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"]}

我需要将此哈希转换为字符串。

如果密钥的值为1，则需要将密钥推送到数组。

以上将需要与此相等，因为它们是具有包含1的值的键。

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

提前谢谢。

Answer 1

给出哈希：

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

我会写

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

Answer 2

尝试方法select和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"]

将哈希转换为字符串数组

2 个答案: