How to build Shopify cart and checkout validation functions

In this detailed workshop, We walk you through the intricacies of creating functions for checkout and cart validation on Shopify. Learn about the challenges of validation, the significance of server-side validations, and how to utilize Shopify's powerful API for enhancing e-commerce functionality.

Understand the difference between client-side and server-side validations, set up a partner's account, implement validation functions using TypeScript, and explore the benefits of integrating with the Shopify ecosystem. The workshop also touches on using GraphQL for headless storefronts and accessing localization and metafields for advanced configurations. Join the community on GitHub and Discord for more insights and support.

・ Chapters

00:00 Introduction and workshop overview
00:07 Challenges in workshop production
01:16 Community and resources
01:58 Introduction to checkout and cart validation
02:33 Understanding validation
04:18 Setting up your Shopify partner account
04:38 Creating your first validation function
05:36 Building and testing the function
16:37 Deploying and activating the function
19:59 Using the function in a storefront
25:59 Debugging the storefront
26:07 Handling variant IDs and errors
26:50 Cart validation and error messages
28:33 Exploring cart permalinks
30:19 Customizing cart and checkout validation
32:04 API References and troubleshooting
35:30 Implementing buyer identity rules
44:42 Localization and metafields
52:18 Deploying and versioning extensions
53:26 Conclusion and community engagement

This workshop by Odestry provides a comprehensive guide on building functions for cart and checkout validation in Shopify. The presenter explains the challenges faced due to the editing process, emphasizing the value of content over animations. The script covers creating validation functions using Shopify's API, underscoring the importance of server-side validation over client-side validation for resilience and consistency. It includes a step-by-step setup in a Shopify development environment, illustrating how to use TypeScript, how to initialize and deploy extensions, and how to handle customer-specific logic and configurations. Key concepts like using Shopify's CLI for building and deploying functions, accessing GraphQL for input and outputs, navigating the Shopify Partner Dashboard, and managing cart validations across different platforms, including storefront APIs, are also discussed.

Happy Coding!

・Keep in touch with us

・Join the community

[FarmLinkHawaii]

Super helpful video. Thanks Younes. FYI, there's a Chrome setting to disalbe the swipe left/right to go back. It annoys me, too!

[faridmovsumov]

Tutorial was great but challenging because of unexpected 500 errors, you managed well Youness 👍

[AliIsaiev]

Thank you very much for such content! What do you think about checking address validation?

[DanielDuenas-ierw]

Super helpful!
I'm wondering if i can use this checkout-validation template to set a new price for every cartLineitem.
For example, if a buyer have 1 quantity of item A, it shows the base price.
But, if the buyer have 2x or more, it shows basePrice with 10% off.

[MayankShokeen-mf]

Hey, the video was quite informative and helpful! its just that I'm unable to implement the global/shop level metaobjects being used inside the function logic for a cart checkout function itself. If you could please provide some help with that?

[pixobe]

Thanks for the amazing video, may I know how we can show custom image/dynamic image on product cart page?

[francismori]

Will that work with draft orders? Once the customer tries to checkout for instance

[nickdrishinski]

Awesome video. I was curious how the error messages automatically show up in the theme UI. I get the API response being returned, but how is the theme automatically showing the error message on the product and cart pages?

[balajid-ni]

Hi where is the slack Url ? i didn't find it in description ?

[casamaxstore]

Hi, can I do this without a Shopify Plus plan? It's 2500 USD a month and i'm not willing to spend that amount. Or does creating a customized client side checkout require it?

[chanmyaemaung]

I have come across a valuable resource on YouTube that offers a tutorial on building a Shopify App. As a Shopify Theme developer, I would greatly appreciate the opportunity to create an exceptional app. I would appreciate it if you could consider creating a new tutorial that focuses on building a useful app rather than using example apps like Shopify's documentation does. ❤