Skip to contents

Modify an API request for a particular endpoint

Source: R/req_modify.R
req_modify.Rd

Modify the basic request for an API by adding a path and any other path-specific properties.

Usage

req_modify(
  req,
  ...,
  path = NULL,
  query = NULL,
  body = NULL,
  mime_type = NULL,
  method = NULL,
  call = rlang::caller_env()
)

Arguments

req

(httr2_request) A httr2::request() object.

...

These dots are for future extensions and must be empty.

path

(character or list) The route to an API endpoint. Optionally, a list or character vector with the path as one or more unnamed arguments (which will be concatenated with "/") plus named arguments to glue::glue() into the path.

query

(character or list) An optional list or character vector of parameters to pass in the query portion of the request. Can also include a .multi argument to pass to httr2::req_url_query() to control how elements containing multiple values are handled.

body

(multiple types) An object to use as the body of the request. If any component of the body is a path, pass it through fs::path() or otherwise give it the class "fs_path" to indicate that it is a path.

mime_type

(length-1 character) The mime type of any files present in the body. Some APIs allow you to leave this as NULL for them to guess.

method

(length-1 character, optional) If the method is something other than GET or POST, supply it. Case is ignored.

call

(environment) The environment from which a function was called, e.g. rlang::caller_env() (the default). The environment will be mentioned in error messages as the source of the error. This argument is particularly useful for functions that are intended to be called as utilities inside other functions.

Value

A httr2::request() object with additional class nectar_request.

See also

Other opinionated request functions: req_init(), req_pagination_policy(), req_prepare(), req_tidy_policy()

Examples

req_base <- req_init("https://example.com")
req_modify(req_base, path = c("specific/{path}", path = "endpoint"))
#> <nectar_request/httr2_request>
#> GET https://example.com/specific/endpoint
#> Body: empty
#> Options:
#> * useragent: "httr2/1.2.1 r-curl/7.0.0 libcurl/8.5.0 nectar/0.0.0.9006 (https://nectar.api2r.org)"
req_modify(req_base, query = c("param1" = "value1", "param2" = "value2"))
#> <nectar_request/httr2_request>
#> GET https://example.com/?param1=value1&param2=value2
#> Body: empty
#> Options:
#> * useragent: "httr2/1.2.1 r-curl/7.0.0 libcurl/8.5.0 nectar/0.0.0.9006 (https://nectar.api2r.org)"