[FIXED] Lock action vote after a deadline time, unlock when editing the instance voted in Django

Issue

As I say in the title, I want to allow a user to vote on an instance named, Course and lock the vote after 72 hours or 3 days (In my example, it will be 2 minutes). Where I get stuck is that I want to allow users to edit vote if the course has been edited by its owner. When a course being edited, all its votes must be unlocked.

How bad today is, All the logic are gone, I can't think anymore, already tear off multiple sheets of paper!

So far, I can lock a vote, I mean I think I lock it.

''' stuff '''
if vote:
    NOW = datetime.datetime.now()
    DEADLINE = 2 # minutes
    if (NOW - course.date_edited).total_seconds() < (DEADLINE * 60):
        vote.amount = amount
        vote.save()
 else:
     vote = Vote.objects.create(
        user = user,
        amount = amount,
        content_object = course,
     )

date_edited for the the 2 models are set to auto_now_add = True in db

I think another approach is to edit the date for all the votes for a course when editing it, like:

   course.votes.all().update(date_voted=....) # I am not sure

let me know how to do it. Thank you in advance!

Solution

You can set auto_now=True for date_voted field and add date_vote_created with auto_now_add=True. And in your view check if course has been changed after this date also:

if vote:
    NOW = datetime.datetime.now()
    DEADLINE = 2 # minutes
    if course.date_edited > vote.date_voted or (NOW - vote.date_vote_created).total_seconds() < (DEADLINE * 60):
        vote.amount = amount
        vote.save()

UPD

To unlock vote for two minutes after course has been changed you can reset date_vote_created in separate if blocks.

if vote:
    NOW = datetime.datetime.now()
    DEADLINE = 2 # minutes
    if course.date_edited > vote.date_voted:
        vote.date_vote_created = NOW
        vote.save()
    if course.date_edited > vote.date_voted or (NOW - vote.date_vote_created).total_seconds() < (DEADLINE * 60): 
        vote.amount = amount
        vote.save()

UPD #2

if course.date_edited > vote.date_voted:
    vote.amount = amount
    vote.date_vote_created = NOW
    vote.save()
elif (NOW - vote.date_vote_created).total_seconds() < (DEADLINE * 60): 
    vote.amount = amount
    vote.save()
else:
    print("Vote locked")

Answered By - neverwalkaloner