In a typical Solidus store, you can upload images for products and taxons.
Under the hood, Solidus will use a different file processing library depending on the Rails version: Active Storage is the default starting from Rails 6.1, while Paperclip is used in earlier versions.
Active Storage cannot be used in Rails 6.0 or earlier because it doesn't support public URLs, which Solidus needs to serve images to your users. If you're on Rails 6.0 or earlier, you have to use Paperclip.
While Paperclip is deprecated and will be removed in the near future, Solidus provides a compatibility layer that abstracts the differences between the two libraries, in order to offer an easier migration path to existing Paperclip users.
Customizing image sizes
By default, Solidus uses the following sizes for images:
You can access the URL for a specific sizes by calling, e.g. Spree::Image#url:
If you're building a custom storefront, you may also want to change the sizes of the images in your store. You can do this by applying an override to Spree::Image:
If the change you want to apply cannot be made through the existing configuration options, you can entirely replace the product image or taxon icon attachment module with your own.
This can be useful, for example, if you need to customize your image styles or perform custom post-processing operations on your image such as watermarking, compression, etc.
When replacing an attachment module, we recommend copy-pasting the original module first and only changing what you need. The right starting point will depend on whether you're using ActiveStorage or Paperclip. You can find the modules for Spree::Imagehere and the modules for Spree::Taxonhere.
Here's an example for the product image attachment:
Once you have your custom attachment module, you need to tell Solidus to use it: