redcap_survey_link_export_oneshot function

Get survey link from REDCap

This function uses REDCap's API to get the link for a survey.

redcap_survey_link_export_oneshot(
  redcap_uri,
  token,
  record,
  instrument,
  event = "",
  verbose = TRUE,
  config_options = NULL,
  handle_httr = NULL
)

Arguments

• redcap_uri: The uri/url of the REDCap server typically formatted as "https://server.org/apps/redcap/api/". Required.
• token: The user-specific string that serves as the password for a project. Required.
• record: The record ID associated with the survey link. Required
• instrument: The name of the instrument associated with the survey link. Required
• event: The name of the event associated with the survey link. Optional
• verbose: A boolean value indicating if messages should be printed to the R console during the operation. Optional.
• config_options: A list of options passed to httr::POST(). See details at httr::httr_options(). Optional.
• handle_httr: The value passed to the handle parameter of httr::POST(). This is useful for only unconventional authentication approaches. It should be NULL for most institutions. Optional.

Returns

Currently, a list is returned with the following elements,

• survey_link: a character string containing the URL for the survey.

• success: A boolean value indicating if the operation was apparently successful.

• status_code: The http status code

  of the operation.

• outcome_message: A human readable string indicating the operation's outcome.

• instrument: The instrument associated with the survey link.

• records_affected_count: The number of records associated with the survey link.

• affected_ids: The subject IDs associated with the survey link.

• elapsed_seconds: The duration of the function.

• raw_text: If an operation is NOT successful, the text returned by REDCap. If an operation is successful, the raw_text is returned as an empty string to save RAM.

Details

Currently, the function doesn't modify any variable types to conform to REDCap's supported variables. See validate_for_write() for a helper function that checks for some common important conflicts.

Permissions Required

To use this method, you must have API Export privileges in the project. (As stated in the 9.0.0 documentation.)

Examples

## Not run:

uri     <- "https://redcap-dev-2.ouhsc.edu/redcap/api/"
token   <- "4780D038A2080BA2E7CC904A14218662" # survey
record  <- 1
instrument   <- "participant_morale_questionnaire"
# event <- "" # only for longitudinal projects

result <- REDCapR::redcap_survey_link_export_oneshot(
  record         = record,
  instrument     = instrument,
  redcap_uri     = uri,
  token          = token
)
result$survey_link
## End(Not run)

References

The official documentation can be found on the 'API Help Page' and 'API Examples' pages on the REDCap wiki (i.e., https://community.projectredcap.org/articles/456/api-documentation.html and https://community.projectredcap.org/articles/462/api-examples.html). If you do not have an account for the wiki, please ask your campus REDCap administrator to send you the static material.

Author(s)

Will Beasley