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Spreadsheet Architect

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Spreadsheet Architect is a library that allows you to create XLSX, ODS, or CSV spreadsheets super easily from ActiveRecord relations, plain Ruby objects, or tabular data.

Key Features:

  • Dead simple custom spreadsheets with custom data
  • Data Sources: Tabular Data from an Array, ActiveRecord relations, or array of plain Ruby object instances
  • Easily style and customize spreadsheets
  • Create multi sheet spreadsheets
  • Setting Class/Model or Project specific defaults
  • Simple to use ActionController renderers for Rails
  • Plain Ruby (without Rails) completely supported

Install

gem 'spreadsheet_architect'

General Usage

Tabular (Array) Data

The simplest and preferred usage is to simply create the data array yourself.

headers = ['Col 1','Col 2','Col 3']
data = [[1,2,3], [4,5,6], [7,8,9]]
SpreadsheetArchitect.to_xlsx(headers: headers, data: data)
SpreadsheetArchitect.to_ods(headers: headers, data: data)
SpreadsheetArchitect.to_csv(headers: headers, data: data)

Using this style will allow you to utilize any custom performance optimizations during your data generation process. This will come in handy when the spreadsheets get large and any loss in performance starts to matter.

Rails Relations or an Array of plain Ruby object instances

If you would like to add the methods to_xlsx, to_ods, to_csv, to_axlsx_package, to_rodf_spreadsheet to some class, you can simply include the SpreadsheetArchitect module to whichever classes you choose. For example:

class Post < ApplicationRecord
  include SpreadsheetArchitect
end

When using on an AR Relation or using the :instances option, SpreadsheetArchitect requires an instance method to be defined on the class to generate the data. By default it looks for the spreadsheet_columns method on the class. If you are using on an ActiveRecord model and that method is not defined, it would fallback to the models column_names method. If using the :data option this is completely ignored.

class Post
  include SpreadsheetArchitect

  def spreadsheet_columns
    ### Column format is: [Header, Cell Data / Method (if symbol) to Call on each Instance, (optional) Cell Type]
    [
      ['Title', :title],
      ['Content', content.strip],
      ['Author', (author.name if author)],
      ['Published?', (published ? 'Yes' : 'No')],
      :published_at, # uses the method name as header title Ex. 'Published At'
      ['# of Views', :number_of_views, :float],
      ['Rating', :rating],
      ['Category/Tags', "#{category.name} - #{tags.collect(&:name).join(', ')}"]
    ]
  end

end

Then use it on the class or ActiveRecord relations of the class

posts = Post.order(name: :asc).where(published: true)
posts.to_xlsx
posts.to_ods
posts.to_csv

# Plain Ruby Objects
posts_array = 10.times.map{|i| Post.new(number: i)}
Post.to_xlsx(instances: posts_array)
Post.to_ods(instances: posts_array)
Post.to_csv(instances: posts_array)

If you want to use a different method name then spreadsheet_columns you can pass a method name to the :spreadsheet_columns option.

Post.to_xlsx(instances: posts, spreadsheet_columns: :my_special_method)

Alternatively, you can pass a proc to the spreadsheet_columns option. For those purists that really dont want to define any extra spreadsheet_columns instance method on your model, this option can help you work with that methodology.

Post.to_xlsx(instances: posts, spreadsheet_columns: ->(instance){
  [
    ['Title', :title],
    ['Content', instance.content.strip],
    ['Author', (instance.author.name if instance.author)],
    ['Published?', (instance.published ? 'Yes' : 'No')],
    :published_at, # uses the method name as header title Ex. 'Published At'
    ['# of Views', :number_of_views, :float],
    ['Rating', :rating],
    ['Category/Tags', "#{instance.category.name} - #{instance.tags.collect(&:name).join(', ')}"],
    ['URL', :url, (val.start_with?("http") ? :hyperlink : :string)],
  ]
})

Sending & Saving Spreadsheets

Method 1: Save to a file manually

file_data = SpreadsheetArchitect.to_xlsx(headers: headers, data: data)

File.open('path/to/file.xlsx', 'w+b') do |f|
  f.write file_data
end

Method 2: Send Data via Rails Controller

class PostsController < ActionController::Base
  respond_to :html, :xlsx, :ods, :csv

  def index
    @posts = Post.order(published_at: :asc)

    render xlsx: @posts
  end

  # Using respond_with
  def index
    @posts = Post.order(published_at: :asc)

    respond_with @posts
  end

  # OR Using respond_with with custom options
  def index
    @posts = Post.order(published_at: :asc)

    if ['xlsx','ods','csv'].include?(request.format)
      respond_with @posts.to_xlsx(row_style: {bold: true}), filename: 'Posts'
    else
      respond_with @posts
    end
  end

  # OR Using responders
  def index
    @posts = Post.order(published_at: :asc)

    respond_to do |format|
      format.html
      format.xlsx { render xlsx: @posts }
      format.ods { render ods: @posts }
      format.csv{ render csv: @posts }
    end
  end

  # OR Using responders with custom options
  def index
    @posts = Post.order(published_at: :asc)

    respond_to do |format|
      format.html
      format.xlsx { render xlsx: @posts.to_xlsx(headers: false) }
      format.ods { render ods: Post.to_ods(instances: @posts) }
      format.csv{ render csv: @posts.to_csv(headers: false), filename: 'articles' }
    end
  end
end

Multi Sheet Spreadsheets

XLSX

axlsx_package = SpreadsheetArchitect.to_axlsx_package({headers: headers, data: data})
axlsx_package = SpreadsheetArchitect.to_axlsx_package({headers: headers, data: data}, axlsx_package)

File.open('path/to/multi_sheet_file.xlsx', 'w+b') do |f|
  f.write axlsx_package.to_stream.read
end

ODS

ods_spreadsheet = SpreadsheetArchitect.to_rodf_spreadsheet({headers: headers, data: data})
ods_spreadsheet = SpreadsheetArchitect.to_rodf_spreadsheet({headers: headers, data: data}, ods_spreadsheet)

File.open('path/to/multi_sheet_file.ods', 'w+b') do |f|
  f.write ods_spreadsheet.bytes
end

Methods

to_xlsx(options={})

Option Default Notes
data
2D Array		 Cannot be used with the :instances option.

Tabular data for the non-header row cells.
instances
Array		 Cannot be used with the :data option.

Array of class/model instances to be used as row data. Cannot be used with :data option
spreadsheet_columns
Proc/Symbol/String		 Use this option to override or define the spreadsheet columns. Normally, if this option is not specified and are using the instances option/ActiveRecord relation, it uses the classes custom spreadsheet_columns method or any custom defaults defined.
If neither of those and is an ActiveRecord model, then it will falls back to the models self.column_names		 Cannot be used with the :data option.

If a Proc value is passed it will be evaluated on the instance object.

If a Symbol or String value is passed then it will search the instance for a method name that matches and call it.
headers
Array / 2D Array		 Data for the header row cells. If using on a class/relation, this defaults to the ones provided via spreadsheet_columns. Pass false to skip the header row.
sheet_name
String		 Sheet1
header_style
Hash		 {background_color: "AAAAAA", color: "FFFFFF", align: :center, font_name: 'Arial', font_size: 10, bold: false, italic: false, underline: false} See all available style options here
row_style
Hash		 {background_color: nil, color: "000000", align: :left, font_name: 'Arial', font_size: 10, bold: false, italic: false, underline: false, format_code: nil} Styles for non-header rows. See all available style options here
column_styles
Array		 See the kitchen sink example for usage
range_styles
Array		 See the kitchen sink example for usage
conditional_row_styles
Array		 See the kitchen sink example for usage. The if/unless proc will called with the following args: row_index, row_data
merges
Array		 Merge cells. See the kitchen sink example for usage. Warning merges cannot overlap eachother, if you attempt to do so Excel will claim your spreadsheet is corrupt and refuse to open your spreadsheet.
borders
Array		 See the kitchen sink example for usage
column_types
Array		 Valid types for XLSX are :string, :integer, :float, :date, :time, :boolean, :hyperlink, nil = auto determine. You may also pass a Proc which evaluates to any of the valid types, for example ->(cell_val){ cell_val.start_with?('http') ? :hyperlink : :string }
column_widths
Array		 Sometimes you may want explicit column widths. Use nil if you want a column to autofit again.
freeze_headers
Boolean		 Make all header rows frozen/fixed so they do not scroll.
freeze
Hash		 Make all specified row and/or column frozen/fixed so they do not scroll. See example usage
skip_defaults
Boolean		 false Removes defaults and default styles. Particularily useful for heavily customized spreadsheets where the default styles get in the way.
escape_formulas
Boolean or Array		 true Pass a single boolean to apply to all cells, or an array of booleans to control column-by-column. Advisable to be set true when involved with untrusted user input. See an example of the underlying functionality. NOTE: Header row cells are not escaped.
use_zero_based_row_index
Boolean		 false Allows you to use zero-based row indexes when defining range_styles, merges, etc. Recommended to set this option for the whole project rather than per call. The original reason it was designed to be 1-based is because spreadsheet row numbers actually start with 1.

to_axlsx_spreadsheet(options={}, axlsx_package_to_join=nil)

Same options as to_xlsx

to_ods(options={})

Option Default Notes
data
2D Array		 Cannot be used with the :instances option.

Tabular data for the non-header row cells.
instances
Array		 Cannot be used with the :data option.

Array of class/model instances to be used as row data. Cannot be used with :data option
spreadsheet_columns
Proc/Symbol/String		 Use this option to override or define the spreadsheet columns. Normally, if this option is not specified and are using the instances option/ActiveRecord relation, it uses the classes custom spreadsheet_columns method or any custom defaults defined.
If neither of those and is an ActiveRecord model, then it will falls back to the models self.column_names		 Cannot be used with the :data option.

If a Proc value is passed it will be evaluated on the instance object.

If a Symbol or String value is passed then it will search the instance for a method name that matches and call it.
headers
Array / 2D Array		 Data for the header row cells. If using on a class/relation, this defaults to the ones provided via spreadsheet_columns. Pass false to skip the header row.
sheet_name
String		 Sheet1
header_style
Hash		 {background_color: "AAAAAA", color: "FFFFFF", align: :center, font_size: 10, bold: true} Note: Currently ODS only supports these options
row_style
Hash		 {background_color: nil, color: "000000", align: :left, font_size: 10, bold: false} Styles for non-header rows. Currently ODS only supports these options
column_types
Array		 Valid types for ODS are :string, :float, :date, :time, :boolean, :hyperlink, nil = auto determine. Due to RODF Issue #19, :date/:time will be converted to :string. You may also pass a Proc which evaluates to any of the valid types, for example ->(cell_val){ cell_val.start_with?('http') ? :hyperlink : :string }
skip_defaults
Boolean		 false Skip defaults and default styles. Particularly useful for heavily customized spreadsheets where the default styles get in the way.

to_rodf_spreadsheet(options={}, spreadsheet_to_join=nil)

Same options as to_ods

to_csv(options={})

Option Default Notes
data
2D Array		 Cannot be used with the :instances option.

Tabular data for the non-header row cells.
instances
Array		 Cannot be used with the :data option.

Array of class/model instances to be used as row data. Cannot be used with :data option
spreadsheet_columns
Proc/Symbol/String		 Use this option to override or define the spreadsheet columns. Normally, if this option is not specified and are using the instances option/ActiveRecord relation, it uses the classes custom spreadsheet_columns method or any custom defaults defined.
If neither of those and is an ActiveRecord model, then it will falls back to the models self.column_names		 Cannot be used with the :data option.

If a Proc value is passed it will be evaluated on the instance object.

If a Symbol or String value is passed then it will search the instance for a method name that matches and call it.
headers
Array / 2D Array		 Data for the header row cells. If using on a class/relation, this defaults to the ones provided via spreadsheet_columns. Pass false to skip the header row.

Change class-wide default method options

class Post < ApplicationRecord
  include SpreadsheetArchitect

  def spreadsheet_columns
    [:name, :content]
  end

  SPREADSHEET_OPTIONS = {
    headers: [
      ['My Post Report'],
      self.column_names.map{|x| x.titleize}
    ],
     spreadsheet_columns: :spreadsheet_columns,
    header_style: {background_color: 'AAAAAA', color: 'FFFFFF', align: :center, font_name: 'Arial', font_size: 10, bold: false, italic: false, underline: false},
    row_style: {background_color: nil, color: '000000', align: :left, font_name: 'Arial', font_size: 10, bold: false, italic: false, underline: false},
    sheet_name: self.name,
    column_styles: [],
    range_styles: [],
    conditional_row_styles: [],
    merges: [],
    borders: [],
    column_types: [],
  }
end

Change project-wide default method options

# config/initializers/spreadsheet_architect.rb

SpreadsheetArchitect.default_options = {
  headers: true,
  spreadsheet_columns: :spreadsheet_columns,
  header_style: {background_color: 'AAAAAA', color: 'FFFFFF', align: :center, font_name: 'Arial', font_size: 10, bold: false, italic: false, underline: false},
  row_style: {background_color: nil, color: '000000', align: :left, font_name: 'Arial', font_size: 10, bold: false, italic: false, underline: false},
  sheet_name: 'My Project Export',
  column_styles: [],
  range_styles: [],
  conditional_row_styles: [],
  merges: [],
  borders: [],
  column_types: [],
  use_zero_based_row_index: false,
}

Kitchen Sink Examples with Styling for XLSX and ODS

See test "kitchen sink" for XLSX and ODS

Axlsx Style Reference

I have compiled a list of all available style options for axlsx here: docs/axlsx_style_reference.md

Tips for Reducing Memory Usage

  • Use the :data option instead of active record relations
  • Utilize the light_record gem

Testing / Validating your Spreadsheets

A wise word of advice, when testing your spreadsheets I recommend to use Excel instead of LibreOffice. This is because I have seen through testing, that where LibreOffice seems to just let most incorrect things just slide on through, Excel will not even open the spreadsheet as apparently it is much more strict about the spreadsheet validations. This will help you better identify any incorrect styling or customization issues.

Contributing

We use the appraisal gem for testing multiple versions of axlsx. Please use the following steps to test using appraisal.

  1. bundle exec appraisal install
  2. bundle exec appraisal rake test

At this time the spreadsheets generated by the test suite are manually inspected. After running the tests, the test output can be viewed in tmp/

Credits

Created & Maintained by Weston Ganger - @westonganger