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module InvalidUTF8ErrorHandler
extend ActiveSupport::Concern
included do
rescue_from ArgumentError, with: :handle_invalid_utf8
end
private
def handle_invalid_utf8(error)
if error.message == "invalid byte sequence in UTF-8"
render_412
else
raise(error)
end
end
def render_412
respond_to do |format|
format.html { render "errors/precondition_failed", layout: "errors", status: 412 }
format.js { render json: { error: 'Invalid UTF-8' }, status: :precondition_failed, content_type: 'application/json' }
format.any { head :precondition_failed }
end
end
end
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