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Скачать или смотреть How to Create a Variable from Response Body in Postman

  • vlogize
  • 2025-03-21
  • 21
How to Create a Variable from Response Body in Postman
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Описание к видео How to Create a Variable from Response Body in Postman

Learn how to easily generate variables from your API response body in Postman using JavaScript. This guide provides step-by-step instructions to streamline your testing process.
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This video is based on the question https://stackoverflow.com/q/74362465/ asked by the user 'pedro.ribeiro' ( https://stackoverflow.com/u/20450318/ ) and on the answer https://stackoverflow.com/a/74366249/ provided by the user 'Jan Ochwat' ( https://stackoverflow.com/u/11643883/ ) 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: How to create a variable from response body in Postman?

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.

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How to Create a Variable from Response Body in Postman

If you're working with APIs in Postman, you may find yourself needing to extract and store certain values from a response body as variables. This can be especially useful when you want to use these values in subsequent requests or tests. In this post, we'll explore how to create a variable from the response body in Postman, using JavaScript to automate this process.

Understanding the Problem

Suppose you receive a response body that includes various identifiers and roles, and you want to define variables for each one. Here’s an example of a typical response body:

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

You may want to create global variables for each URL based on the identifier. For example:

credentials_url for the credentials identifier

tokens_url for the tokens identifier

In your initial approach, you struggled with accessing the identifiers and checking them within a script.

Step-by-Step Solution

To successfully extract and store the variables from your API response in Postman, follow these straightforward steps:

1. Access the Response Body

First, you'll want to parse the response body and access the endpoints data. Here’s how you can do that:

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

2. Loop Through Each Endpoint

Next, use a loop to iterate over each endpoint in the endpoints array. This will allow you to dynamically access each identifier and role.

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

3. Create and Store the Variables

Inside your loop, you will create or update the global variable based on the identifier and push the corresponding url into an array. Here’s the complete code:

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

4. Access the Variables

After executing the above script, you will be able to access the URLs stored in the variables. For instance, you can retrieve the credentials_url or tokens_url as follows:

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

Summary

By following this guide, you should be able to automatically create variables from your API response in Postman. This approach helps in organizing your testing process and makes it easier to reference various endpoint URLs in subsequent requests.

Key Takeaways:

Use JavaScript in Postman to parse your API response.

Loop through the response data to dynamically create global variables.

Access these variables later in your tests or requests.

With these steps, you'll simplify your testing workflows and make your development process more efficient. Happy testing!

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