CODEWITHSUNDEEP
javascriptangularjshtml-select
Isuru Pathirana
Isuru Pathirana

Reputation: 1118

Why this select box is not displaying the 'Select One' option?

I have a select box which is dynamically populated with ng-option. I want it to display "Select one" by default. I used the following html hoping to achieve this.

<select id="productType" name="productType" class="col-lg-12 col-xs-12 form-control"
    ng-model="context.product"
    ng-options="product.value as product.name for product in data.products"
    ng-change="loadAccessMethods()" required>
    <option value="" disabled>Select one</option>
</select>

But this is what I see when I run the application.

enter image description here

Update : I am using Angular 1.6.5

Update : Vivz added a working code snippet with Angular 1.4.x in his answer. But it does not work with Angular 1.6.x. Can any one point out why this is broken in Angular 1.6.x ?

angular.module("App",[])
.controller("AppCtrl",function($scope){
$scope.context = {
    product: '',
    accessMethod: '',
    workOrderNum: 0
};

$scope.data = {
    products: [
        { name: 'ABC', value: '0', type: 't1' },
        { name: 'XYZ', value: '1', workflowType: 't2' }
    ]
};

});
<!DOCTYPE html>
<html ng-app="App">
  <head>
    <meta charset="utf-8" />
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
    <!-- <script data-require="[email protected]" data-semver="1.4.9" src="https://code.angularjs.org/1.4.9/angular.js"></script> -->
    <script src=" https://opensource.keycdn.com/angularjs/1.6.5/angular.min.js "></script>
    <script src="script.js"></script>
  </head>

  <body>
    <div ng-controller="AppCtrl">
    <select id="productType" name="productType" class="col-lg-12 col-xs-12 form-control"
    ng-model="context.product"
    ng-options="product.value as product.name for product in data.products"
    ng-change="loadAccessMethods()" required>
    <option value="" disabled>Select one</option>
</select>
     </div>
  </body>

</html>

Upvotes: 1

Views: 98

Answers (4)

Mitul Patel
Mitul Patel

Reputation: 154

Use This Code It would solved your Problem

<select ng-model="context.product" ng-options="product.name for product in data.products">
<option value="" disabled>Select one</option>
</select>

Upvotes: 0

CIPHER007
CIPHER007

Reputation: 376

I think you are searching the solution like below run snippet and let me know if it's working for you

var app=angular.module("App",[]);
app.controller("AppCtrl",function($scope){
$scope.context = {
    accessMethod: '',
    workOrderNum: 0
};
$scope.data = {
    products: [
        { name: 'ABC', value: '0', type: 't1' },
        { name: 'XYZ', value: '1', workflowType: 't2' }
    ]
};
$scope.loadAccessMethods = function() {
console.log($scope.context.product);
}
});
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<!DOCTYPE html>
<html ng-app="App">
  <head>
    <meta charset="utf-8" />
    <script data-require="[email protected]" data-semver="1.4.9" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.5/angular.min.js"></script>
    <script src="script.js"></script>
  </head>

  <body>
    <div ng-controller="AppCtrl">
    <select id="productType" name="productType" class="col-lg-12 col-xs-12 form-control"
    ng-model="context.product"
    ng-options="product.value as product.name for product in data.products"
    ng-change="loadAccessMethods()" required>
    <option value="" ng-selected="true" ng-disabled="true">Select one</option>
</select>
     </div>
  </body>

</html>

I removed product from your $scope.context = { accessMethod: '', workOrderNum: 0 };

and use ng-selected="true" ng-disabled="true" for disable and select your value.

Upvotes: 0

Gaurav Srivastava
Gaurav Srivastava

Reputation: 3232

You can try a different approach like this:

var app = angular.module("App", []);
app.controller("AppCtrl", function($scope) {
  $scope.context = {
    product: '',
    accessMethod: '',
    workOrderNum: 0
  };
  $scope.data = {
    products: [{
        name: 'ABC',
        value: '0',
        type: 't1'
      },
      {
        name: 'XYZ',
        value: '1',
        workflowType: 't2'
      }
    ]
  };
  
  $scope.context.product1 = '';

});
<!DOCTYPE html>
<html ng-app="App">

<head>
  <meta charset="utf-8" />
  <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
  <!-- <script data-require="[email protected]" data-semver="1.4.9" src="https://code.angularjs.org/1.4.9/angular.js"></script> -->
  <script src=" https://opensource.keycdn.com/angularjs/1.6.5/angular.min.js "></script>
  <script src="script.js"></script>
</head>

<body>
  <div ng-controller="AppCtrl">
    <h1> First Apporach</h1>
    <select id="productType" name="productType" class="col-lg-12 col-xs-12 form-control" ng-model="context.product" ng-change="loadAccessMethods()" required>
    <option value="" disabled>Select one</option>
    <option ng-value="product.value" ng-repeat=" product in data.products">{{product.name}}</option>
    </select>
    
    
    <h2>Second approaach</h2>
     <span ng-init="data.products.unshift({ name: 'Select one', value: ''});"></span>
    <select id="productType" name="productType" class="col-lg-12 col-xs-12 form-control"
    ng-model="context.product1"    
    ng-change="loadAccessMethods()" ng-options="product.value as product.name for product in data.products" required>
</select>
  </div>


</body>

</html>

Upvotes: 1

Vivz
Vivz

Reputation: 6620

The above code of yours seems to work fine.

var app=angular.module("App",[]);
app.controller("AppCtrl",function($scope){
$scope.context = {
    product: '',
    accessMethod: '',
    workOrderNum: 0
};
$scope.data = {
    products: [
        { name: 'ABC', value: '0', type: 't1' },
        { name: 'XYZ', value: '1', workflowType: 't2' }
    ]
};

});
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<!DOCTYPE html>
<html ng-app="App">
  <head>
    <meta charset="utf-8" />
    <script data-require="[email protected]" data-semver="1.4.9" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.5/angular.min.js"></script>
    <script src="script.js"></script>
  </head>

  <body>
    <div ng-controller="AppCtrl">
    <select id="productType" name="productType" class="col-lg-12 col-xs-12 form-control"
    ng-model="context.product"
    ng-options="product.value as product.name for product in data.products track by $index"
    ng-change="loadAccessMethods()" required>
    <option value="" disabled>Select one</option>
</select>
     </div>
  </body>

</html>

Upvotes: 1

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