CODEWITHSUNDEEP
rubyamazon-web-servicesruby-on-rails-4amazon-s3
Don P
Don P

Reputation: 63627

How can I enumerate all files in an S3 folder within a bucket?

How can I get the names and contents of each file in a specific S3 bucket's directory, using the Ruby SDK?

Enumerating the objects in an S3 bucket is straightforward (e.g. my_bucket). From the docs:

bucket = s3.buckets['my_bucket']
bucket.objects.each do |obj|
  puts obj.key
end

But now if I want all the files in the directory my_bucket/some_folder, I don't know how to enumerate them, and I can't find anything in the docs surprisingly. I tried switching my_bucket with my_bucket/some_folder, but that gave an AWS error. Any ideas?

Upvotes: 2

Views: 1225

Answers (1)

Robert Krzyzanowski
Robert Krzyzanowski

Reputation: 9344

You can use the .with_prefix method:

bucket.objects.with_prefix('some/folder/')

You can then fetch them one by one. The above returns an Enumerator. If you call .map on it, you can access, e.g., when it was .last_modified, among other things.

Upvotes: 4

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