Convert Hash Into And Array Of Strings

Question

{"offer:manage_all"=>["0", "1"], "offer:index"=>["0"], "offer:new"=>["0"], "offer:show"=>["0"], "offer:create"=>["0"], "offer:update"=>["0"], "offer:destroy"=>["0"], "job:manage_all"=>["0", "1"], "job:index"=>["0", "1"], "job:new"=>["0"], "job:create"=>["0"], "job:edit"=>["0"], "job:update"=>["0"], "job:destroy"=>["0"], "user:manage_all"=>["0", "1"], "user:index"=>["0"], "user:new"=>["0"], "user:create"=>["0"], "user:edit"=>["0"], "user:update"=>["0"], "user:destroy"=>["0"], "account_access:manage_all"=>["0", "1"], "role:manage_all"=>["0", "1"], "role:index"=>["0"], "role:new"=>["0"], "role:create"=>["0"], "role:edit"=>["0"], "role:update"=>["0"], "role:destroy"=>["0"], "welcome_package:manage_all"=>["0", "1"]}

I need to convert this hash into a string.

If the key has a value of 1 the key needs to be pushed to a an array.

The above will has will need to equal this because they are the keys with a value that includes 1.

["offer:manage_all", "job:manage_all", "job:index", "account_access:manage_all", "role:manage_all", "welcome_package:manage_all"]

Thank you in advance.

In future, it's easier for the reader if you give an example that is as small as possible but still covers all the bases. Also, it's helpful if you assign a variable to each of the example's input objects (e.g., h = { "offer:manage_all"...}) so that readers can refer to the variable (h) in answers and comments without having to define it (and all readers reference the same variable). — Cary Swoveland
– Cary Swoveland, Commented Sep 13, 2016 at 6:00

Cary Swoveland · Accepted Answer · 2016-09-13 05:54:13Z

4

Given the hash:

h = {"cat"=>["0", "1"], "dog"=>["0"], "pig"=>["0", "1"], "owl"=>["0"], "hen"=>["0", "1"] }

I would write

h.keys.select { |k| h[k].include? "1" }
  #=> ["cat", "pig", "hen"]

answered Sep 13, 2016 at 5:54

Cary Swoveland

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Bartłomiej Gładys · Accepted Answer · 2016-09-13 05:17:16Z

try method select and keys

hash = {"offer:manage_all"=>["0", "1"], "offer:index"=>["0"], "offer:new"=>["0"], "offer:show"=>["0"], "offer:create"=>["0"], "offer:update"=>["0"], "offer:destroy"=>["0"], "job:manage_all"=>["0", "1"], "job:index"=>["0", "1"], "job:new"=>["0"], "job:create"=>["0"], "job:edit"=>["0"], "job:update"=>["0"], "job:destroy"=>["0"], "user:manage_all"=>["0", "1"], "user:index"=>["0"], "user:new"=>["0"], "user:create"=>["0"], "user:edit"=>["0"], "user:update"=>["0"], "user:destroy"=>["0"], "account_access:manage_all"=>["0", "1"], "role:manage_all"=>["0", "1"], "role:index"=>["0"], "role:new"=>["0"], "role:create"=>["0"], "role:edit"=>["0"], "role:update"=>["0"], "role:destroy"=>["0"], "welcome_package:manage_all"=>["0", "1"]}

keys = hash.select{ |key,val| val.include? "1" }.keys

#=> ["offer:manage_all", "job:manage_all", "job:index", "user:manage_all", "account_access:manage_all", "role:manage_all", "welcome_package:manage_all"]

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