Скачать или смотреть Resolving the Infinite Loader Issue with fetch in Shopify

Discover how to prevent infinite reloads in your Shopify store using the `fetch` function, by implementing cookie and local storage conditions effectively.
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This video is based on the question https://stackoverflow.com/q/68287183/ asked by the user 'Hugo Fredzer' ( https://stackoverflow.com/u/16399621/ ) and on the answer https://stackoverflow.com/a/68287716/ provided by the user 'Ahmed Saeed' ( https://stackoverflow.com/u/8691774/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Resolving the Infinite Loader Issue with fetch in Shopify

When developing on the Shopify platform, one common issue that developers encounter is the problem of an infinite loop when attempting to redirect users based on their geographical location. This often happens when you're trying to set query parameters—like currency conversion—in your application using the fetch API. In this guide, we'll explore why this happens and provide a straightforward solution to ensure your website functions smoothly without unnecessary reloads.

The Problem: Infinite Loading

In the example you're working with, you're trying to retrieve the user's country code through a fetch request and then use it to alter the page URL according to their location. This is generally a great approach to enhancing user experience; however, if you aren't careful with how you change the URL, it can cause the browser to reload the page indefinitely.

The Current Implementation

The initial implementation utilizes the following code snippet:

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While this code effectively redirects users, the issue lies in how the URL is modified. Every time the window.location.host is changed, it refreshes the page. If the condition for changing the URL is met repeatedly, the result is an infinite loop.

The Solution: Use window.location.search

To fix this problem, instead of changing window.location.host, you should modify window.location.search. This allows you to update the query parameters without reloading the entire page unnecessarily.

Here's a step-by-step breakdown of the improved solution:

Step 1: Fetch the Country Code

Begin by making the request to get the user's country code:

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

Step 2: Determine Desired URL Parameters

Next, set up a variable to hold your valid query parameters based on the country code:

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

Step 3: Check for Existing Query Parameters

Before applying the new query parameters, add a safety check to ensure you're not overwriting what's already in the URL unnecessarily:

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

Complete Revised Code

Putting it all together, your revised fetch code would be as follows:

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

Summary

By modifying your approach to changing URLs within your Shopify store, you can avoid the frustrating infinite loading issue. The key takeaway is to use window.location.search instead of changing the host directly and to always check the current search parameters before making changes.

Implement these changes and enhance your Shopify store's user experience seamlessly. If it helped, don't forget to share your own experiences or any further questions in the comments below!