module ActiveAdmin::ResourceController::Streaming
This module overrides CSV responses to allow large data downloads. Could be expanded to JSON and XML in the future.
Public Instance Methods
index() { |format| ... }
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Calls superclass method
# File lib/active_admin/resource_controller/streaming.rb, line 11 def index super do |format| format.csv { stream_csv } yield(format) if block_given? end end
Protected Instance Methods
csv_filename()
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# File lib/active_admin/resource_controller/streaming.rb, line 31 def csv_filename "#{resource_collection_name.to_s.gsub('_', '-')}-#{Time.zone.now.to_date.to_s(:default)}.csv" end
stream_csv()
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# File lib/active_admin/resource_controller/streaming.rb, line 35 def stream_csv headers['Content-Type'] = 'text/csv; charset=utf-8' # In Rails 5 it's set to HTML?? headers['Content-Disposition'] = %{attachment; filename="#{csv_filename}"} stream_resource &active_admin_config.csv_builder.method(:build).to_proc.curry[self] end
stream_resource(&block)
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# File lib/active_admin/resource_controller/streaming.rb, line 20 def stream_resource(&block) headers['X-Accel-Buffering'] = 'no' headers['Cache-Control'] = 'no-cache' if ActiveAdmin.application.disable_streaming_in.include? Rails.env self.response_body = block[''] else self.response_body = Enumerator.new &block end end