angularjs - NG-Show based upon refering URL -

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can use ng-show display button based upon internal page user came from.

for example:
have 3 pages: home, about, middle man.

two buttons: home, about.

on middle man page want 1 button display based upon page user on prior. 

<button ng-show="?">back home</button> <button ng-show="?">back about</button>

yes can. can store last visited page using factory example , display correct buttons based on value. factory should this:

myapp.factory('historyfactory', function() {     var _lastvisitedpage;      return {         setlastvisitedpage: function(page) {             _lastvisitedpage = page;         },         getlastvisitedpage: function() {             return _lastvisitedpage;         }     } });

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