Sample Theme Options page for Multisite - what to consider

Question

I used Theme Options page from the Tutorial of Ian Stewart in some of my WP site, and it works just fine. What I did externally was this (closest English Tuts). All those sites were single sites. But now I'm dealing with a WordPress Network.

As I'm developing a single theme for all the sub-sites, I'm placing the theme-options.php into my theme as a common file. As per my search, I got a conditional statement:

global $blog_id;    
if( $blog_id == '1' ) {
   //do things for first site
}

Do I need to echo the same code of the theme-options.php under two such block to activate different thing in different site?
Or, do I need to made two different theme-options.php and conditionally load them for different site?

 global $blog_id;    
 if( $blog_id == '1' ) {
    require_once ( get_template_directory() . '/theme-options.php' );
 } elseif ( $blog_id == '2' ) {
    require_once ( get_template_directory() . '/theme-options-bengali.php' );
 } else {
    require_once ( get_template_directory() . '/theme-options.php' );
 }

Please note: Two of my site's settings, in many cases could be different and I'd need to grab them differently for the front-end.

Answer 1

I could take advantage of get_template_part( $slug, $name ) and use it like:

get_template_part( 'theme-options', get_current_blog_id() );

Say we are on blog_id 5, if theme-options-5.php exists it will be loaded. If not theme-options.php will be loaded as a fallback. Please note that get_template_part is using require.