Paperclip unit testing

Rails
1

Hi,

Rails 2.3.2, paperclip 2.2.9.2

How can I unit test my model that has a paperclip attachment?

I add to my model:

— CODE START —
has_attached_file :image, :default_url => ‘’
attr_protected :image_file_name, :image_content_type, :image_image_size
— CODE END —

Than I type a UNIT test:

— CODE START —
foo=FooModel.new({:image => File.new(‘test/fixtures/img/an_image.gif’)})
— CODE END —

This works fine until… in that model I have a validator that accesses
the “image” attribute:

— CODE START —
image.path
— CODE END —

But there is no image under that path, since it points to
RAILS_ROOT/public/system/images/… What should I do now?

2

Yep, you actually need to upload the picture actually.

Take a look at the following code snippet I wrote some time back,
for uploading image, resizing. (Ignore the code which is for image
cropping)
129954’s gists · GitHub

Thanks
Srinivas

On Jul 7, 2:59 pm, Michal B. [email protected]

3

Thanks!

How do you process the image in the model?

Before the save of the model object to database I want to add another
image to it, that is a modified version of the “image” attribute.

I do:
has_attached_file :image
has_attached_file :image2
after_validation :prepare_image2

And:
def cprepare_image2
(…)
path = image.queued_for_write[:original].path
self.image2 = some_rmagic_processing(path)
(…)
end

Is there any other way to access the uploaded image?
“image.queued_for_write[:original].path” does not look nice :confused:

May be use an other callback?