'Why does Rails hang when converting an ActiveRecord Collection with a single record to an array with #first?
I have the following AR statement in a Rails 5.2.3 application:
listings = subscription.listings.limit(1)
An AR collection containing a single object is immediately returned.
However... and this is very strange, the following statement:
listings.first
Immediately spikes the CPU usage to 100%, and the process must be manually killed. Not even Ctrl-C fixes it. It has to be killed from the command line.
What could be happening here?
Sources
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Source: Stack Overflow
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