JSON parsing error in ruby client on Users.messages.attachments.get

Question

gem 'google-api-client', '~> 0.7.1'

using ruby google client to call https://developers.google.com/gmail/api/v1/reference/users/messages/attachments/get it is crashing after i get the result and call result.data

result.rb line 154

data = @request.api_method.response_schema.new(data)

throws JSON::ParseError

757: unexpected token at '"R0lGODlhigKjAOYAAG2Xd9js18jkx........="'

Answer 1

The data field of the attachment is base64 encoded, if you want to access the data field, you should decode it first.

For example you can do the following:

attachment_data = result.data
attachment_json = JSON.parse(attachment_data.to_json())
mime_data = Base64.decode64(attachment_json['data'])

Or try:

mime_data = Base64.decode64(result.data['data']) 

You might also want to read this article about how to parse json correctlu.