Define http method for sending a request using the http_method helper.

operation :fetch do
  http_method :get
  # ...
end

As usual, you have access to current options. This can be useful to make the method dependent from either a version, or another variation of API.

operation :fetch do
  # ...
  option :version, proc(&:to_i)

  http_method { version > 2 ? :post : :get }
  # ...
end

The definition can be reloaded at any level of scoping.

Following RFC 7231, we support only valid methods (they could be set as case-insensitive stringified object):

• GET
• POST
• PUT
• PATCH
• DELETE
• OPTIONS
• HEAD
• TRACE
• CONNECT

Setting http method to another value, or missing it, will cause an exception.