as.json no longer functioning on Cohort object in version 2.0.8

[guuswilmink]

Whilst following the user guide, I came across the following error:

giBleedCohortJson <- as.json(giBleedCohort)
Error: unable to find an inherited method for function ‘as.json’ for signature ‘x = "Cohort"’.

Downgrading to version 2.0.7 shows the problem only arises in version 2.0.8, as version 2.0.7 runs as.json as intended.

EDIT:
version 2.0.7 actually seems to present a similar issue. The problem seems to start from version 2.0.6 onward.

[guuswilmink]

This error occurred due to using a named vector as an input rather than an unnamed vector of concept IDs. Closing issue.

[mdlavallee92]

glad you sorted it out, thanks for posting an issue

[guuswilmink]

Apologies for the confusion. The as.json function does appear broken after all, producing the same error provided previously (regardless of using a named or unnamed vector). Downgrading to 2.0.5 alleviates the problem for both named and unnamed vectors (though named vectors produce a faulty json down the line).

If necessary, I can provide the exact code I'm using, though I am able to reproduce the error by following the user guide to the letter.

[JetKinTanAccelteam]

may I ask what is name vector of concept IDs in this case?

[guuswilmink]

Hi @JetKinTanAccelteam,
I originally thought the issue was caused by using a vector with named values and mistakenly thought it was resolved by using a vector with unnamed values. The same issue unfortunately persisted.
The error should be reproduced when following these steps:
https://ohdsi.github.io/Capr/articles/Using-Capr.html