Converts a params map into a raw multipart/form-data binary.
BoldSign's multipart API uses bracket notation for nested objects:
signers[0][name]="Neil"signers[0][formFields][0][bounds][x]="50"
Recursively flattens arbitrarily nested maps and lists. Use encode_raw/1
to build the request body and content-type header directly, avoiding
String.to_atom/1 on dynamic bracket-notation field names.
Summary
Functions
Splits files from params and returns {file_parts, field_parts}.
Encodes params as a raw multipart/form-data binary.
Flattens a map into form field tuples with recursive bracket notation.
Functions
Splits files from params and returns {file_parts, field_parts}.
Encodes params as a raw multipart/form-data binary.
Returns {body, content_type} where body is the encoded binary and
content_type is "multipart/form-data; boundary=BOUNDARY".
Use with Req's :body option and set the content-type header manually:
{body, content_type} = Boldsign.Multipart.encode_raw(params)
Req.post!(client, url: "/some/endpoint", body: body, headers: [{"content-type", content_type}])Flattens a map into form field tuples with recursive bracket notation.