How to avoid square brackets when converting list to JSON using jsonlite::toJSON in R?

Question

I have a list my_list <- list(name="Fred", age="5")

I expected my_list %>% toJSON to return {"name": "Fred", "age": "5"}

Instead, it returns {"name":["Fred"],"age":["5"]}

How can I convert this list to JSON whilst avoiding the square brackets?

Answer 1

We can use the auto_unbox which is by default FALSE

library(dplyr)
library(jsonlite)
my_list %>% 
   toJSON(auto_unbox = TRUE)
#{"name":"Fred","age":"5"} 

Answer 2

Use auto_unbox (the default is FALSE)

toJSON(my_list, auto_unbox =T)