Скачать или смотреть Solving the Issue with SASS @ each Statement Not Working in Next.js

Discover why your SASS `@ each` statement isn't generating the expected CSS classes in Next.js and how to fix it effectively.
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This video is based on the question https://stackoverflow.com/q/66356950/ asked by the user 'Gerpea' ( https://stackoverflow.com/u/12937539/ ) and on the answer https://stackoverflow.com/a/66358836/ provided by the user 'Zsolt Meszaros' ( https://stackoverflow.com/u/6126373/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding the SASS @ each Statement Issue in Next.js

When working with SASS in your Next.js projects, you might encounter various puzzles that can hinder your development workflow. One of these tricky scenarios involves the @ each statement. If you’ve ever asked yourself, "Why is my SASS @ each statement not working in Next.js?", you're not alone. Let’s delve into the issue and find out how to resolve it efficiently.

The Problem: Generated Classes Not Working

You have a structured color scheme set up in your SASS files: an _colors.scss and a _variables.scss file. You aim to generate various CSS classes dynamically using the @ each loop, but somehow, the expected classes like .c-p, .bg-s, etc., are not working as intended. You’ve found that defining classes manually, such as .c-p, works just fine regardless of where or how you place them in your files, leading to frustration.

Example Structure

_colors.scss:

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

_variables.scss:

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

main.scss:

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

The Solution: Correctly Reference Variables in Your Loop

The crux of the problem lies in the way the variable placeholder is being referenced in your @ each loop. Rather than using the string name, you should be referencing the variable $name. By enclosing this variable in # {}, you're telling SASS to interpret the variable correctly when generating class names.

Corrected Code Example

To fix this issue, you need to update your _colors.scss as follows:

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

Why This Works

Variable Reference: Using the $name variable correctly ensures that the generated classes will reflect the keys of the $colors map, which in your case are p, s, t, and q.

Interpolation: The # {$name} syntax allows SASS to evaluate the variable and create dynamic class names based on the contents of the $colors list.

Conclusion

In short, the issue of the SASS @ each statement not generating CSS classes in Next.js is usually due to improper variable referencing. By correcting your use of the @ each loop and ensuring that you properly interpolate your variables, you can resolve this issue seamlessly. Now you can create dynamic, uniform styling for your components that can expand easily as your project grows.

Make sure to double-check your SASS syntax and remember that precision in variable names can make a significant difference in your stylesheets. Happy coding!