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Learn how to easily access and display specific elements from JSON data in Pug (formerly Jade). Follow our step-by-step guide for effective integration!
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This video is based on the question https://stackoverflow.com/q/69817072/ asked by the user 'Jordan Torres' ( https://stackoverflow.com/u/11429458/ ) and on the answer https://stackoverflow.com/a/69822988/ provided by the user 'Old Geezer' ( https://stackoverflow.com/u/936293/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Read an Object in Jade (Pug) for Displaying JSON Data

If you're working with Pug (previously known as Jade) and need to display specific values from a JSON object, you may encounter some challenges. In this guide, we will walk you through how to read an object, like actualPrice from a nested JSON object sent from your backend. Let’s address a common issue that developers face when handling such JSON data in Pug templates.

The Problem

You have a JSON array containing data about prices, and you want to extract the actualPrice of a specific item, for example, space2. Here's a snippet of the JSON data you're working with:

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You’ve tried accessing the actualPrice using prices.space2.actualPrice and looping through the array with a for loop, but you’re not obtaining the expected results. Let’s unravel this step-by-step.

Understanding the JSON Structure

In your JSON array, each item is an object that contains a single property (like space2, h20, or space). Each of these properties is another object housing details like actualPrice, oldPrice, and id. Due to this structure, accessing space2 directly from the array is not straightforward.

Solution: Accessing Data in Pug

To display the actualPrice of space2, you can utilize Pug's looping capabilities combined with conditional statements. Here’s how you can do it:

Step 1: Define Your Data

First, make sure your JSON data is defined and passed correctly to your Pug template:

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Step 2: Use Pug to Display the Data

Within your Pug template, you will need to loop through the array and check if the current object contains the space2 property. Here’s a way to do that:

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What Happens Here?

Looping: The each statement iterates over every object in the Data array.

Conditional Check: The if statement checks if the current object has a property space2.

Displaying the Value: If it exists, it uses interpolation (# {}) to show the actualPrice to the user.

Result Representation

When you implement the code correctly, your output will look something like this:

Only space2: $99.990

Considerations for Data Structure

While the above solution works, it is worth pondering if the arrangement of your JSON data is optimal. Accessing individual properties can become cumbersome, especially if you need to display multiple items at once. Consider reorganizing your data like so:

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

This structure allows you to access actualPrice directly without needing to check nested properties, making your code cleaner and easier to maintain.

Conclusion

Navigating through JSON data in Pug can initially be challenging due to its structure, but with the right looping and conditional logic, you can display specific values effectively. By considering a simpler data structure, you can streamline your Pug templates further. Happy coding!