overriding_instance_methods.md

Overriding instance methods

You can override the included instance methods and use super to delegate to the WebPipe's implementation.

For instance, you might want to add some behavior to your initializer. However, consider that you need to dispatch the arguments that WebPipe needs. Example:

class MyApp
  include WebPipe

  attr_reader :body

  def initialize(body:, **kwargs)
    @body = body
    super(**kwargs)
  end

  plug :render

  private

  def render(conn)
    conn.set_response_body(body)
  end
end

The same goes with any other instance method, like Rack's interface:

class My App
  include WebPipe

  plug :render

  def render(conn)
    conn.set_response_body(conn.env['body'])
  end

  def call(env)
    env['body'] = 'Hello, world!'
    super
  end
end