Add output for id with camel case

[ByJacob]

what

• Sometimes a name with only alphanumeric characters is required
• Using an empty delimiter will generate an 'ugly' string: thisisexamplename
• A string would look better: thisIsExampleName
• But achieving such a string requires several additional operations

why

• It will provide output that can be used immediately for objects that require an alphanumeric name.

references

• https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/container_registry#name

[joe-niland]

I think this should mention camel case also.

[ByJacob]

Hey, I've added a usage example along with a link. Will this be sufficient ?

[Nuru]

@ByJacob Thank you very much for this PR.

Because context.tf is in every one of our Terraform modules and components (over 200), and any change affects all of them, we are extremely conservative about making changes. For this reason and others, while I understand your use case, I would oppose adding a new output, such as id_camel_case.

However, you still have options. While it is not well documented (though it is mentioned in the description of label_value_case), the id output is based on the Label Values after the label_value_case is applied. So if you set up null-label like this:

module "pascal" {
  source  = "cloudposse/label/null"
  version = "0.25.0"

  delimiter           = ""
  regex_replace_chars = "/[^a-zA-Z0-9]/"
  label_value_case    = "title"

  context = module.this.context # if you are chaining contexts
}

Then the id will be Pascal case, like ThisIsExampleName. You also get the other outputs working as expected, in particular id_full, so you have your choice of length-limited or not.

There is not (as far as I can see) an elegant way to get camelCase rather than PascalCase out of Terraform. I see you found that out trying to put it together yourself. (I'm not positive, but I expect your code produces PascalCase when label_value_case is upper.) This is why the module does not currently support camelCase. How important is it to you that the first character be lower case?

[ByJacob]

Hey,

Indeed, the solution you gave would be sufficient (it's not a problem to swap the size of the first letter in the terraform). I didn't read that much into the descriptions of all the variables :). I think you can close this MR.