17 lines
658 B
Ruby
17 lines
658 B
Ruby
# frozen_string_literal: true
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module ExportsHelper
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def send_csv_data(content_array, filename)
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send_data(export_csv(content_array), filename: filename, type: :csv)
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end
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# Tab-separated CSV with utf-16le encoding (unicode) and byte order
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# mark. This seems to be the only variant Excel can get
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# automatically into proper table format. OpenOffice handles it
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# well, too.
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def export_csv(content_array)
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csv_data = content_array.map { |x| x.to_csv(col_sep: "\t", encoding: "utf-8") }.join
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byte_order_mark = "\uFEFF"
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(byte_order_mark + csv_data).encode("utf-16le", "utf-8", invalid: :replace, undef: :replace, replace: "")
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end
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end
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