Hedge against vectorized input

[krlmlr]

This seemed important for a case I can't remember.

Pull Request

Before you submit a pull request, please do the following:

• Add an entry to NEWS concisely describing what you changed.

• Add unit tests in the tests/testthat directory.

• Run Build->Check Package in the RStudio IDE, or devtools::check(), to make sure your change did not add any messages, warnings, or errors.

Doing these things will make it easier for the plumber development team to evaluate your pull request. Even so, we may still decide to modify your code or even not merge it at all. Factors that may prevent us from merging the pull request include:

• breaking backward compatibility
• adding a feature that we do not consider relevant for plumber
• is hard to understand
• is hard to maintain in the future
• is computationally expensive
• is not intuitive for people to use

We will try to be responsive and provide feedback in case we decide not to merge your pull request.

Minimal reproducible example

Finally, please include a minimal reprex. The goal of a reprex is to make it as easy as possible for me to recreate your problem so that I can fix it. If you've never heard of a reprex before, start by reading https://github.com/jennybc/reprex#what-is-a-reprex, and follow the advice further down the page. Do NOT include session info unless it's explicitly asked for, or you've used reprex::reprex(..., si = TRUE) to hide it away.

reprex::reprex({
  library(plumber)
  # insert reprex here

})

Delete these instructions once you have read them.

---

Brief description of the original problem and the approach behind your solution.

# insert reprex here

PR task list:

• Update NEWS
• Add tests
• Update documentation with devtools::document()

[meztez]

Was it for the openapi url bug? when you click on the openapi.json link in the browser?
See #421 , also fixed in #532

[schloerke]

#532 has been merged. Thank you for bringing attention to it!