I have seen quite a few requests for search/filter directives, including myself. I created a ionFilterBar directive, similar to to ionActionSheet, which you call via a service from your controllers. You can pass many options into the show method including ability to debounce input, filter properties, custom filter, etc… and ability to configure items in ionicConfig such as themes/ionic color options, icons, transitions, backdrop etc…
For a demo of how this works in ios/Android see the animated gif http://makeagif.com/i/EZ-klS
Anyone interested in checking it out more details, or want to vote for it go to https://trello.com/c/KldV1zQK/26-ionsearch-for-items
For source, go to my forked repo (forked only for this feature https://github.com/djett41/ionic ). follow the README to run tests/docs locally too.
I only have a Galaxy S3, iPhone6, and an iphone4s that has some issues lol so any testers would be appreciated!!