Title: Custom Rules
Last modified: September 26, 2017

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# Custom Rules

 *  Resolved [douglasparrish](https://wordpress.org/support/users/douglasparrish/)
 * (@douglasparrish)
 * [8 years, 8 months ago](https://wordpress.org/support/topic/custom-rules/)
 * I need some help with adding a custom rule. I want to change the file name to
   a UUID on upload.
 * I’m referencing the “custom rule” documentation, but am not sure where to place
   the add_filter function with my new rule code. (Your sample below)
 * add_filter( ‘frou_sanitize_file_name’, function($filename_infs){
    $filename_infs[‘
   structure’][‘translation’][‘my_custom_rule’] = get_current_user_id(); return 
   $filename_infs; }, 20 );

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [Pablo Pacheco](https://wordpress.org/support/users/karzin/)
 * (@karzin)
 * [8 years, 8 months ago](https://wordpress.org/support/topic/custom-rules/#post-9531239)
 * Hello [@douglasparrish](https://wordpress.org/support/users/douglasparrish/),
   
   You can put that on your functions.php for example
 *  Plugin Author [Pablo Pacheco](https://wordpress.org/support/users/karzin/)
 * (@karzin)
 * [8 years, 7 months ago](https://wordpress.org/support/topic/custom-rules/#post-9662500)
 * I’m going to close this ticket. If you have any questions, let me know

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Custom Rules’ is closed to new replies.

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 * 2 replies
 * 2 participants
 * Last reply from: [Pablo Pacheco](https://wordpress.org/support/users/karzin/)
 * Last activity: [8 years, 7 months ago](https://wordpress.org/support/topic/custom-rules/#post-9662500)
 * Status: resolved