Terraform cant access attributes on a list of objects.

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. After some digging I found that the above PR appeared to change what types of elements could be accessed from lists, however, there was no reference in the PR or the changelog about the change in the element function or it appears any of the functions that take a list type only working with flat lists. Was this intended? I tried to do some workarounds, but it appeared that anything that I tried to use that took a type of list did not like the fact that it was not a flat list.

Terraform cant access attributes on a list of objects.

Terraform provides a greater ability to define Infrastructure as Code IaC through its support of Expressions. Expressions are lines of code that define configuration and attributes on resources in the Terraform HCL code as the Terraform code is executed with the terraform plan command. This enables a rich ability to dynamically configure resources based on passed input variables to the Terraform Project , or even via looking up other resources managed by the same Terraform Project. There is a huge variety to the different code expressions that can be written in Terraform to suit the requirements of different Infrastructure as Code projects. Terraform expressions support many built-in functions to help writing the expression code needed for a solutions infrastructure definition. When using a Terraform list type to define an Array of value or objects, it may be necessary at times to lookup those values programmatically. The Terraform index function can be used to lookup the index location of a value in a list. The function accepts an argument that is a reference to the list to search, and an argument that is the value to lookup the index for within the list. The following is an example usage of the index function to find the index of a value in a simple list of string values:. The previous example shows how simple it is to use the index function to retrieve the index of a value within a list of strings aka list string. This can be used exactly the same way to lookup the index of values in a list of numbers aka list number too. The following is an example usage of the index function to find the index of a value in a simple list of numbers:. There are also times when the list may contain objects that have their own attributes. To use the index function on a list of objects list object to find the index of an object in the list by looking up the value of an attribute on the object is performed with the help of a splat expression that that converts the list object to a list of the values needed for the lookup.

This helps our maintainers find and focus on the active issues. Note that "this isn't currently supported" is fine since it seems like the previous behavior was not explicitly supported at which point this could be a feature rather than a bug. With 0.

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Terraform provides a greater ability to define Infrastructure as Code IaC through its support of Expressions. Expressions are lines of code that define configuration and attributes on resources in the Terraform HCL code as the Terraform code is executed with the terraform plan command. This enables a rich ability to dynamically configure resources based on passed input variables to the Terraform Project , or even via looking up other resources managed by the same Terraform Project. There is a huge variety to the different code expressions that can be written in Terraform to suit the requirements of different Infrastructure as Code projects. Terraform expressions support many built-in functions to help writing the expression code needed for a solutions infrastructure definition. When using a Terraform list type to define an Array of value or objects, it may be necessary at times to lookup those values programmatically. The Terraform index function can be used to lookup the index location of a value in a list.

Terraform cant access attributes on a list of objects.

Hands-on: Try the Create Dynamic Expressions tutorial. Terraform makes several kinds of named values available. Each of these names is an expression that references the associated value. You can use them as standalone expressions, or combine them with other expressions to compute new values.

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OmarDarwish mentioned this issue Nov 28, Copy link. He has worked with companies of all sizes from startups to large enterprises. When using a Terraform list type to define an Array of value or objects, it may be necessary at times to lookup those values programmatically. He has a passion for technology and sharing what he learns with others to help enable them to learn faster and be more productive. Dismiss alert. You signed in with another tab or window. You signed out in another tab or window. The text was updated successfully, but these errors were encountered:. Have a question about this project? This can be performed in a similar syntax to retrieving array elements in other programming languages by their index. There is a huge variety to the different code expressions that can be written in Terraform to suit the requirements of different Infrastructure as Code projects. Based on the documentation and schema, I would not expect this resource to return a list of EKS cluster resources; in fact, since the lookup is done by name , it should be impossible for more than one cluster to be returned. Skip to content.

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Skip to content. The following is an example usage of the index function to find the index of a value in a simple list of string values:. When doing a terraform plan here an error is presented:. Already on GitHub? Was this intended? Apologies for the error here. I am also seeing this issue described in comment All reactions. Hi DustinChaloupka Apologies for the error here. Sorry, something went wrong. References No response Would you like to implement a fix? Example of the error: data. Jump to bottom. Already have an account? Remote terraform state stale