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Carrierwave processing facts
- Class-level
process
definitions are only applied to the original file
- Versions are generated based on the processed original file
- Callbacks (
before
/after
) are applied to original file and each version by itself
- Under the hood, a version is an instance of the uploader class that has no versions
- Version uploader and original uploader can be distinguished by checking
#version_name
: version uploaders return the version name, whereas the original uploader instance returns nil
- Version instances do not have a reference to their parent uploader
class DemoUploader < CarrierWave::Uploader::Base
process :resize # 1
before :cache, :do_something # 3
version :thumb do # 2
process :crop
end
private
def do_something(file)
case version_name # 5
# ...
end
end
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Posted by Dominik Schöler to makandra dev (2019-02-21 16:26)