Angular.js can dynamically add a class to an element based on the current page being viewed

Currently, my goal is to assign the class post to my div with id #wrap when I am on the page /post. Here's what I have so far:

$routeProvider

when('/post', {
    templateUrl : 'views/post.php',
    controller  : 'postCtrl'
})

Controller

carolvaladares.controller('postCtrl', function($scope) {
    $scope.post = true;
});

HTML

<div id="wrap" ng-class="{true: 'post'}[post]">

When I access the /post route, $scope.post is set to true. If $scope.post is true, then add the class post to the #wrap element.

However, the issue arises when I navigate to /post; it doesn't recognize $scope.post unless I manually use ng-controller="postCtrl".

Thank you in advance for your help.

-- EDITED --

After further investigation, I found that $scope.post returns true when using {{post}} on the /post page. Nevertheless, I still struggle with implementing ng-class.

-- EDITED --

The problem persists because the #wrap element is outside of my ng-view. As a result, it seems that achieving my intended functionality may not be feasible with this current approach.

Answer №1

It seems like the issue lies within your HTML structure:

<div id="wrap" ng-class="{ className: post === true }">

This should resolve the problem.

Answer №2

Experiment with

<section id="container" ng-class="{'message': message}">

Remember to include the ng-app as well

Answer №3

When using ng-class, the syntax is as follows:

ng-class="{'classToApply': condition}"

The class 'classToApply' will only be added when the condition evaluates to true.

Therefore, in your specific scenario, to add the 'post' class, you would use

<div id="wrapper" ng-class="{'post': post}">

Answer №4

<div id="wrap" ng-class="{true: 'post'}[post]">

Your current ng-class statement should be functioning correctly. To verify, you can modify the variable post with a different value as shown below:

<div id="wrap" ng-class="{true: 'post'}[someValue]">

In addition to this, here are some alternative solutions that you may want to consider:

Solution 1:

<div id="wrap" ng-class="{'post': post}">

Solution 2:

<div id="wrap" ng-class="post ? 'post' : 'somethingelse' }">

Answer №5

Maybe you could consider implementing a solution similar to this:

when('/article', {
    templateUrl : 'views/article.php',
    controller  : 'articleCtrl',
    activetab: 'article'
})

Additionally, remember to include:

<div id="container" ng-class="{article: $route.current.activetab == 'article'}"">

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