Can you suggest a more efficient approach to optimizing these angular bindings?

I integrated a form into a view within my Angular JS 1.2.6 application.

<div class="container" ng-controller="LoginCtrl as signin">
 <div class="row">
  <div class="col-md-4">
  <form name="signin.myForm" novalidate autocomplete="off">
    <h1>Sign In</h1>
    <div class="form-group" ng-class="{'has-error': (signin.myForm.name.$error.required || signin.myForm.name.$error.minlength) && signin.myForm.name.$dirty}">
      <label>Name</label>
      <input class="form-control" type="text" name="name" ng-model="signin.myForm.data.name" required ng-minlength="3">
      <span class="help-block" ng-show="signin.myForm.name.$error.required && signin.myForm.name.$dirty" >Name is required.</span>
      <span class="help-block" ng-show="signin.myForm.name.$error.minlength && signin.myForm.name.$dirty" >Must be at least 3 characters.</span>
    </div>      
    <button class="btn btn-primary" ng-disabled="!signin.myForm.$valid" ng-click="signin.submit()">Sign in</button>
  </form>
</div>

The corresponding controller looks like this:

 app.controller('LoginCtrl', ['$log',function($log){
 var ctrl = this;

 ctrl.submit = function(){
 console.log(ctrl.myForm);

 if(ctrl.myForm.$valid){
   console.log('the form is valid');
   }
  };
}]);

Upon examination, the process of adding the form field's data to the same scope as the signin using

ng-controller="LoginCtrl as signin"
results in complex naming conventions for models and properties like
signin.myForm.name.$error.required

Is this the recommended approach? While it functions properly, as a beginner, this setup seems overly complicated. Is there a more effective practice for achieving the same outcome?

Answer №1

I believe it's more standard to utilize the approach illustrated below, where you assign elements to an injected $scope rather than this. This way, you can avoid the need for a namespace qualifier in the HTML references.

<div class="container" ng-controller="LoginCtrl">
 <div class="row">
  <div class="col-md-4">
  <form name="myForm" novalidate autocomplete="off">
    <h1>Sign In</h1>
    <div class="form-group" ng-class="{'has-error': (myForm.name.$error.required || myForm.name.$error.minlength) && myForm.name.$dirty}">
      <label>Name</label>
      <input class="form-control" type="text" name="name" ng-model="signin.myForm.data.name" required ng-minlength="3">
      <span class="help-block" ng-show="signin.myForm.name.$error.required && myForm.name.$dirty" >Name is required.</span>
      <span class="help-block" ng-show="myForm.name.$error.minlength && myForm.name.$dirty" >Must be at least 3 characters.</span>
    </div>      
    <button class="btn btn-primary" ng-disabled="!myForm.$valid" ng-click="submit()">Sign in</button>
  </form>
</div>

app.controller('LoginCtrl', ['$scope', '$log',function($scope, $log){

        $scope.submit = function(){
        console.log($scope.myForm);

        if($scope.myForm.$valid){
           console.log('the form is valid');
        }
    };
}]);

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