Question

I am using the carrierwave gem with Rmagick in a Rails app. I’ve set up a new version in my uploader file:

class ImageUploader < CarrierWave::Uploader::Base   
  include CarrierWave::RMagick
  storage :file
  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end
  version :preview do
     process :resize_to_fill => [580, 350]
  end
end

Of course, I included rmagick and carrierwave in my gemfile. Now I try to load the preview version of my images in my views:

@product.photos.first.image.preview

This does not give any errors, but loads a broken image. If I copy the url of the image, I get a routing error (‘no route matches /path/to_my_imagesfolder/preview_image.png’). If I remove the preview method, the image loads properly.

What can the problem be? I thought maybe it was a permissions issue, but I set the uploads folder with 777 and it still fails.

Any ideas?

EDIT: I realized if I upload the images again the new versions are created. Is it possible to make Rmagick create them when they are requested (like TimThumb does in PHP) Or at least is there any command to batch create all the versions?

There must be a better way than uploading all the images…

Answer 1

You can use .recreate_versions!

For example:

Product.all.each do |product|
  product.photos.each do |photo|
    photo.recreate_versions!
  end
end