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Update .XLS export to not produce corrupt file warnings #5

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Update .XLS export to not produce corrupt file warnings #5

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30 changes: 22 additions & 8 deletions lib/make_exportable/exportable_formats/excel.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ class Excel < ExportableFormat #:nodoc:

attr_accessor :data_set, :data_headers


def initialize(data_set, data_headers=[])
self.long = 'Microsoft Excel'
self.mime_type = 'application/vnd.ms-excel; charset=utf-8;'
Expand All @@ -16,18 +17,31 @@ def initialize(data_set, data_headers=[])

def generate
generate_header_option(data_headers)
output = "<table>\n"
output = "<?xml version='1.0'?>\n"
output << "<Workbook xmlns='urn:schemas-microsoft-com:office:spreadsheet'\n"
output << "\txmlns:o='urn:schemas-microsoft-com:office:office'\n"
output << "\txmlns:x='urn:schemas-microsoft-com:office:excel'\n"
output << "\txmlns:ss='urn:schemas-microsoft-com:office:spreadsheet'\n"
output << "\txmlns:html='http://www.w3.org/TR/REC-html40'>\n"
output << "\t<Worksheet ss:Name='Sheet1'>\n"
output << "\t\t<Table>\n"

unless data_headers.blank?
output << "\t<tr>\n"
output << data_headers.map {|h| "\t\t<th>#{sanitize(h.humanize.titleize)}</th>\n" }.join
output << "\t</tr>\n"
output << "\t\t\t<Row>\n"
output << data_headers.map {|h| "\t\t\t\t<Cell><Data ss:Type='String'>#{sanitize(h.humanize.titleize)}</Data></Cell>\n" }.join
output << "\t\t\t</Row>\n"
end

data_set.each do |row|
output << "\t<tr>\n"
output << row.map {|field| "\t\t<td>#{sanitize(field)}</td>\n"}.join
output << "\t</tr>\n"
output << "\t\t\t<Row>\n"
output << row.map {|field| "\t\t\t\t<Cell><Data ss:Type='String'>#{sanitize(field)}</Data></Cell>\n" }.join
output << "\t\t\t</Row>\n"
end
output << "</table>\n"

output << "\t\t</Table>\n"
output << "\t</Worksheet>\n"
output << "</Workbook>\n"

return output
end

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