I've been trying to implement a DelayedJob custom job for a very long time, but am not finding much information online in terms of how to do this from start to finish, and am finding almost nothing that is not about sending mass emails (I've read collectiveidea's Github intro, Railscasts, SO questions, etc). As someone relatively new to Rails, I imagine that while the instructions are likely clear for someone more experienced, they are not clear enough for someone at my level to understand how to get this to work properly.
The aim of my task is to run the job, and then destroy the object (I am aware that DelayedJob destroys all completed jobs, but I also want the object destroyed from my database as well upon completion of the job.)
Previously, I was doing this with a DelayedJob non-custom job in my controller's create method: user.delay.scrape, followed by user.delay.destroy, which worked well. Therefore, everything else in my application is working fine, and the problem lies strictly in how I am setting up this custom job. However, for various reasons, it would be much better in this case to create a custom job.
Below is the current (non-working) way I have DelayedJob set up in my app. However, when I run the app, the console reports: uninitialized constant UsersController::UserScrapeJob. Any suggestions of how to get this to work properly would be greatly appreciated, and I'd be happy to answer any questions about this request.
Here is my model:
class User < ActiveRecord::Base
def scrape
some code here...
end
end
In my controller, the delayed job needs to function as part of the create method.
And here is my controller (with only the create method shown):
class UsersController < ApplicationController
@user = User.new(params[:user])
if @user.save
Delayed::Job.enqueue UserScrapeJob.new(user.id)
else
render :action => 'new'
end
end
And here is the job file userScrapeJob.rb, which is in the app/jobs folder:
class UserScrapeJob < Struct.new(:user_id)
def perform
user = User.find(user_id)
user.scrape
user.destroy
end
end
You have a typo when you create the job, the name of the class is UserScrapeJob, with a capital 'U' (name of classes in ruby are constants).
Delayed::Job.enqueue UserScrapeJob.new(user.id)
You also have a syntax error in the if, it's if ... else ... end, and not if ... end else ... end