Скачать или смотреть Solving the Bulma Variables Issue with ngClass in Angular 2+

Discovering why `Bulma` variables don't change with `ngClass` in `Angular`, and how to smoothly fix these issues with CSS variables.
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Solving the Bulma Variables Issue with ngClass in Angular 2+

When working with Angular and Bulma, a popular CSS framework, you might encounter situations where your intended styling doesn't apply as expected. A common problem arises when trying to utilize Bulma variables alongside Angular's ngClass attribute, as seen in a scenario where tooltip background colors fail to change. In this guide, we will break down the problem, the underlying causes, and provide a clear solution to ensure your tooltips and themes work as intended.

The Problem

Context

In an Angular component, there was an attempt to dynamically change tooltip colors using Bulma variables depending on the theme (dark or light). However, upon compilation, it was discovered that the tooltip colors remained at their default values, rendering the intended dynamic styling ineffective.

Code Snippet Example

Here's a brief example of the relevant code involved:

[[See Video to Reveal this Text or Code Snippet]]

[[See Video to Reveal this Text or Code Snippet]]

The defined SCSS variables were not being applied as intended.

Solution

To resolve this issue, the key is to utilize CSS variables instead of SCSS variables. CSS variables provide better dynamic behavior and work well with ngClass changes in Angular. Here’s how you can implement these changes step-by-step:

Step 1: Define CSS Variables

Update your SCSS code to define CSS variables instead of using SCSS variables.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Utilize the CSS Variables

Next, replace your SCSS variable references with CSS variables. This means changing your tooltip color definitions to utilize var(--tooltip-background-color).

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Confirm Angular Styles Include SCSS

Make sure your Angular configuration includes the custom SCSS file so that it applies styles correctly across your components.

Example configuration in angular.json:

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Testing

With these changes in place, re-run your application and test to ensure that the tooltip background colors dynamically adjust according to the specified theme (dark or light).

Conclusion

Handling dynamic styles in Angular when using Bulma can be challenging, especially with SCSS variables. By converting to CSS variables, you can harness the best of both Angular's dynamic capabilities and Bulma's elegant styling. This approach ensures your tooltips and other styles reflect the intended changes based on your application’s theme seamlessly.

Implementing this solution should lead to a significant improvement in your application’s responsiveness and aesthetic consistency. Happy coding!