dispatch/journey/formatter.rb

#generate(name, options, path_parameters) ⇒ Object 



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# File 'actionpack/lib/action_dispatch/journey/formatter.rb', line 61

def generate(name, options, path_parameters)
  original_options = options.dup
  path_params = options.delete(:path_params) || {}
  options = path_params.merge(options)
  constraints = path_parameters.merge(options)
  missing_keys = nil

  match_route(name, constraints) do |route|
    parameterized_parts = extract_parameterized_parts(route, options, path_parameters)

    # Skip this route unless a name has been provided or it is a standard Rails
    # route since we can't determine whether an options hash passed to url_for
    # matches a Rack application or a redirect.
    next unless name || route.dispatcher?

    missing_keys = missing_keys(route, parameterized_parts)
    next if missing_keys && !missing_keys.empty?
    params = options.delete_if do |key, _|
      # top-level params' normal behavior of generating query_params should be
      # preserved even if the same key is also a bind_param
      parameterized_parts.key?(key) || route.defaults.key?(key) ||
        (path_params.key?(key) && !original_options.key?(key))
    end

    defaults       = route.defaults
    required_parts = route.required_parts

    route.parts.reverse_each do |key|
      break if defaults[key].nil? && parameterized_parts[key].present?
      next if parameterized_parts[key].to_s != defaults[key].to_s
      break if required_parts.include?(key)

      parameterized_parts.delete(key)
    end

    return RouteWithParams.new(route, parameterized_parts, params)
  end

  unmatched_keys = (missing_keys || []) & constraints.keys
  missing_keys = (missing_keys || []) - unmatched_keys

  MissingRoute.new(constraints, missing_keys, unmatched_keys, routes, name)
end