Shortcode to use different data files – How to parameter value to range?

[Phlow]

Problem:
I have several data-files with the same structure.

 data/money_2019.yml
 data/money_2020.yml

I want to show the data with the help of a shortcode in my pages.

In my page I want to call the shortcode and give it a parameter to call the according data-file.

{{< money dataset="money_2020" >}}

Now I want the Shortcode to range through that data file. But how do I do it?

{{ range .Site.Data.$VALUE_OF_PARAMETER }}
<!-- output -->
{{ end }}

[alexandros]

See:

Introduction to Hugo Templating

Hint: try using the dollar sign $ to go higher up from within the shortcode context.

OR

You can also use the global site function -that does not depend on the context- for example:
{{ range site.Data.$VALUE_OF_PARAMETER }}

[Phlow]

First: Thank you for helping me. I know of the concept of $ and .

Maybe I explain with an example what I want to achieve:

I call the shortcode like this:

{{< money dataset="money_2020" >}}

And then I want the shortcode to loop through the according data-file like this:

{{ range .Site.Data.money_2020 }}
<!-- output -->
{{ end }}

When I use another shortcode like this

{{< money dataset="money_2020" >}}

it shall loop like this:

{{ range .Site.Data.money_2020 }}
<!-- output -->
{{ end }}

Now my question: How do I construct this code in shortcode by using the parameter provided in the shortcode?

[alexandros]

You need to use .Get to fetch the dataset parameter, then store it in a variable and finally construct the correct PATH and store it in the same variable, something like:

{{ $file := .Get "dataset" }}
{{ $file = print .Site.Data $file }}
{{ range $file }}
<!-- output -->
{{ end }}

[Phlow]

We are getting closer. Thank you. Now your code grabs all data-files but not the one we want and Hugo complains and can’t execute.

{{ range $file }}
<!-- output -->
{{ end }}

If I write this code

{{ $file := .Get "dataset" }}
{{ $file = print .Site.Data $file }}
{{$file}}

It prints all the maps in data. Any ideas to narrow it down to the desired one?

[alexandros]

The code I posted above is not right.

Here is something that should work:

{{ range (index .Site.Data (.Get "dataset")) }}
<--- key --->
{{ end }}

To range over the map interface of the given data file we need to use the index function

[Phlow]

I want to say Thank you – Your code works perfect.

And now the finished example.

The /data/testdata.yml looks like:

-
    date: 31.01.20
    money: -5
-
    date: 30.01.20
    money: -13.65
-
    date: 29.01.20
    money: -11.99

In a content-page we call the shortcode with a parameter to look up our testdata.yml-file.

{{< money dataset="testdata" >}}

And the shortcode /layouts/shortcodes/money.html looks like this;

<ul>
{{ range (index .Site.Data (.Get "dataset")) }}
  <li>{{ .date }} – <code>{{ .money }} $</code></li>
{{ end }}
</ul>

And the result looks like this:

<ul>
  <li>31.01.20 – <code>-5 $</code></li>
  <li>30.01.20 – <code>-13.65 $</code></li>
  <li>29.01.20 – <code>-11.99 $</code></li>
</ul>