Utilize a directive to showcase information stored within the scope

Question

Utilize a directive to showcase information stored within the scope

Struggling to grasp the concept of directives and encountering a bug along the way.

To see my example in action, check out the codepen I've created here

In my scope called "movies," I have 3 movie titles that I want to display using a directive.

var app = angular.module('plunker', []);

app.controller('MainCtrl', function($scope) {
  $scope.movies = [
    {
      title: 'Star Wars',
      release_date: '10-11-2015'
    }, {
      title: 'Spectre',
      release_date: '25-12-2015'
    }, {
      title: 'Revenant',
      release_date: '02-03-2016'
    }
  ];
});

Additionally, I've implemented a directive as follows:

app.directive('movieOverview', function () {
  return {
    template: 'Name: {{movie.title}}',
    controller: 'MainCtrl'
  };
});

Here is the haml code snippet:

%html{"ng-app" => "plunker"}
  %body{"ng-controller" => "MainCtrl"}
    %movie-Overview

Although the directive does display "Name:" on the page, it's not showing the results from the scope as intended.

javascript angularjs angularjs-directive angularjs-scope angular-directive

Answer 1

Answer №1

Since there is no variable scope named movie, it is recommended to iterate through each object in order to access every element of the movies array and display the name of the movie by updating your template as shown below.

template: '<div ng-repeat="movie in movies">Name: {{movie.title}}</div>',

Additionally, make sure the directive uses lowercase letters such as movie-overview instead of movie-Overview.

OR

If you prefer not to modify the directive, you can simply utilize the ng-repeat directive when iterating through it, eliminating the need to alter the directive itself.

%html{"ng-app" => "plunker"}
  %body{"ng-controller" => "MainCtrl"}
    %movie-overview {"ng-repeat" => "movie in movies"}

Answer 2

Since there is no variable scope named movie, it is recommended to iterate through each object in order to access every element of the movies array and display the name of the movie by updating your template as shown below.

template: '<div ng-repeat="movie in movies">Name: {{movie.title}}</div>',

Additionally, make sure the directive uses lowercase letters such as movie-overview instead of movie-Overview.

OR

If you prefer not to modify the directive, you can simply utilize the ng-repeat directive when iterating through it, eliminating the need to alter the directive itself.

%html{"ng-app" => "plunker"}
  %body{"ng-controller" => "MainCtrl"}
    %movie-overview {"ng-repeat" => "movie in movies"}

Answer 3

Answer №2

After reviewing your code, I have identified a couple of issues.

Firstly, it seems that in your template you are referencing movie.title, but in your controller, you are creating an array of objects and assigning it to movies. This discrepancy is causing the issue where you are only seeing Name: without a movie title displayed. To rectify this, you need to update your directive as follows:

app.directive('movieOverview', function () {
  return {
    template: 'Name: {{movies[0].title}}',
  };
});

By making this change, you should now see the title of the first movie in the movies array.

Secondly, if you intend to display all the movies since you have an array of them, the best approach would be to use the ng-repeat directive in your template. You can achieve this by modifying your directive like so:

app.directive('movieOverview', function () {
  return {
    template: '<p ng-repeat="movie in movies">Name: {{movie.title}}</p>'
  };
});

With this adjustment, each <p> tag will be repeated for each movie in your array, allowing you to see a list of all three movies on your page.

Answer 4

After reviewing your code, I have identified a couple of issues.

Firstly, it seems that in your template you are referencing movie.title, but in your controller, you are creating an array of objects and assigning it to movies. This discrepancy is causing the issue where you are only seeing Name: without a movie title displayed. To rectify this, you need to update your directive as follows:

app.directive('movieOverview', function () {
  return {
    template: 'Name: {{movies[0].title}}',
  };
});

By making this change, you should now see the title of the first movie in the movies array.

Secondly, if you intend to display all the movies since you have an array of them, the best approach would be to use the ng-repeat directive in your template. You can achieve this by modifying your directive like so:

app.directive('movieOverview', function () {
  return {
    template: '<p ng-repeat="movie in movies">Name: {{movie.title}}</p>'
  };
});

With this adjustment, each <p> tag will be repeated for each movie in your array, allowing you to see a list of all three movies on your page.

Utilize a directive to showcase information stored within the scope

Answer №1

Answer №2

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