You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: user_actions_controller.rb
    path of file: ./repos/discourse/app/controllers
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class UserActionsController < ApplicationController
  def index
    user_actions_params.require(:username)

    user =
      fetch_user_from_params(
        include_inactive:
          current_user.try(:staff?) || (current_user && SiteSetting.show_inactive_accounts),
      )
    offset = [0, user_actions_params[:offset].to_i].max
    action_types = (user_actions_params[:filter] || "").split(",").map(&:to_i)
    limit = user_actions_params.fetch(:limit, 30).to_i

    raise Discourse::NotFound unless guardian.can_see_profile?(user)
    raise Discourse::NotFound unless guardian.can_see_user_actions?(user, action_types)

    opts = {
      user_id: user.id,
      user: user,
      offset: offset,
      limit: limit,
      action_types: action_types,
      guardian: guardian,
      ignore_private_messag
    
  def index
    user_actions_params.require(:username)

    user =
      fetch_user_from_params(
        include_inactive:
          current_user.try(:staff?) || (current_user && SiteSetting.show_inactive_accounts),
      )
    offset = [0, user_actions_params[:offset].to_i].max
    action_types = (user_actions_params[:filter] || "").split(",").map(&:to_i)
    limit = user_actions_params.fetch(:limit, 30).to_i

    raise Discourse::NotFound unless guardian.can_see_profile?(user)
    raise Discourse::NotFound unless guardian.can_see_user_actions?(user, action_types)

    opts = {
      user_id: user.id,
      user: user,
      offset: offset,
      limit: limit,
      action_types: action_types,
      guardian: guardian,
      ignore_private_messages: params[:filter].blank?,
      acting_username: params[:acting_username],
    }

    stream = UserAction.stream(opts).to_a
    render_serialized(stream, UserActionSerializer, root: "user_actions")
  end