attachment_fu: loading objects w/ attachments in batch?

rubyonrails-talk
1

Using the (very nifty) attachment_fu plugin. It would be very convenient if I could batch-load a lot of my model objects that have attachments, instead of having to load them interactively via a web page.

Experimented with calling uploaded_data= directly, but didn't work, and I'm not sure that's the right route. Any suggestions?

Thanks,

dwh

2

Not sure if this is what you're after or not. We have some scenarios in which we create files (reports) on the webserver in response to a user request and then save them on the server using an attachment_fu- based model. It's similar in that we're creating the model with a file but avoiding the interactive part.

It was as simple as setting <model>.temp_path. Note that this works for us because we're storing objects in the file system rather than the DB/S3. temp_path is mixed in for file system storage; not sure about the others.

3

Hmm, that might work. Will investigate.

Thanks,

dwh

AndyV wrote:

4

Aha. http://blog.lachaise.org/?p=8 seems to provide a way to do this (in the middle of a discourse about duck typing...)

dwh

5

Actually, having followed a suggestion in the comments to that blog entry, there's even an easier way (below, ImageMetadata is my class that has_attachment):

script/console

Mime::Type.register "image/gif", :gif

=> ["gif"]

t = ActionController::TestUploadedFile.new('db/seed-data//tile-samples/bippy2.gif', Mime::GIF)

=> #<ActionController::TestUploadedFile:0xb70358d8 @original_filename="bippy2.gif", @content_type=#<Mime::Type:0xb7039974 @synonyms=, @symbol=:gif, @string="image/gif">, @tempfile=#<File:/ tmp/bippy214728-4.gif>>

m = ImageMetadata.new

=> #<ImageMetadata id: nil, size: nil, content_type: nil, filename: nil, height: nil, width: nil, parent_id: nil, thumbnail: nil, property_value_id: nil, created_at: nil, updated_at: nil>

m.uploaded_data = t

=> #<ActionController::TestUploadedFile:0xb70358d8 @original_filename="bippy2.gif", @content_type=#<Mime::Type:0xb7039974 @synonyms=, @symbol=:gif, @string="image/gif">, @tempfile=#<File:/ tmp/bippy214728-4.gif>>

m.save!

=> true

Seems like sorta a pain that you have to explicitly set the mime type, but hey, small price to pay...

dwh