Trying to include execute_params in a df for use in a call to quarto_render()

[ghost]

I am trying to take vars from a df and use them as params in a call to quarto_render:

library(tidyverse)
library(quarto)
one_person <- tibble(
  title=c("Rev"), 
  name=c("Albert")
)

test_tibble_2 <- tibble(
  input='index.qmd',
  output_format = "html",
  output_file = paste0("tibble2_", 
                       one_person$title, 
                       "_", 
                       one_person$name,
                       ".html"),
   execute_params = list(params=one_person$title)
)


pmap(
  test_tibble_2, 
  quarto_render
)

This approach works if I don't include execute_params (which was the point) but fails when I do. My guess is that either the
one_person is not structured properly, or the execute_params is incorrectly specified.

This is the failure I get;

Error in knit_params_get(input_lines, params) : render params argument must be a named list Calls: .main -> execute -> -> knit_params_get Execution halted Error in pmap(): ℹ In index: 1. Caused by error: ! System command 'quarto' failed Run rlang::last_error() to see where the error occurred.
--
 

[mcanouil]

Could you properly format your post, please?
See https://quarto.org/bug-reports.html#formatting-make-githubs-markdown-work-for-us

And possibly change the category from "general" to "Q&A".

[ghost]

Re-written and posted to Q&A.

[ghost]

#4327

[mcanouil]

There was no need to recreate a post, simply change the category using a browser with "desktop view/mode".

[mcanouil]

execute_params is not for metadata.
It is for parameters metadata, i.e., under params YAML key, see https://quarto-dev.github.io/quarto-r/reference/quarto_render.html and https://quarto.org/docs/computations/parameters.html.

The only way you can make it work is as follow.

• file.qmd

---
title: '`r params[["title"]]`'
params:
  title: "Default"
---

Text

• script.r

quarto_render("file.qmd", execute_params = list(title = "Replace the default title with this one"))

If you want to override directly the metadata (e.g., lang, etc., quarto-dev/quarto-r#49), you actually can't with the current stat of the R package.
Note that there is a pending pull request, see quarto-dev/quarto-r#52.