observers.md

savon_version	order	title	layout	nav_savon_version
v2	9	Observers	guides	v2

Savon has one global way of adding observers to any request.

class Observer

  def notify(operation_name, builder, globals, locals)
    nil
  end

end

Savon.observers << Observer.new

Savon calls the #notify method of every observer in the order they were added and passes the name of the operation that is being called, the builder which can be asked for the generated request XML and any global and local options.

In the previous example, we're explicitly returning nil from the #notify method to allow Savon to continue and execute the request. But you can also return an HTTPI::Response to mock the request.

class Observer

  def notify(operation_name, builder, globals, locals)
    code    = 200
    headers = {}
    body    = ""

    HTTPI::Response.new(code, headers, body)
  end

end

Savon.observers << Observer.new

Clear the observers if you don't need them.

Savon.observers.clear