Cached Attachment Data
The cached_attachment_data plugin adds the ability
to retain the cached file across form redisplays, which means the file doesn't
have to be reuploaded in case of validation errors.
plugin :cached_attachment_dataThe plugin adds #cached_<attachment>_data to the model, which returns the
cached file as JSON, and should be used to set the value of the hidden form
field.
photo.cached_image_data #=> '{"id":"38k25.jpg","storage":"cache","metadata":{...}}' This method delegates to Attacher#cached_data:
attacher.cached_data #=> '{"id":"38k25.jpg","storage":"cache","metadata":{...}}'