Render a template with keeping indentation level of multi-line strings

[inf17101]

I have the following issue with the default rendering:

name: some name
data:
  key1: |
    {{value1}}

If I substitute it with a multi-line string using the default rendering syntax like above, then indentation level is lost and the resulting yaml is invalid:

substitution_string: Line1\nLine2\nLine3

name: some name
data:
  key1: |
    Line1
Line2
Line3

What I need per default is:

name: some name
data:
  key1: |
    Line1
    Line2
    Line3

I have tried out to register a partial because then the indentation level is kept and the rendering is fine. But then I need a custom syntax for my users like {{> indent value1}} (assume here the partial is registered with name 'indent').

Is there a programmatic way in the handlebars-rs library to enable to keep indentation level before rendering and disable it afterwars? I need it for one field and I need to change the default behavior.

What I have tried out: Register a template with is_partial = true, but the member and the Template::compile2 to define TemplateOptions is also private.

Is there any way to keep indentation level with the default syntax without defining special helpers or custom syntax?

[sunng87]

Hello @inf17101 , Let me know if this will work for you

name: some name
data:
  key1: |
    {{#each values}}
    {{this}}
    {{/each}}

where values is ["line1", "line2", "line3"]

A playground link:

https://sunng87.github.io/handlebars-rust/?tpl=name%3A%20some%20name%0Adata%3A%0A%20%20key1%3A%20%7C%0A%20%20%20%20%7B%7B%23each%20values%7D%7D%0A%20%20%20%20%7B%7Bthis%7D%7D%0A%20%20%20%20%7B%7B%2Feach%7D%7D&data=%7B%22values%22%3A%5B%22line1%22%2C%20%22line2%22%2C%20%22line3%22%5D%7D

[inf17101]

Thank you for your answer, but that is not my actual question. I search for a programmatic way not using a different syntax to achieve the correct result. But I will keep the partial with a custom name to let our users render templates with multi-line strings while keeping indentation level.