Guide to injecting partial manually in an AngularJS controller

Question

Guide to injecting partial manually in an AngularJS controller

As a newcomer to the Angular world, I am facing challenges when it comes to controlling the loading of partials in my application. When the value of a drop-down changes, I retrieve the template URL (the URL of the partial I want to display) from the server. My goal is to use this template URL to dynamically load the corresponding partial onto my page. I understand that inserting a partial can be achieved using directives, but I'm unsure how to update the template URL within the directive to load different partials. In other words, I have a "change partial method" in my controller that fetches the template URL from the server. When the ng-change event is triggered, I call this function. How can I utilize this template URL to render the partial in my designated placeholder?

javascript angularjs angularjs-directive

Answer 1

Answer №1

To easily load a partial, you can utilize the ng-include directive and connect it to a variable containing the URL of the partial. This variable can then be linked to a dropdown list or any other interactive element. As a result, selecting an item from the dropdown list will dynamically update the partial URL, triggering the loading of the corresponding partial.

Take a look at the code snippet below (or visit this Plunkr demo to experiment with it yourself) to see how this functionality can be implemented:

angular.module('app', [])
  .controller("MainCtrl",
    function() {
      this.partialId = 1;

      this.getPartialUrl = function() {
        return 'partial' + this.partialId + '.html';
      }
  });

<!DOCTYPE html>
<html ng-app="app">

  <head>
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

    <script type="text/ng-template" id="partial1.html">
      <h2>Partial 1</h2>
      <p>Content loaded from FIRST partial</p>
    </script>
    <script type="text/ng-template" id="partial2.html">
      <h2>Partial 2</h2>
      <p>Content loaded from SECOND partial</p>
    </script>
  </head>

  <body ng-controller="MainCtrl as Main">
    <h1>Partials from dropdown</h1>

    <select ng-model="Main.partialId">
      <option value="1">Partial 1</option>
      <option value="2">Partial 2</option>
    </select>
    
    <div ng-include="Main.getPartialUrl()"></div>
  </body>

</html>

Answer 2

To easily load a partial, you can utilize the ng-include directive and connect it to a variable containing the URL of the partial. This variable can then be linked to a dropdown list or any other interactive element. As a result, selecting an item from the dropdown list will dynamically update the partial URL, triggering the loading of the corresponding partial.

Take a look at the code snippet below (or visit this Plunkr demo to experiment with it yourself) to see how this functionality can be implemented:

angular.module('app', [])
  .controller("MainCtrl",
    function() {
      this.partialId = 1;

      this.getPartialUrl = function() {
        return 'partial' + this.partialId + '.html';
      }
  });

<!DOCTYPE html>
<html ng-app="app">

  <head>
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

    <script type="text/ng-template" id="partial1.html">
      <h2>Partial 1</h2>
      <p>Content loaded from FIRST partial</p>
    </script>
    <script type="text/ng-template" id="partial2.html">
      <h2>Partial 2</h2>
      <p>Content loaded from SECOND partial</p>
    </script>
  </head>

  <body ng-controller="MainCtrl as Main">
    <h1>Partials from dropdown</h1>

    <select ng-model="Main.partialId">
      <option value="1">Partial 1</option>
      <option value="2">Partial 2</option>
    </select>
    
    <div ng-include="Main.getPartialUrl()"></div>
  </body>

</html>

Guide to injecting partial manually in an AngularJS controller

Answer №1

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