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posts read may enter concurrently, retry

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Sam Saffron 2015-06-01 11:55:07 +10:00
parent 9787cb07aa
commit 83559bbf45
1 changed files with 10 additions and 2 deletions
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12
app/models/user.rb
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@ -373,13 +373,21 @@ class User < ActiveRecord::Base
create_visit_record!(date) unless visit_record_for(date) create_visit_record!(date) unless visit_record_for(date)
end end
def update_posts_read!(num_posts, now=Time.zone.now) def update_posts_read!(num_posts, now=Time.zone.now, _retry=false)
if user_visit = visit_record_for(now.to_date) if user_visit = visit_record_for(now.to_date)
user_visit.posts_read += num_posts user_visit.posts_read += num_posts
user_visit.save user_visit.save
user_visit user_visit
else else
create_visit_record!(now.to_date, num_posts) begin
create_visit_record!(now.to_date, num_posts)
rescue ActiveRecord::RecordNotUnique
if !_retry
update_posts_read!(num_posts, now, _retry=true)
else
raise
end
end
end end
end end