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Get content-type of file on rails


$ gem install mime-types
irb(main):001:0> require 'mime-types'
=> true
irb(main):002:0> MIME::Types.type_for("/Users/xxx/Downloads/sample_1920x1080.ts").first.content_type
=> "video/MP2T"

https://stackoverflow.com/a/7537309/1399891
#rails (32) #ruby (8) #content-type (1)
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