Class: Decidim::Exporters::Excel

Inherits:
CSV show all
Defined in:
decidim-core/lib/decidim/exporters/excel.rb

Overview

Exports any serialized object (Hash) into a readable Excel file. It transforms the columns using slashes in a way that can be afterwards reconstructed into the original nested hash.

For example, ‘{ name: { ca: “Hola”, en: “Hello” } }` would result into the columns: `name/ca` and `name/es`.

It will maintain types like Integers, Floats & Dates so Excel can deal with them.

Instance Method Summary collapse

Methods inherited from CSV

#headers

Methods inherited from Exporter

#initialize

Constructor Details

This class inherits a constructor from Decidim::Exporters::Exporter

Instance Method Details

#export ⇒ Object

Public: Exports a file in an Excel readable format.

Returns an ExportData instance.



25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
 
# File 'decidim-core/lib/decidim/exporters/excel.rb', line 25

def export
  workbook = RubyXL::Workbook.new
  worksheet = workbook[0]

  headers.each_with_index.map do |header, index|
    worksheet.change_column_width(index, 20)
    worksheet.add_cell(0, index, header)
  end

  worksheet.change_row_fill(0, "c0c0c0")
  worksheet.change_row_bold(0, true)
  worksheet.change_row_horizontal_alignment(0, "center")

  processed_collection.each_with_index do |resource, index|
    headers.each_with_index do |header, j|
      if resource[header].respond_to?(:strftime)
        cell = worksheet.add_cell(index + 1, j, custom_sanitize(resource[header]))
        resource[header].is_a?(Date) ? cell.set_number_format("dd.mm.yyyy") : cell.set_number_format("dd.mm.yyyy HH:MM:SS")
        next
      end
      worksheet.add_cell(index + 1, j, custom_sanitize(resource[header]))
    end
  end

  ExportData.new(workbook.stream.string, "xlsx")
end