Rails: Thread won't affect database unless joined to main Thread
- by hatboysam
I have a background operation I would like to occur every 20 seconds in Rails given that some condition is true. It kicked off when a certain controller route is hit, and it looks like this
def startProcess
argId = self.id
t = Thread.new do
while (Argument.isRunning(argId)) do
Argument.update(argId)
Argument.markVotes(argId)
puts "Thread ran"
sleep 20
end
end
end
However, this code does absolutely nothing to my database unless I call "t.join" in which case my whole server is blocked for a long time (but it works).
Why can't the read commit ActiveRecords without being joined to the main thread?
The thread calls methods that look something like
def sample
model = Model.new()
model.save()
end
but the models are not saved to the DB unless the thread is joined to the main thread. Why is this? I have been banging my head about this for hours.
