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Learn how to use Django's ListView to conditionally style dates in your template, focusing on highlighting specific dates that match today's date.
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How to Highlight Expiring Date in Django ListView with Style

When working with Django's ListView, developers often come across the need to visually differentiate certain items based on conditions. A common requirement is to mark dates that are particularly significant, such as highlighting expiration dates in red when they match today’s date. In this article, we will explore an elegant solution to achieve this by annotating the queryset and applying conditional formatting in the template.

Setting Up Your Django ListView

Let's start by ensuring that our VechileListView class is structured properly. Here’s a look at the initial code structure:

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

In this code snippet, we define a ListView for the Vechile model. The goal now is to manipulate the display of the tanggal_stnk field based on whether it expires today or not.

Annotate the QuerySet

To manage our conditional logic, we will leverage Django's ORM capabilities. We can annotate our queryset to add an additional field that tells us if the expiration date is today.

Here's how you can do that:

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

Breakdown of the Code

Annotation: We are using annotate() to create a virtual field expires_today that evaluates if the tanggal_stnk equals today’s date.

QuerySet: This queryset will still function as expected but now carries additional context in its results.

Rendering it in the Template

Once we have our queryset set up, we can easily render the results in our Django template. The main task here is to check if expires_today is True and apply conditional styling accordingly.

Here’s how your template code should look:

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

Explanation of the Template Code

Conditional Rendering: The if statement within the td tag checks the virtual field expires_today. If it evaluates to True, it applies the style="color:red" inline CSS.

Result: This approach visually highlights the tanggal_stnk date in red for any records that have an expiration date matching today.

Conclusion

By following the above steps, you can effectively highlight specific rows in a Django ListView based on conditions you define. It not only improves usability but also enhances the visual appeal of your web application. Now, marking fields based on their date status is wonderfully streamlined and will engage your users more effectively. If you have any further questions or need assistance, feel free to reach out!