Redmine

Hello,

I'm trying to create an attachment programmatically. But I have had not success, because of missing documentation of the API.

My development Environment:

Environment:
  Redmine version                          2.2.4.stable
  Ruby version                             1.8.7 (x86_64-linux)
  Rails version                            3.2.13
  Environment                              development
  Database adapter                         MySQL

When generating attachments from data send by a custom web form there is no problem. Attachments are created the Redmine-way and they are attached to the journal and to emails without any problems.

But when I try to add my own files to the list of attachments I am not successful. Here is an code example:

# fetch attachments from request generated by form
attachments = Attachment.attach_files(@issue, params[:attachments])[:files]

# create file and place it at Rails.root.join('files')
# rma_file contains the fqfn of the file to be attached
rma_file = generate_rma_file(opts)

# create attachment 
# Depending on the way I do assemble the attachment I do get
# request status 500 because of unsupported object interfaces or
# subsequent modules like the mailer in this case cannot handle 
# the list of attachments.
rma_attachment = Attachment.create(
                :container => @issue,
                :file => rma_file,
                :author => User.current)

# here I am trying to extend the list of attachments
attachments << Attachment.attach_files(@issue, rma_attachment)

The error message:

Completed 500 Internal Server Error in 1185ms

NoMethodError (undefined method `diskfile' for #<Hash:0x7fd4ca92a5d0>):
  app/models/mailer.rb:428:in `initialize'
  app/models/mailer.rb:441:in `method_missing'

I did try to get some ideas how to do that job from https://github.com/domthu/13fismine/blob/master/lib/tasks/allegati_import.rake . But without success. Additionally I did take a look at the source codes of Redmine, but all the examples are working with datastructures recieved by a web request.

The example from the previous link is working with a file object to create the Attachment. I also tried this with the result, that the file object does not support the method call '.size()'. In that case the error has been thrown by the following code block:

  def file=(incoming_file)
    unless incoming_file.nil?
      @temp_file = incoming_file
      if @temp_file.size > 0   <-------- results in an error message

Are there any ideas or example source codes available regarding this problem?