replace Ruby #inject with #each_with_object
ruby
linter warning: Use `each_with_object` instead of `inject`.
files_attributes = %i[foo bar] # => [:foo, :bar]
files_attributes.inject({}) { |h, attr| h[attr] = []; h }
# => {foo: [], bar: []} files_attributes.each_with_object({}) { |attr, hash| hash[attr] = [] }
# => {foo: [], bar: []}