Using metadata values to control the visibility of slides

[ellafm]

Description

I want to produce lecture slides in two versions. One version contains answers to the problems, and the other does not. The code shown below achieves this, with the metadata value answer_slides controlling whether the solutions appear in the rendered presentation.

But putting a div around a whole slide looks like a hack to me. Is it the recommended approach, or are there better ways to achieve the same effect. For example, could it be done by defining a .answer class and using a lua filter?

---
title: "Some title"
author: "An author"
jupyter: python3
format: 
    revealjs:
        theme: default
answer_slides: false
---

## First slide

Some content

::: {.content-hidden unless-meta="answer_slides"}
## Second slide

This slide will be hidden unless `answer_slides` is set to `true`
:::

[mcanouil]

That's how it is documented and how this feature works: https://quarto.org/docs/authoring/conditional.html

Note that in this case I would use profile. https://quarto.org/docs/projects/profiles.html

---
title: "Some title"
author: "An author"
engine: markdown
format: 
  revealjs:
    theme: default
---

## First slide

Some content

::: {.content-visible when-profile="answer"}
## Second slide

This slide will be hidden unless `answer_slides` is set to `true`
:::

quarto render index.qmd
quarto render index.qmd --profile answer --output with-answers.html

[finkelshtein]

@mcanouil Would it possible to get both files (without and with answers) on the same website?
I currently publish each Lab of a course without answers, and in a couple of days I publish it with answers.
Both versions of each Lab should be present on the website (so that students would be able to access the versions without answers later on).

[mcanouil]

You could use _metadata.yml and symbolic links such as:

├── questions
│   ├── _metadata.yml
│   └── subject1.qmd
├── questions.qmd
├── answers
│   ├── _metadata.yml
│   └── subject1.qmd -> ../questions/subject1.qmd
├── answers.qmd
├── _quarto.yml
└── index.qmd

[mcanouil]

Here is the demo:

• Questions/Answers listings Demo Website #11635