无法使用Rails邮件gem在GMail收件箱上设置：DELETE标志

Question

I am getting this error when trying to set the deleted flag;

Net::IMAP::NoResponseError (STORE attempt on READ-ONLY folder (Failure))

The error is thrown when running this;

connector.uid_store(item_uid, "+FLAGS", [:Deleted])

This code runs fine just before it;

connector.create("TestFolder") unless connector.list('', "TestFolder")
connector.uid_copy(item_uid, "TestFolder")

I have not been able to find a reason for this, especially since I can create 'folders' and copy items to it without a problem. I am using ruby 1.9.2, rails 3.2.10, mail 2.4.4

Any help would really save my mind.

Cheers

~~~~~~~ edit Mail defaults are setup as per below;

#==> Collect items
case feed.url_type
when "IMAP"
  puts "Trying IMAP retriever for " + feed.url_source
  Mail.defaults do
    retriever_method :imap,
      :address => feed.url_source,
      :port => 993,
      :user_name => feed.user,
      :password => feed.password,
      :enable_ssl => true,
      :read_only => false
  end
  self.add_email_stubs(Mail.find(), feed)

The connector is picked up from here;

def add_email_stubs(items, feed)
    Mail.all do |item, connector, item_uid|

and used here (in same def);

  #==> Move message
  connector.create("Archive") unless connector.list('', "Archive")
  connector.uid_copy(item_uid, "Archive")
  connector.uid_store(item_uid, "+FLAGS", [:Deleted])  <==Error occurs here

Answer 1

Fixed... I needed to explicitly select the INBOX before it would allow me to make any STORE changes. You can not rely on defaulting to the INBOX when connecting, even though it looks like you 'in' the INBOX.

connector.uid_copy(item_uid, "Archive")
connector.select("INBOX")   <== Need to explicitly select the INBOX
connector.uid_store(item_uid, "+FLAGS", [:Deleted])

Thats to tricky for a screw driver monkey like me to have to work out!! :)