I used padrino-0.14.1.1 and activesupport-5.1.1 in combination and I generate padrino admin app. When I display the login page (/admin/sessions/new) the following error occurred and become 500 error page.
DEBUG - TEMPLATE (0.0007s) /sessions/new
2017-11-07 20:23:01 - NoMethodError - undefined method `humanize' for "login.title":String:
/Path/to/app/'vendor/bundle' /ruby/2.3.0/gems/padrino-admin-0.14.1.1/lib/padrino-admin/helpers/view_helpers.rb:43:in `padrino_admin_translate'
...
I think it is not a bug of Padrino, because I cannot find same problems in the Internet. And I add the following require to the beginning of view_helpers.rb provisionaly.
require 'active_support'
require 'active_support/core_ext/string'
However, I think it is not good to edit Padrino's files because of my application problem. Please let me know if you have any other good countermeasures.
I got the answer of this question from Padrino maintainer on Github. And I tried the suggestion in the answer, that worked well. The answer is following.
--
Looks like a bug due to the ongoing effort to remove the ActiveSupport dependency from Padrino.
You don't need to update view_helpers.rb - creating a file in config/initializers should be sufficient as a temporary stop-gap until the bug is fixed.
# config/initializers/extra_requires.rb
require "active_support"
require "active_support/core_ext/string"