Question

我有以下脚本，每天在heroku上的cron上运行一次。

但是，我意识到我希望用户可以选择从网页上按下按钮来启动相同的过程。

有没有办法创建一个cron可以调用或来自Web请求的“子例程”？我不想使用运行作业的单独服务。

我只是用一个片段来说明......

letter_todos = Todo.current_date_lte(Date.today).asset_is("Letter").done_date_null

  unless letter_todos.blank? #check if there any ToDos

   # group by asset_id so that each batch is specific to the asset_id
   letter_todos.group_by(&:asset_id).each do |asset_id, letter_todos|
   #  pdf = Prawn::Document.new(:margin => 100) #format the PDF document
       html_file = ''
       letter_todos.each do |todo| #loop through all Letter_Todos

         contact = Contact.find(todo.contact_id) #get associated contact
         letter = Letter.find(todo.asset_id) #get associated Letter 

         redcloth_contact_letter = RedCloth.new(letter.substituted_message(contact, [])).to_html

         html_file = html_file + redcloth_contact_letter
         html_file = html_file + "<p style='display: none; page-break-after: always'><center> ... </center> </p>"

       end 

       kit = PDFKit.new(html_file)
       kit.stylesheets << "#{RAILS_ROOT}/public/stylesheets/compiled/pdf.css" 
       file = kit.to_pdf

       letter = Letter.find(asset_id)
       #OutboundMailer.deliver_pdf_email(file)
       kit.to_file("#{RAILS_ROOT}/tmp/PDF-#{letter.title}-#{Date.today}.pdf")

       # Create new BatchPrint record

       batch = BatchPrint.new
       batch.pdf = File.new("#{RAILS_ROOT}/tmp/PDF-#{letter.title}-#{Date.today}.pdf")

Answer 1

我是通过将相关函数放在lib（lib / tasks_n_stuff.rb，比如说）中的文件中完成的：

module TasksNStuff
    def self.do_something
        # ...doing something...
    end
end

然后我可以通过Rake任务调用：

desc 'Make sure we depend on :environment, so we can get to the Railsy stuff...'
task :do_something => :environment do
    TasksNStuff.do_something
end

或者从控制器（或任何地方，真的）：

class WhateverController < ApplicationController
    def do_something
        TasksNStuff.do_something
    end
end

由于您可以将rake任务作为cron作业运行（cd /my/rails/root; rake do_something），这应该就是您所需要的。干杯！

如何通过Rails上的用户交互在heroku上运行“cron脚本”？

1 个答案: