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module LazyImageTagHelper
def placeholder_image
"data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="
end
# Override the default ActionView `image_tag` helper to support lazy-loading
def image_tag(source, options = {})
options = options.symbolize_keys
unless options.delete(:lazy) == false
options[:data] ||= {}
unless options.delete(:use_original_source) == true
options[:data][:src] = path_to_image(source)
else
options[:data][:src] = source
end
options[:class] ||= ""
options[:class] << " lazy"
source = placeholder_image
end
super(source, options)
end
# Required for Banzai::Filter::ImageLazyLoadFilter
module_function :placeholder_image
end
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