HGETALL returns array instead of hash

[raphaottoni]

Acessing the key from redis-rb gem using hgetall return a hash:

when accessing the same key with a lua script using wolverine it returns a array as shown:

hmget.lua:

Already tested, it was not messagePack fault =/

[yaauie]

The redis-rb gem has special instructions to convert the response in Redis#hgetall into a ruby hash, but those instructions aren't present on the generic Redis#evalscript or Redis#evalsha commands, so you'll need to convert it to a ruby hash yourself.

[raphaottoni]

Thanks for your answer @yaauie !

If I may ask, what do you think would be more time efficient:

1. Save the value as a ruby's hash in form of string and than use eval to transform it
   2 ) Split that hash into multiple gets, each with a single value
2. Save the value as a json object in form of string and than use oj gem to load it

I also created a stackoverflow question about this HGETALL issue, if you don't mind, it would be nice to have your answer there.
http://stackoverflow.com/questions/30929947/hgetall-returns-array-instead-of-hash-when-using-lua-scripting-rails-redis-lua

Really thanks for the help

[yaauie]

None of those; use Hash[] to convert the Array response into a Hash:

response = ["an", "array", "with", "an", "even", "number", "of", "entries"]
#=>  ["an", "array", "with", "an", "even", "number", "of", "entries"]
a_hash = Hash[*response]
#=>  {"an"=>"array","with"=>"an", "even"=>"number", "of"=>"entries"]

[raphaottoni]

Thank @yaauie !