router.ex

...

pipeline :browser do
  plug :accepts, ["html"]
  plug :fetch_session
  plug :fetch_flash
  plug :protect_from_forgery
  plug :put_secure_browser_headers
  plug :fetch_current_user
end
  
...

## Authentication routes

scope "/", CamWeb do
  pipe_through [:browser, :redirect_if_user_is_authenticated]

  get "/users/register", UserRegistrationController, :new
  post "/users/register", UserRegistrationController, :create
  get "/users/log_in", UserSessionController, :new
  post "/users/log_in", UserSessionController, :create
  get "/users/reset_password", UserResetPasswordController, :new
  post "/users/reset_password", UserResetPasswordController, :create
  get "/users/reset_password/:token", UserResetPasswordController, :edit
  put "/users/reset_password/:token", UserResetPasswordController, :update
end

scope "/", CamWeb do
  pipe_through [:browser, :require_authenticated_user]

  get "/users/settings", UserSettingsController, :edit
  put "/users/settings", UserSettingsController, :update
  get "/users/settings/confirm_email/:token", UserSettingsController, :confirm_email
end

scope "/", CamWeb do
  pipe_through [:browser]

  delete "/users/log_out", UserSessionController, :delete
  get "/users/confirm", UserConfirmationController, :new
  post "/users/confirm", UserConfirmationController, :create
  get "/users/confirm/:token", UserConfirmationController, :confirm
end
  
...