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ruby-on-railsbundler

Ruby on Rails: Gem Dependency Issues

I am trying to install the most recent version of haml, simple_form, and devise to my Ruby on Rails application, but I cannot seem to get them working with the Bundler tool. How should I proceed in order to get past the dependency issues?

This is the error raised by the Bundler tool:

Bundler could not find compatible versions for gem "activemodel":

  In snapshot (Gemfile.lock):
    activemodel (= 5.1.1)

  In Gemfile:
    rails (~> 5.1.1) was resolved to 5.1.1, which depends on
      activemodel (= 5.1.1)

    rails (~> 5.1.1) was resolved to 5.1.1, which depends on
      activemodel (= 5.1.1)

    simple_form (~> 3.4) was resolved to 3.4.0, which depends on
      activemodel (< 5.1, > 4)

    web-console (>= 3.3.0) was resolved to 3.5.1, which depends on
      activemodel (>= 5.0)
Solution

  • Unfortunately, simple_form is not compatible yet with Rails 5.1 as you can see from this commit https://github.com/plataformatec/simple_form/commit/8d15b7ebc8096348b611e9f2905a2576a5bce508

    You'll either have to wait for a new version of simple_form or use an earlier version.