Having trouble defining multiple routes together in rails 6.

In rails 3 we defined multiple routes like the example below.

member_routes = {
    :validate_update_action                => :put,
    :rebuild_update_form                   => :put,
    :create_change_request                 => :post,
    :validate_create_change_request_action => :post,
    :destroy                               => :get,
    :apply_to_beta                         => :put,
    :update_history                        => :get
  }

For rails 6 I think the body should be something similar to what i have below, but I'm not sure what the exact syntax is.

member_routes = {
        put 'validate_update_action';
        put 'rebuild_update_form';
        post 'create_change_request';
        post 'validate_create_change_request_action';
        get 'destroy';
        put 'apply_to_beta';
        get 'update_history';
    }