Вы можете использовать гем Report , который генерирует PDF, а также XLSX и CSV.
# a fake Manufacturer class - you probably have an ActiveRecord model
Manufacturer = Struct.new(:name, :gsa)
require 'report'
class ManufacturerReport < Report
table 'Manufacturers' do # you can have multiple tables, which translate into multiple sheets in XLSX
head do
row 'Manufacturer report'
end
body do
rows :manufacturers
column 'Name', :name
column 'GSA?', :gsa
end
end
# you would want this so that you can pass in an array
# attr_reader :manufacturers
# def initialize(manufacturers)
# @manufacturers = manufacturers
# end
def manufacturers
[
Manufacturer.new('Ford', true),
Manufacturer.new('Fischer', false),
Manufacturer.new('Tesla', nil),
]
end
end
Когда вы звоните report.pdf.path
, в каталоге tmp создается PDF:
report = ManufacturerReport.new
puts report.pdf.path #=> /tmp/185051406_Report__Pdf.pdf
puts report.xlsx.path #=> /tmp/185050541_Report__Xlsx.xlsx
Вы можете сделать это в вашем контроллере как:
@manufacturers = Manufacturer.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: @manufacturers }
format.pdf do
report = ManufacturerReport.new(@manufacturers) # using the commented-out code
send_file report.pdf.path, :type => 'application/pdf', :disposition => 'attachment', :filename => 'ManufacturersReport.pdf'
# tmp files are periodically cleaned up by the operating system, but if you want to be extra clean you can call
# report.cleanup
# but this may remove the tmp files before apache/nginx/etc. finishes delivering the file
end
end
Конечный результат:
PDF
XLSX
Обратите внимание, что в XLSX автоматически добавлен автофильтр.