Create to_xls method and route, successfully get a test xlsx file

Gemfile

@@ -24,6 +24,7 @@ gem "term-ansicolor", "~> 1.3"
 gem "terrapin", "~> 0.6.0"
 gem "thor", "~> 1.0"
 gem "twilio-ruby", "~> 4.2" # Does not use semver after v5, watch out!
+gem "spreadsheet" # For XLSForm export
 
 # JS/CSS
 gem "bootstrap", "~> 4.3"

Gemfile.lock

@@ -516,6 +516,7 @@ GEM
     ruby-jmeter (3.1.08)
       nokogiri
       rest-client
+    ruby-ole (1.2.12.2)
     ruby-progressbar (1.11.0)
     ruby-vips (2.1.4)
       ffi (~> 1.12)
@@ -551,6 +552,8 @@ GEM
     sexp_processor (4.16.1)
     spinjs-rails (1.3)
       rails (>= 3.1)
+    spreadsheet (1.3.0)
+      ruby-ole
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -722,6 +725,7 @@ DEPENDENCIES
   sentry-rails (~> 5.0)
   sentry-ruby (~> 5.0)
   spinjs-rails (~> 1.3.0)
+  spreadsheet
   sprockets (~> 3)
   sys-filesystem (~> 1.4)
   term-ansicolor (~> 1.3)

app/controllers/forms_controller.rb

@@ -235,6 +235,13 @@ def export_xml
     send_data(@form.odk_xml.download, filename: "form-#{@form.name.dasherize}-#{Time.zone.today}.xml")
   end
 
+  # XLSForm export.
+  def export_xls
+    exporter = Forms::Export.new(@form)
+    send_data(exporter.to_xls, filename: "test.xlsx")
+    # send_file ...
+  end
+
   # ODK XML export for all published forms.
   # Theoretically works for standard forms too, but they have no XML so can't be exported at this time.
   def export_all

app/decorators/action_links/form_link_builder.rb

@@ -8,6 +8,7 @@ def initialize(form)
       unless new_action?
         actions << [:export_csv, {url: h.export_form_path(form)}]
         actions << [:export_xml, {url: h.export_xml_form_path(form)}] if form.odk_xml.attached?
+        actions << [:export_xls, {url: h.export_xls_form_path(form)}]
       end
 
       unless h.admin_mode?

app/models/forms/export.rb

@@ -16,11 +16,43 @@ def to_csv
       CSV.generate do |csv|
         csv << COLUMNS
         @form.preordered_items.each do |q|
+          Rails.logger.debug("*****************")
+          Rails.logger.debug(q)
           csv << row(q)
         end
       end
     end
 
+    def to_xls
+      book = Spreadsheet::Workbook.new
+
+      # Create sheets
+      questions = book.create_worksheet :name => "survey"
+      choices = book.create_worksheet :name => "choices"
+      settings = book.create_worksheet :name => "settings"
+
+      # Questions
+      questions.row(0).push "type", "name", "label", "required", "relevant"
+      questions.row(1).push "integer", "age", "How old are you?", "yes", ""
+      questions.row(2).push "select_one yes_no","likes_pizza", "Do you like pizza?", "", ""
+
+      # Choices
+      choices.row(0).push "list_name", "name", "label"
+      choices.row(1).push "yes_no", "yes"
+      choices.row(1).push "Yes" # Try adding onto the end of a row
+      choices.row(2).push "yes_no", "no", "No"
+
+      # Settings
+      settings.row(0).push "form_title", "form_id", "version", "default_language"
+      settings.row(1).push "Test Form", 1, Time.now.strftime("%Y%m%d"), "English (en)"
+
+      # Write
+      file = StringIO.new
+      book.write(file)
+
+      file.string.html_safe
+    end
+
     private
 
     def human_readable(klass, qing)

config/routes.rb

@@ -138,6 +138,7 @@
         get "sms-guide", as: "sms_guide", action: "sms_guide"
         get "export"
         get "export_xml"
+        get "export_xls"
       end
     end