If I understand your situation, you want to run a management command fairly promptly after Django-server reboot, and not again for the duration of the server's uptime.
Cron is useful and convenient for repeated tasks. And it can be made to handle once-and-done tasks, if you keep a bit of state somewhere. There's a lot I don't know about the practical side of your situation, so I ask this question from ignorance. Can you use the __init__method of a special purpose app in INSTALLED_APPS? I don't know if the INSTALLED_APPS are created during server startup, or only as needed in response to an incoming URL. If each class (or package?) in INSTALLED_APPS gets an object created at server-boot time, you can do it within one of your apps. __init__ can start a separate thread that delays for a specific time interval and then does your web-scraping scraping. __init__() itself cannot do the wait, because there is an implicit expectation that __init__() finishes in a relatively short period of time. If the trigger event for starting the web-scraping is something like first-visit-to-your-home-page, you could probably use django signals. But I've never used signals and I can't tell you anything more about that. --- Bill On Friday, November 2, 2018 at 10:35:52 AM UTC-4, Bartosz Gańcza wrote: > > Hi everyone! > > I am somewhat of a Django beginner and I can't seem to find an easy > solution to what I need to do anywhere. > > I have a web scraping code I wish to run in the background automatically > (once) after the server is up and running. I use Docker to fire up the DB > and the web server itself but can't seem to be able to configure it to also > fire up the management command I configured that runs the scraping code (I > guess using Docker for that is either beyond my current knowledge or is > just not possible without using specialised tools like cron, which I don't > fully understand). > > Is there any way to do something like this in Django itself, without > resorting to "ready" function? (I did that at first but it stops the server > from running until the code completes and also runs it at least twice) > > Best, > Bartosz > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/db6bf171-d920-4a16-af68-e52b0afffaa0%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
