Errors Attaching Tempfile to Email in Rails
attachment, email, ruby, ruby-on-rails, temporary-files
Solution
Unless you save the uploaded file to some place, it's a bit limited, what you can do with it (for security reasons - you are supposed to validate the upload and then store the file).
But you should be able to `read` the file:
attachments[@attachment.original_filename] = @attachment.read
Note: I haven't tested this, maybe you need to read from the `@attachment.tempfile`
Problem
Have file in `@attachment`. From debug: ``` "datafile"=>#<ActionDispatch::Http::UploadedFile:0x3eee9c0 @original_filename="filename.jpg", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"datafile\"; filename=\"filename.jpg\"\r\nContent-Type: image/jpeg\r\n", @tempfile=#<File:C:/Users/.../RackMultipart20121026-2452-g369hf>>, ``` It was uploaded via a user form. I'm trying to attach it to an email: ``` ... attachments[@attachment.original_filename] = @attachment mail(:to => "email@email.com", :subject => "test", :from => @fromaddress) ``` Which errors: undefined method `length' for # I have also tried ``` attachments[@attachment.original_filename] = @attachment.tempfile ``` Which errors: ``` undefined method `[]' for #<Tempfile:0x5629e48> ``` `@attachment.original_filename` returns the proper filename ("filename.jpg" in example) Anything obvious?