Boosting data transfer with AngularJS

Question

Boosting data transfer with AngularJS

I am currently working on an AngularJS application where I use $scope.forms to generate various input fields in the HTML section through ng-repeat.

One thing that is puzzling me is how to populate the values: [] with data from the

attributes: ["title", "firstname", "lastname", "address"]

inputs.

Could someone please help me understand how to transfer the input values into the values key? Or is there a more efficient solution you could suggest?

function sampleCtrl($scope) {

  $scope.forms = [
    {
      title: "Something",
      attributes: ["title", "firstname", "lastname", "address"],
      values: [] //I need the values from the attributes here
    },
    {
      title: "Something else",
      attributes: ["title", "name", "job", "address"],
      values: [] //I need the values from the attributes here
    }   ]; }

http://jsfiddle.net/U3pVM/18198/

javascript angularjs

Answer 1

Answer №1

Check out @Grundy's response for a straightforward solution without modifying your model.

May I offer an alternative approach that considers using ng-model to connect the input value? The idea is to represent the attribute-value pair as a tangible entity. For instance:

$scope.forms = [
    {
        title: "Something",
        pairs: [{label: "title", value: ""}, {label: "firstname", value: ""}]
    }
];

This format of the view model facilitates easier binding in the interface:

<div ng-repeat="pair in form.pairs">
    <input type="text" placeholder="{{pair.label}}" ng-model="pair.value" />
</div>

I propose this method because the $scope integrates smoothly with views when structured appropriately. If an alternative structure (such as an array of values) is required for backend purposes, you can convert the view model back accordingly. For example:

var values = $scope.forms[0].pairs.map(function(p) {
    return p.value;
});

Take a look at this modified fiddle for a comprehensive demonstration.

Answer 2

Check out @Grundy's response for a straightforward solution without modifying your model.

May I offer an alternative approach that considers using ng-model to connect the input value? The idea is to represent the attribute-value pair as a tangible entity. For instance:

$scope.forms = [
    {
        title: "Something",
        pairs: [{label: "title", value: ""}, {label: "firstname", value: ""}]
    }
];

This format of the view model facilitates easier binding in the interface:

<div ng-repeat="pair in form.pairs">
    <input type="text" placeholder="{{pair.label}}" ng-model="pair.value" />
</div>

I propose this method because the $scope integrates smoothly with views when structured appropriately. If an alternative structure (such as an array of values) is required for backend purposes, you can convert the view model back accordingly. For example:

var values = $scope.forms[0].pairs.map(function(p) {
    return p.value;
});

Take a look at this modified fiddle for a comprehensive demonstration.

Answer 3

Answer №2

You might want to take a look at ng-model. In the model, you can use values[$index] so that the values in the values array correspond to the order of the values in the attributes array.

function sampleCtrl($scope) {

  $scope.forms = [
    {
      title: "Something",
      attributes: ["title", "firstname", "lastname", "address"],
      values: [] //I would like to have the values from the attributes here
    },
    {
      title: "Something else",
      attributes: ["title", "name", "job", "address"],
      values: [] //I would like to have the values from the attributes here
    }
  ];

}

body {
    font-family: courier new;
}

h1 {
    font-size: 24px;
    margin: 0 0 20px;
}

h2 {
    font-size: 18px;
}

.form {
    margin: 0 0 25px;
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app>
    <h1>Form</h1>
    <div ng-controller="sampleCtrl">
      
        <div class="form" ng-repeat="form in forms">
          <h2>{{form.title}}</h2>     
          <div ng-repeat="input in form.attributes">
              <input type="text" ng-model="form.values[$index]" placeholder="{{input}}" />
          </div>
            {{form.attributes}}
            {{form.values}}
        </div>
      
    </div>
  </div>

Answer 4

You might want to take a look at ng-model. In the model, you can use values[$index] so that the values in the values array correspond to the order of the values in the attributes array.

function sampleCtrl($scope) {

  $scope.forms = [
    {
      title: "Something",
      attributes: ["title", "firstname", "lastname", "address"],
      values: [] //I would like to have the values from the attributes here
    },
    {
      title: "Something else",
      attributes: ["title", "name", "job", "address"],
      values: [] //I would like to have the values from the attributes here
    }
  ];

}

body {
    font-family: courier new;
}

h1 {
    font-size: 24px;
    margin: 0 0 20px;
}

h2 {
    font-size: 18px;
}

.form {
    margin: 0 0 25px;
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app>
    <h1>Form</h1>
    <div ng-controller="sampleCtrl">
      
        <div class="form" ng-repeat="form in forms">
          <h2>{{form.title}}</h2>     
          <div ng-repeat="input in form.attributes">
              <input type="text" ng-model="form.values[$index]" placeholder="{{input}}" />
          </div>
            {{form.attributes}}
            {{form.values}}
        </div>
      
    </div>
  </div>

Answer 5

Answer №3

Here are the updates I made to your code snippet:

<div ng-app>
    <h1>My Form</h1>
    <div ng-controller="exampleCtrl">

        <div class="form-section" ng-repeat="section in sections">
          <h2>{{section.title}}</h2>     
          <div ng-repeat="field in section.fields" ng-init="modified = []">
              <input type="text" placeholder="{{field}}" ng-init="modified[$index] = section.values[$index]" ng-model="modified[$index]"/>
          </div>
       </div>     
   </div>
</div>

http://jsfiddle.net/ABC123/45678/

Answer 6

Here are the updates I made to your code snippet:

<div ng-app>
    <h1>My Form</h1>
    <div ng-controller="exampleCtrl">

        <div class="form-section" ng-repeat="section in sections">
          <h2>{{section.title}}</h2>     
          <div ng-repeat="field in section.fields" ng-init="modified = []">
              <input type="text" placeholder="{{field}}" ng-init="modified[$index] = section.values[$index]" ng-model="modified[$index]"/>
          </div>
       </div>     
   </div>
</div>

http://jsfiddle.net/ABC123/45678/

Answer 7

Answer №4

Here is a simple solution: Check out this updated fiddle

All you need to do is add an ng-model, which will point to the same index in both the attributes and values arrays.

<div ng-app>
    <h1>Form</h1>
    <div ng-controller="sampleCtrl">

        <div class="form" ng-repeat="form in forms">
          <h2>{{form.title}}</h2>     
          <div ng-repeat="input in form.attributes">
              <input type="text" ng-model="form.values[$index]" placeholder="{{input}}" />
          </div>
        </div>
        <button ng-click="haha()">Test!</button>
    </div>
  </div>

No changes in JS are needed, just added a new function called haha() for testing purposes

function sampleCtrl($scope) {

  $scope.forms = [
    {
      title: "Something",
      attributes: ["title", "firstname", "lastname", "address"],
      values: [] //here I want the values from the attributes
    },
    {
      title: "Something else",
      attributes: ["title", "name", "job", "address"],
      values: [] //here I want the values from the attributes
    }
  ];

    $scope.haha = function(){
        console.log($scope.forms);
    }

}

Answer 8

Here is a simple solution: Check out this updated fiddle

All you need to do is add an ng-model, which will point to the same index in both the attributes and values arrays.

<div ng-app>
    <h1>Form</h1>
    <div ng-controller="sampleCtrl">

        <div class="form" ng-repeat="form in forms">
          <h2>{{form.title}}</h2>     
          <div ng-repeat="input in form.attributes">
              <input type="text" ng-model="form.values[$index]" placeholder="{{input}}" />
          </div>
        </div>
        <button ng-click="haha()">Test!</button>
    </div>
  </div>

No changes in JS are needed, just added a new function called haha() for testing purposes

function sampleCtrl($scope) {

  $scope.forms = [
    {
      title: "Something",
      attributes: ["title", "firstname", "lastname", "address"],
      values: [] //here I want the values from the attributes
    },
    {
      title: "Something else",
      attributes: ["title", "name", "job", "address"],
      values: [] //here I want the values from the attributes
    }
  ];

    $scope.haha = function(){
        console.log($scope.forms);
    }

}

Boosting data transfer with AngularJS

Answer №1

Answer №2

Answer №3

Answer №4

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