TableSetting

I couldn't find a gem that would allow an HTML preview of a styled Excel spreadsheet before exporting, so I had to roll my own. Styles can be applied to individual cells, entire rows, or (once the table is built) even columns. To save some bandwidth, styles are applied using automatically-defined classes which are then applied to the corresponding cells.

Add this line to your application's Gemfile:

gem 'table_setting'

And then execute:

$ bundle

Or install it yourself as:

$ gem install table_setting

The following simple example creates a table which has a header featuring large white text on a dark brown background. The bottom right cell is individually set to bold text and the bottom row spans all columns. Exporting with to_html or to_xls achieve roughly the same formatting.

sheet = TableSetting::Sheet.new
header = sheet.new_row(background: '#3A2212', color: '#ffffff', bold: true, size: '18px')
header.add_cells(["First Name", "Last Name"])

sheet.new_row.add_cells(["Fred", "Flintstone"])
row = sheet.new_row
row.new_cell("Wilma")
row.new_cell("Flintstone", bold: true)

footer = sheet.new_row
footer.new_cell("That is all the people to list.", span: 'all')

Then export:

sheet.to_html
sheet.to_xls
sheet.to_csv

Or maybe you want to turn the whole second column red:

sheet.style_column(2, background: '#ff6666')

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request