Improved Variable Validation in Terraform 1.9

Variable validation blocks are great for verifying values for inputs, but until now they've had a huge limitation. You couldn't reference anything in the validation block aside from the variable value itself. Terraform 1.9 addes support for referencing any other object in the same module, including other variables, local, data sources, and resources.
Let's see how it works! I'll cover:
🌮 Variable validation syntax
🌮 Referencing another variable value
🌮 Referencing a data source
Here are the links for everything I mentioned:
🔗 Terraform 1.9 release notes: github.com/hashicorp/terrafor...
🔗 Updated documentation: developer.hashicorp.com/terra...
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🌮 Other videos to check out:
📽️ Terraform Basics - Modules: • Terraform Basics: Modules
📽️ Managing Multiple Environments with Terraform: • Managing Multiple Envi...
📽️ Workload Identity with Terraform Cloud: • Using Workload Identit...
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Ned is a curious human with a knack for creating entertaining and informative content. With over 20 years in the industry, Ned brings real-world experience to all his creative endeavours, whether that's pontificating on a podcast, delivering live instruction, writing certification guides, or producing technical training videos. He has been a helpdesk operator, systems administrator, cloud architect, and product manager. In his newest incarnation, Ned is the Founder of Ned in the Cloud LLC. As a one-man-tech juggernaut, he develops courses for Pluralsight, runs two podcasts (Day Two Cloud and Chaos Lever, and creates original content for technology vendors.
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[@salamibuilds]

Niiice!!! Enjoy your vacation 🏖️

[@thebtm]

Awesome Video. thank you for it.
Have a great vacation.

[@G8KEEPER]

Thanks Ned, enjoy your vacation.

[@adamdaniel5766]

this is pretty cool thanks for the info!

[@avivasl]

I am glad TF is making easier to test input variables. Using pre/postcondition unnatural feels unnatural. thx!

[@mistwire]

Great explainer video

[@mattias.engineer]

You can actually refer to unknown resource attributes in your variable validation blocks. If you do, the resource is created first, then the validation happens. I don't know if it ever makes sense to do it though 🤔