Sort an array with hash elements based on a specific key [duplicate]

Question

@cases => [{"name"=>"25 Cases per 60 day", "count"=>0},
 {"name"=>"30 Cases for 60 days", "count"=>8},
 {"name"=>"10 Cases per 60 days", "count"=>5}]

If I have an object which contains the previous results how can I sort by count in DESC order? To get the instance variable cases I did

ClassName.all.collect{|e| {'name' => e.name, 'count' => e.contracts.count}}

Refer to stackoverflow.com/questions/3154111/…

rlecaro2
– rlecaro2

2014-01-30 17:57:01 +00:00
Commented Jan 30, 2014 at 17:57 — rlecaro2
– rlecaro2, Commented Jan 30, 2014 at 17:57

Phrogz · Accepted Answer · 2014-01-30 17:56:04Z

17

sorted = @cases.sort_by{ |hash| hash['count'] }.reverse
sorted = @cases.sort_by{ |hash| -hash['count'] }
sorted = @cases.sort_by{ |hash| -(hash['count'] || 0) }

The first is the simplest.

The second is what I would do.

The third is what you can do if some of the hashes are missing a 'count' value.

answered Jan 30, 2014 at 17:56

Phrogz

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1 Comment

thedevlpr Over a year ago

Worked like a charm, thanks! Gotta love this community.

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