Solved issue with count.only=TRUE

[massimoaria]

Solved this issue:

devtools::build_readme() returns an error.

ℹ Installing openalexR in temporary library
ℹ Building /Users/massimoaria/Rpackages/openalexR/README.Rmd

Quitting from lines 190-203 [unnamed-chunk-12] (README.Rmd)
Error in item$last_known_institution :
$ operator is invalid for atomic vectors
Error:
! in callr subprocess.
Caused by error in item$last_known_institution:
! $ operator is invalid for atomic vectors
ℹ See $stdout for standard output.
Type .Last.error to see the more details.
We are not able to build readme because the following lines don't work:

my_arguments <- list(
entity = "authors",
last_known_institution.id = "I71267560",
works_count = ">499"
)
do.call(oa_fetch, c(my_arguments, list(count_only = TRUE)))

The issue appears only when you set count_only = TRUE

[trangdata]

This is not an issue with oa_fetch. We hardcoded the number of fields returned in result$meta, and it looks like OpenAlex just added a new field groups_count. I suggest closing this PR and change this line in oa2df:

openalexR/R/oa2df.R

Line 58 in ccb6c29

if (count_only && length(data) == 4) {