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require 'csv'
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module CsvExporter
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def self.export(resources, columns, header = nil)
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header ||= default_header(columns)
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raise ArgumentError, "Columns and header row aren't the same length" unless columns.length == header.length
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# need to save the current context as the enumerator is executed by a separate thread
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context = Foreman::ThreadSession::Context.get
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Enumerator.new do |csv|
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Foreman::ThreadSession::Context.set(context)
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csv << CSV.generate_line(header)
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cols = columns.map { |c| c.to_s.split('.').map(&:to_sym) }
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resources.uncached do
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resources.reorder(nil).limit(nil).find_each do |obj|
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csv << CSV.generate_line(cols.map { |c| c.inject(obj, :try) })
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end
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end
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end
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end
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def self.default_header(columns)
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columns.map{|c| c.to_s.titleize}
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end
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end
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