angularjs - Can I re-factor Angular JS validation conditionals to streamline code? -

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the below code 1 row of form.

i replicate "addcarform.ucarname.$dirty && addcarform.ucarname.$invalid" several times throughout snippet. can refactor variable, updated answer conditional user's input changes/ better way of refactoring?

<div class="form-group required " ng-class="{'has-error': addcarform.ucarname.$dirty && addcarform.ucarname.$invalid}">    <label class=" control-label col-lg-5 " for="ucarname">name:</label>    <div class="col-lg-7 ">      <input type="text" ng-model="cardetails.carname" name="ucarname" class="form-control" required />    </div>    <div class="row">      <div ng-show="addcarform.ucarname.$dirty && addcarform.ucarname.$invalid" class="error-msg col-lg-offset-5 col-lg-7">        <span ng-show="addcarform.ucarname.$error.required"> car name required </span>	      </div>    </div>  </div>

on controller, have expression return function, i.e.: 

$scope.shouldshow = function() {       return $scope.addcarform.ucarname.$dirty && $scope.addcarform.ucarname.$invalid; }

and do: 

ng-show="shouldshow();"

just need make sure form on scope.


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