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How to Pass a List of Boxes Objects as URL Parameters

Learn how to effectively pass a list of `Boxes` objects as URL parameters using query strings, complete with practical examples. --- This video is based on the question https://stackoverflow.com/q/71587785/ asked by the user 'Hasan Altay' ( https://stackoverflow.com/u/14347147/ ) and on the answer https://stackoverflow.com/a/71593249/ provided by the user 'Serge' ( https://stackoverflow.com/u/11392290/ ) 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: Passing object list as URL parameters 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. --- Passing a List of Boxes Objects as URL Parameters: A Step-by-Step Guide In the world of web development, passing complex data like lists or objects as URL parameters can seem like a daunting challenge. Many developers encounter situations where they need to send structured data, such as a list of Boxes, to an API through a URL. In this post, we’ll explore how to convert a complex object like the Boxes list into a format suitable for URL parameters. The Problem Suppose you want to send an object list that includes various properties, such as text, coordinates, dimensions, and colors, to an API. Below is an example of the JSON object you may have: [[See Video to Reveal this Text or Code Snippet]] When trying to pass this list as URL parameters, a naive approach may look like this: [[See Video to Reveal this Text or Code Snippet]] Unfortunately, this format does not work as expected. The Solution To pass the list correctly, you’ll need to format the query parameters in a specific way. Instead of attempting to include the entire object as a JSON string, you will need to serialize each property of the objects in the list as individual query parameters. Here's how to do it: Step-by-Step Format Overview Your query string for the boxes should look like this instead: [[See Video to Reveal this Text or Code Snippet]] Breakdown of the Query Parameters Indexing: Each object in the list is indexed. For the first box, you use boxes[0] and for the second, boxes[1], and so on. Property Assignment: Each property of the object is appended to the URL as a key-value pair. For example: boxes[0].text corresponds to the text of the first box. boxes[0].x refers to the x-coordinate of the first box. Removing Special Characters: Make sure to remove any special characters such as # from color values, as these can cause issues. You can always add them back on the API side if needed. Complete URL Example Putting it all together, the complete API call would resemble: [[See Video to Reveal this Text or Code Snippet]] Conclusion Passing a list of Boxes objects into a URL can initially appear challenging. However, by carefully structuring your query parameters, you can easily transmit complex data to APIs. Remember to flatten the object structure into key-value pairs and index them appropriately, while ensuring individual character requirements are met. Next time you're faced with a similar situation, you’ll be well-equipped to convert your object list into URL parameters effectively!