Скачать или смотреть How to Flatten an Array into an Object Using JQ

A step-by-step guide on using JQ to transform arrays into objects for easier data parsing.
---
This video is based on the question https://stackoverflow.com/q/64288520/ asked by the user 'I'm a TI calculator' ( https://stackoverflow.com/u/12001758/ ) and on the answer https://stackoverflow.com/a/64288625/ provided by the user 'ggorlen' ( https://stackoverflow.com/u/6243352/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: JQ to flatten an array into an object

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Flatten an Array into an Object Using JQ

Dealing with JSON data can sometimes feel overwhelming, especially when you need to manipulate it for easier processing. One common task is flattening an array of objects into a single object. In this post, we'll explore how to tackle this problem using JQ, a powerful tool for working with JSON data.

The Problem: Flattening an Array

Imagine you have the following JSON array:

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

You want to flatten this array into a single object where each channel title becomes a key, and the corresponding URL becomes its value. The desired output format looks like this:

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

The Solution: Using JQ

To achieve this transformation, you can use JQ in a simple command. Here's how to do it step-by-step:

Step 1: Use the map Function

The first step involves mapping each object in the array to key-value pairs where the title becomes the key and the URL becomes the value. This can be done using the map function.

Step 2: Combine Key-Value Pairs with add

Once you have a list of key-value pairs from the map function, the next step is to merge them all into a single object using the add function. This combines all the resulting objects into one.

Putting It All Together

Here is the complete JQ command you need to run:

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

Explanation of the Command

map({(.title): .url}): This part iterates over each element of the array, creating a new object for each item where the key is the title and the value is the associated url.

add: This function merges all of the objects produced by the map function into a single object.

What to Expect

Running this command will provide you with the flattened object:

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

Conclusion

By using JQ, you can easily flatten arrays into objects, making it simpler to parse and work with JSON data on low-power devices or in any scenario where streamlined data is beneficial. With the clear command structure, you can handle various JSON manipulation tasks more effectively.

Take the opportunity to practice this technique and explore the vast features of JQ to enhance your JSON processing skills. Happy coding!