Reference a file relative

[ptr1120]

Hello,

is the a way to reference/read a file relative to the current template file? I need this in order to load a file with variables that are specific to the templates of this subdirectory.
So a function/variable like {{file.Read currentFile.Directory/.env }}?

[hairyhenderson]

@ptr1120 is there a reason you need to use file.Read, rather than including the file as a datasource? .env type files are natively supported by gomplate...

If you do need to use file.Read though, the path is relative to your current working directory (i.e. whatever the pwd command returns). I've thought in the past of some sort of self function, which could return the template's path, or something similar, but I'm not certain how necessary it really is... Every use-case I've run into for it turned out to be a symptom of me trying to do something in an awkward and inelegant way 😉

[ptr1120]

@hairyhenderson : first of all thank for this great project and for your answer. My use case ist that I have a lot of yml configuration files for several tenants. Imagine the following simplified file/directory structure

common/
   common-vars.env
tenants/
   tenant1/
     .env
     user-settings.yml
     apps/
        app1.yml
  tenant2/
     .env
     user-settings.yml

The .env files contain critical variables like the tenantId that is used in the other yml files. My problem is that I want to ensure, when referencing a tenantId in a yml, that it is the id from the .env file in this subdirectory tree. Using an absolute path would introduce the risk of failures due to copy and paste.
I am not aware of all the features/patterns in gomplate, but for me getting the name of the current file and then reading the env file relative from this would be something I would typically do. Such a self.Path, thisFilePath or thisFileDirectory function/variable would even give me the possibillity to generate the tenantId from the given path which would ensure correctness/uniqueness in this special case.

[hairyhenderson]

(FYI I edited your text to put a code-fence around the directory structure so it's easier to see! 😅)

Ok, it sounds like this would be a useful feature then! I'll see what I can do. I'm not sure how quickly I'll be able to get to this, but it's on the list!

[ptr1120]

thank you and sorry I wrote it from my mobile phone.

[hairyhenderson]

I realized that this probably belongs in the tmpl namespace, so I've issued #1364 to add two new functions tmpl.Path and tmpl.PathDir - the second is basically the same as filepath.Dir tmpl.Path, though the behaviour is slightly different when the template is provided inline (via -i).

[ptr1120]

Looks very promising, nice that you also provide both functions tmpl.Path and tmpl.PathDir