javascript - Define ng-model by name -

i have complex model, example:

model = {   "data_level1": {     "data_level2": {       "data_level3": {         "data_level4": "myvalue"...

how can avoid writing:

<input type="text" ng-model="model.data_level1.data_level2.data_level3.data_level4" />

and write instead like:

<input type="text" ng-model="data_level4" />

thanks.

do in controller:

$scope.submodel = $scope.model.data_level1.data_level2.data_level3;

and then:

<input type="text" ng-model="submodel.data_level4"  />

note: can't set submodel data_level4 because string, setting data_level3 have submodel referencing same object within original model.

edit: added pnlkr done @ryanyuyu

Dil