Salesforce REST API：Databasedotcom gem可上传附件

Question

我在我的Ruby on Rails应用程序中使用Heroku的Databasedotcom gem与Salesforce的REST API进行交互。 我可以通过API成功创建帐户，但是添加附件时遇到问题。 我发现了这个建议https://github.com/heroku/databasedotcom/issues/98并执行了以下操作：

# Upload to Salesforce attachment
salesforce_attachment = Salesforce.client.materialize("Attachment").new
salesforce_attachment.Body = Base64::encode64(File.read(temp_file_path)) # critical line
salesforce_attachment.OwnerId = Salesforce::Sobjects::OWNER_IDS[:OWNER_ID]
salesforce_attachment.ParentId = Salesforce.find_or_create_account_for_user(user)
salesforce_attachment.Name = file_name
salesforce_attachment.IsPrivate = false
salesforce_attachment.save # this isn't saving for some reason

但是，当我尝试保存时，出现以下错误：

Databasedotcom::SalesForceError: Cannot deserialize instance of reference from START_OBJECT value { at [line:1, column:2]
from /Users/oregontrail256/.rvm/gems/ruby-1.9.3-p545/gems/databasedotcom-1.3.2/lib/databasedotcom/client.rb:376:in `ensure_expected_response'
from /Users/oregontrail256/.rvm/gems/ruby-1.9.3-p545/gems/databasedotcom-1.3.2/lib/databasedotcom/client.rb:334:in `with_encoded_path_and_checked_response'
from /Users/oregontrail256/.rvm/gems/ruby-1.9.3-p545/gems/databasedotcom-1.3.2/lib/databasedotcom/client.rb:307:in `http_post'
from /Users/oregontrail256/.rvm/gems/ruby-1.9.3-p545/gems/databasedotcom-1.3.2/lib/databasedotcom/client.rb:234:in `create'
from /Users/oregontrail256/.rvm/gems/ruby-1.9.3-p545/gems/databasedotcom-1.3.2/lib/databasedotcom/sobject/sobject.rb:115:in `save'
from (irb):100
from /Users/oregontrail256/.rvm/gems/ruby-1.9.3-p545/gems/railties-3.2.17/lib/rails/commands/console.rb:47:in `start'
from /Users/oregontrail256/.rvm/gems/ruby-1.9.3-p545/gems/railties-3.2.17/lib/rails/commands/console.rb:8:in `start'
from /Users/oregontrail256/.rvm/gems/ruby-1.9.3-p545/gems/railties-3.2.17/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

我尝试了其他文件，但仍然遇到问题。 我强烈怀疑这与设置附件的“ Body”属性有关，但是我无法弄清楚我在做什么，因为所有资源（包括Salesforces的开发人员文档 ）都对base64进行了编码。 此外，我没有超过其5 Mb的限制。 有什么建议么？？？

Answer 1

好的，我知道了：在设置附件的ParentId时，我使用的是实际的Account对象，而不是Account对象的ID。 即：

# wrong
salesforce_attachment.ParentId = Salesforce.find_or_create_account_for_user(user)

# right
salesforce_attachment.ParentId = Salesforce.find_or_create_account_for_user(user).Id