Module: Panda::Core::ActiveStorageHelper

Defined in:
app/helpers/panda/core/active_storage_helper.rb

Instance Method Summary collapse

Instance Method Details

#variant_representation_url(variant) ⇒ String?

Generates a URL for an ActiveStorage variant, compatible with both Rails 7.x and 8.1+.

In Rails 8.1+, both url_for(variant) and image_tag(variant) break because VariantWithRecord no longer implements to_model. This helper constructs the representation proxy path directly from the blob and variation, avoiding all polymorphic routing that relies on to_model.

Parameters:

  • variant (ActiveStorage::VariantWithRecord) —

    The variant to generate a URL for

Returns:

  • (String, nil) —

    The URL path, or nil if generation fails



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# File 'app/helpers/panda/core/active_storage_helper.rb', line 15

def variant_representation_url(variant)
  blob = variant.blob
  "/rails/active_storage/representations/proxy/#{blob.signed_id}/#{variant.variation.key}/#{blob.filename}"
rescue => e
  Rails.logger.warn "[Panda] Failed to generate variant URL (#{e.class}): #{e.message}"
  nil
end