The ajvr library is a
very thin wrapper around the awesome AJV JSON validation
library. The essential change between the syntax presented in the
official AJV Readme is
exchanging JavaScripts dot operator (.) with R’s
dollar-sign operator ($).
Note that care must be taken in transforming R objects to JSON,
because of R’s everything-is-a-vector philosopy. Hence, for convenience
file paths to valid JSON (.json) and YAML
(.yml or .yaml) may be used wherever an object
is expected.
The fastest validation call:
library('ajv')
var ajv = Ajv() # options can be passed, e.g. list(allErrors= TRUE)
var validate = ajv$compile(schema)
var valid = validate(data)
if (!valid) print(validate$errors)or with less code
or
# ...
ajv$addSchema(schema, 'mySchema')
var valid = ajv$validate('mySchema', data)
if (!valid) print(ajv$errorsText())
# ...Note that in each of these calls, schema and
data arguments may be a valid JSON string, an R object
(i.e. list(...)), a connection to a JSON file, or the file
name of JSON or YAML file. YAML files are parsed via js-yaml’s
safeLoad() method.