method

fetch

v5.0.0.1 - Show latest stable - 0 notes - Class: ActionDispatch::Http::Headers

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What's this?

fetch(key, default = DEFAULT) public

Returns the value for the given key mapped to @env.

If the key is not found and an optional code block is not provided, raises a KeyError exception.

If the code block is provided, then it will be run and its result returned.

Show source

# File actionpack/lib/action_dispatch/http/headers.rb, line 85
      def fetch(key, default = DEFAULT)
        @req.fetch_header(env_name(key)) do
          return default unless default == DEFAULT
          return yield if block_given?
          raise NameError, key
        end
      end

fetch

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