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
Source
# File lib/active_admin/resource_controller/streaming.rb, line 12 def index super do |format| format.csv { stream_csv } yield(format) if block_given? end end
Calls superclass method
Protected Instance Methods
Source
# File lib/active_admin/resource_controller/streaming.rb, line 33 def csv_filename "#{resource_collection_name.to_s.gsub('_', '-')}-#{Time.zone.now.to_date.to_s}.csv" end
Source
# File lib/active_admin/resource_controller/streaming.rb, line 37 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
Source
# File lib/active_admin/resource_controller/streaming.rb, line 21 def stream_resource(&block) headers["X-Accel-Buffering"] = "no" headers["Cache-Control"] = "no-cache" headers["Last-Modified"] = Time.current.httpdate if ActiveAdmin.application.disable_streaming_in.include? Rails.env self.response_body = block[String.new] else self.response_body = Enumerator.new &block end end