Categorising by a field in the database
Hi guys,
I have a page with the days of the week on and when you click on a day it takes you to a new page and using a rest service with the added parameter "where" 
 {"Day":"Monday"} it loads all the night clubs that are open on that day. 
 and when you click on to the nightclub it loads a page with further information on it about the club using local storage.
This is all working perfectly.
In my database there is a field for 'Genre'. I'd like to be able to categorise the Clubs that are open on a selected day by their genre. 
 For example once a day has been tapped i want the page to load and show the clubs that are open like this:
<Back Monday
Hip-Hop - 
 Hip-Hop club 1 
 Hip-Hop club 2 
 Hiphop club 3
Techno- 
 Techno club 1 
 Techno club 2
House- 
 House club 1 
 house club 2
Any idea how this can be done?
Cheers