Custom output-file tar_qarto

[mjrolland]

Hi,

I have a quarto report report.qmd that evolves over time. I would like to keep a copy of the consecutive exports, and not for them to overwrite the previous. When using the quarto_render function, I can use the output-file option like this: output-file = str_c("report_", Sys.Date(), ".html").

However, I am not able to pass this option through the tar_quarto command...

Thank you in advance for your help.

All the best,
Matthieu

[wlandau]

You could put the HTML output under Git / version control and track the version history in GitHub's interface.

The idea of the targets package and other Make-like tools is to maintain a single pipeline with newer targets overwriting previous ones. So there is a philosophical difference.

[mjrolland]

thank you for your answer, i get it, i was hoping you would not answer that :)

[ginolhac]

I suggest you have a look to this slide: https://thomasmock.quarto.pub/reports-presentations/#/render-with-parameters-1
tar_quarto() has the execute_params arguments that is described to tweak the parameters used and the output file name.

For reference, the code from Tom Mock:

render_fun <- function(penguin){
  quarto::quarto_render(
    input = "penguin-report.qmd",
    execute_params = list(species = penguin),
    output_file = glue::glue("{penguin}-report.html")
  )
}

unique(penguins$species) |>
  as.character() |> 
  purrr::walk(render_fun)