Module: ActiveScaffold::Actions::Export

Defined in:
lib/active_scaffold/actions/export.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/active_scaffold/actions/export.rb', line 3

def self.included(base)
  base.before_action :export_authorized?, :only => [:export]
  base.before_action :show_export_authorized?, :only => [:show_export]
end

Instance Method Details

#export ⇒ Object

if invoked directly, will use default configuration



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# File 'lib/active_scaffold/actions/export.rb', line 22

def export
  export_config = active_scaffold_config.export
  if params[:export_columns].nil?
    export_columns = {}
    export_config.columns.each { |col| export_columns[col.to_sym] = 1 }
    options = {
      :export_columns => export_columns,
      :full_download => export_config.default_full_download.to_s,
      :delimiter => export_config.default_delimiter,
      :skip_header => export_config.default_skip_header.to_s
    }
    params.merge!(options)
  end

  set_includes_for_columns(:export)
  @export_config = export_config
  # Make sure active_scaffold's find_page is dealing with the same list of
  # columns. Prevents an invalid SQL query when exporting after filtering
  # with field_search against a relation column, and that relation column is
  # not included in the set of export columns.
  @list_columns = @export_columns

  # this is required if you want this to work with IE
  if request.env['HTTP_USER_AGENT'] =~ /msie/i
    response.headers['Pragma'] = "public"
    response.headers['Cache-Control'] = "no-cache, must-revalidate, post-check=0, pre-check=0"
    response.headers['Expires'] = "0"
  end
  response.headers['Content-Disposition'] = "attachment; filename=#{export_file_name}"

  unless defined? Mime::XLSX
    Mime::Type.register "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", :xlsx
  end

  respond_to do |format|
    format.csv do
      response.headers['Content-type'] = 'text/csv'
      # start streaming output
      self.response_body = Enumerator.new do |y|
        find_items_for_export do |records|
          @records = records
          str = render_to_string :partial => 'export', :layout => false, :formats => [:csv]
          y << str
          params[:skip_header] = 'true' # skip header on the next run
        end
      end
    end
    format.xlsx do 
      response.headers['Content-type'] = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
      p = Axlsx::Package.new
      header = p.workbook.styles.add_style sz: 11, b: true,:bg_color => "69B5EF", :fg_color => "FF", alignment: { horizontal: :center }
      p.workbook.add_worksheet(name: active_scaffold_config.label) do |sheet|
        sheet.add_row(@export_columns.collect { |column| view_context.format_export_column_header_name(column) }, style: header) unless params[:skip_header]
        find_items_for_export do |records|
          records.each do |record|
            sheet.add_row @export_columns.collect { |column| view_context.get_export_column_value(record, column, false) }
          end
        end
      end
      stream = p.to_stream # when adding rows to sheet, they won't pass to this stream if declared before. axlsx issue?
      self.response_body = Enumerator.new do |y|
        y << stream.read 
      end
    end

  end
end

#show_export ⇒ Object

display the customization form or skip directly to export



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# File 'lib/active_scaffold/actions/export.rb', line 9

def show_export
  @export_config = active_scaffold_config.export
  respond_to do |wants|
    wants.html do
      render(:partial => 'show_export', :layout => true)
    end
    wants.js do
      render(:partial => 'show_export', :layout => false)
    end
  end
end