1 files changed, 19 insertions, 0 deletions

diff --git a/lib/tasks/assets.rake b/lib/tasks/assets.rake
new file mode 100644
index 0000000..563dfad
--- /dev/null
+++ b/lib/tasks/assets.rake
@@ -0,0 +1,19 @@
+namespace :assets do
+  desc "Regenerate ImageMagick variants for every image asset from its stored original -- rerun whenever a new style is added to FileAttachment::STYLES after assets already exist. Scope to one asset first with ASSET_ID=123."
+  task :regenerate_variants => :environment do
+    scope = Asset.images
+    scope = scope.where(id: ENV["ASSET_ID"]) if ENV["ASSET_ID"].present?
+
+    scope.find_each do |asset|
+      original_path = asset.send(:file_path, :original)
+
+      unless File.exist?(original_path)
+        puts "Skipping Asset##{asset.id} (#{asset.name}) -- no original file at #{original_path}"
+        next
+      end
+
+      asset.send(:generate_variants, original_path)
+      puts "Regenerated variants for Asset##{asset.id} (#{asset.name})"
+    end
+  end
+end