[R] httr package syntax (PUT)

[Jared Rodecker]

Greetings fellow R users.

I'm struggling with the syntax of submitting a PUT request

I'm trying to insert a few PUT requests into some legacy R code that I have
that performs daily ETL on a small database. These requests will add users
to an email mailing list in MailChimp.


I have been able to get my GET requests formatted into syntax that R
(specifically the httr package) accepts:

GET("
https://us10.api.mailchimp.com/3.0/lists/list_id_XXXXX/members/MEMBER_HASH_#######",
query = list(apikey = 'XXXXXXXXXXXXXX'))


However when I try to do something similar for PUT requests this simple
syntax isn't working - you can't just pass the API KEY and/or requested
parameters directly through the URL. I get a 401 error if I use the same
syntax I used for GET.


I believe that I need to use the CONFIG option to pass the API key (either
using AUTHENTICATE or ADD_HEADERS) and the requested parameters in the BODY
to get the PUT request to work but I can't get the syntax to work - this
gives a 400 error:


auth <- authenticate("anystring", "XXXXXXXXXXXXXX", type = "basic")

parms <- '[{"email_address" : "some_user at domain.com", "status_if_new" :
"subscribed"}]'

PUT("
https://us10.api.mailchimp.com/3.0/lists/list_id_XXXXX/members/MEMBER_HASH_#######
",config=auth,body=parms,encode="json")


If anyone can point me to a more flushed out example that would be
amazing...but even just some tips on how to get more info on my error
message to help me troubleshoot my syntax would also be a big help.  I've
also been trying to get httpput (from the RCurl package) but also
struggling with the syntax there.


Thanks!


Jared

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