Intégration de HTML généré par une fonction R

Question

Je souhaite créer dynamiquement du HTML et restituer ce HTML In-quarto. L'application réelle consiste à insérer un iFrame, Mais pour faire simple, créons simplement une balise <img>.

Voici mon code .qmd :

```{r}
source("awash-functions.r")
```

How do you inject html text produced in an r function into a **quarto** document? 
In R markdown, I had the function `sprintf` a string. That doesn't seem to work here!

Here is `awash-functions.r`:

    imageLink <- function(iUrl, iText) {
      sprintf("<img src = '%s' width='24'>&emsp;%s", iUrl, iText)
    }

let's call the function and see what appears:

```{r echo=FALSE}
imageLink("https://www.united.com/8cd8323f017505df6908afc0b72b4925.svg", "united logo")
```

and now, here's what it's supposed to look like:

<img src = 'https://www.united.com/8cd8323f017505df6908afc0b72b4925.svg'>&emsp;united logo

Il rend et la fonction est évidemment appelée, Mais il affiche le code html au lieu de l'image :

Je sais que c'est simple mais je ne le trouve pas. Merci beaucoup!

Answer 1

Il y a deux points à noter :

• Tout d'abord, Quarto enveloppe par défaut toute sortie de bloc de code dans

   tag. To get the output asis you need to use the chunk option results: asis.
  
  

• Secondly, sprintf (or even print) returns output enclosed within quotes. So after using results: asis, you would get the html tags but would also get the quotes. So you need to wrap the sprintf with cat to get intended results.

---
format: html
---

```{r}
#| echo: false
imageLink <- function(iUrl, iText) {
  cat(sprintf(" %s", iUrl, iText))
}
```

```{r}
#| echo: false
#| results: asis
imageLink("https://www.united.com/8cd8323f017505df6908afc0b72b4925.svg", "united logo")
```

and now, here's what it's supposed to look like:

 united logo

---