>>>Looks as if you're using angular-ui. If that's the case wouldn't a nested state/view be a good solution.
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>>No, the grids are not identical.
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>You could put the loadView function outside the controllers and call it from each passing in $scope, $rootscope and invoiceno. ?

Why not create a common prototype for those 3 controllers?

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>>>P.S. Don't like the $parent.$parent part. If's inheritantly (no pun intended) fragile since it depends on a known/fixed scope hierarchy....
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>>I don't like it either, but it was not my code, so I left it as is. I did figure out a solution. I declared the function at the top of the file and had to pass $scope, $rootScope and $state to it and then I was just calling this function 3 times (which I don't like either, but can live with it).