As the title says, I want to output the array in the yml file to the view with rails.
Specifically, I want to output the contents line by line according to the number of elements in the array.

undefined method `each'for #<String: 0x000000>

I'm writing in slim

--hoge (hoge_entities, identity [: foo_codes]). each do | foo |
  --if foo [: bar] .present?
    --foo [: bar] .each do | bar |
      span = bar
I get an error here.
# =>undefined method `each'for #<String: 0x000000>

def foo
  setting_yml [: bar]
end

foo:
  bar: bar:
    --Hello1
    --Hello2

Please describe here what you have tried for the problem.
When I wrote the rails part of the corresponding source code, it became undefined method'each'. Try it on the console

pry (main)>foo = Foo.find (1)
# =>id: 1, name: "Foo", created_at: xxx, updated_at: xxx
pry (main)>foo [: bar] .each do | bar |
pry (main) * puts bar
pry (main) * end
# =>Hello1
# =>Hello2

I was able to output, so I do not understand why slim fails.

By the way, with slim

--hoge (hoge_entities, identity [: foo_codes]). each do | foo |
  --if foo [: bar] .present?
    span = foo.bar

If it is, it will be output correctly.

This is a rudimentary question, but I would appreciate it if you could answer it! !!