更新后的宝石如：
gem 'rails', '4.1.7'
捆绑更新。工作正常，但执行rake rails:update
rake aborted!
NameError: uninitialized constant ActiveModel::MassAssignmentSecurity
rvm_path/gems/active_presenter-3.2.2/lib/active_presenter/base.rb:8:in `<class:Base>'
rvm_path/gems/active_presenter-3.2.2/lib/active_presenter/base.rb:4:in `<module:ActivePresenter>'
rvm_path/gems/active_presenter-3.2.2/lib/active_presenter/base.rb:1:in `<top (required)>'
rvm_path/gems/active_presenter-3.2.2/lib/active_presenter.rb:3:in `require'
rvm_path/gems/active_presenter-3.2.2/lib/active_presenter.rb:3:in `block in <top (required)>'
rvm_path/gems/active_presenter-3.2.2/lib/active_presenter.rb:3:in `each'
rvm_path/gems/active_presenter-3.2.2/lib/active_presenter.rb:3:in `<top (required)>'
rvm_path/gems/bundler-1.6.2/lib/bundler/runtime.rb:76:in `require'
rvm_path/gems/bundler-1.6.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
rvm_path/gems/bundler-1.6.2/lib/bundler/runtime.rb:72:in `each'
rvm_path/gems/bundler-1.6.2/lib/bundler/runtime.rb:72:in `block in require'
rvm_path/gems/bundler-1.6.2/lib/bundler/runtime.rb:61:in `each'
rvm_path/gems/bundler-1.6.2/lib/bundler/runtime.rb:61:in `require'
rvm_path/gems/bundler-1.6.2/lib/bundler.rb:132:in `require'
app_path/config/application.rb:13:in `<top (required)>'
app_path/Rakefile:5:in `<top (required)>'
(See full trace by running task with --trace)
捆绑展示
* actionmailer (4.1.7)
* actionpack (4.1.7)
* actionview (4.1.7)
* active_presenter (3.2.2)
* activemodel (4.1.7)
* activerecord (4.1.7)
* activerecord-deprecated_finders (1.0.3)
* activeresource (4.0.0)
* activesupport (4.1.7)
* acts-as-taggable-on (3.4.2)
* acts_as_list (0.1.9)
* addressable (2.3.6)
* after_party (1.2)
* airbrake (3.1.12)
* amoeba (2.0.0)
* annotate (2.5.0)
* apartment (0.24.3)
* arel (5.0.1.20140414130214)
* arrayfields (4.9.2)
* awesome_nested_set (2.1.6)
* awesome_print (1.2.0)
* axlsx (2.0.1)
* bcrypt (3.1.9)
* beesor-docs (0.9.8)
* beesor-jquery-render-rails (0.0.17)
* best_in_place (3.0.0)
* better_errors (1.0.1)
* binding_of_caller (0.7.1)
* bluff (0.1.0)
* bootstrap-sass (3.0.3.0)
* bootstrap-switch-rails (3.0.0)
* bootstrap3-datetimepicker-rails (3.1.3)
* bootstrap_sortable_rails (1.8.0)
* brakeman (2.4.3)
* builder (3.2.2)
* bullet (4.6.0)
* bundler (1.6.2)
* cane (2.6.2)
* capybara (2.4.4)
* capybara-webkit (1.3.1)
* celluloid (0.16.0)
* chosen-rails (1.0.2)
* chronic (0.10.2)
* chunky_png (1.3.3)
* churn (0.0.35)
* ci_reporter (1.9.0)
* code_analyzer (0.4.5)
* code_metrics (0.1.3)
* coderay (1.1.0)
* coffee-rails (4.1.0)
* coffee-script (2.3.0)
* coffee-script-source (1.8.0)
* colored (1.2)
* colorize (0.7.3)
* compass (0.12.3)
* compass-rails (1.1.3)
* connection_pool (2.0.0)
* cucumber (1.3.7)
* cucumber-rails (1.4.0)
* database_cleaner (1.0.1)
* debug_inspector (0.0.2)
* devise (3.4.1)
* devise_security_extension (0.8.0)
* diff-lcs (1.2.5)
* dotenv (0.10.0)
* dotenv-rails (0.10.0)
* draper (1.2.1)
* easy_translate (0.5.0)
* enumerize (0.7.0)
* enumerize-matchers (0.0.1)
* erubis (2.7.0)
* execjs (2.2.2)
* factory_girl (4.2.0)
* factory_girl_rails (4.2.1)
* faker (1.3.0)
* fastercsv (1.5.5)
* fattr (2.2.2)
* ffi (1.9.6)
* flay (2.5.0)
* flog (4.3.0)
* font-awesome-rails (4.1.0.0)
* friendly_id (4.0.10)
* fssm (0.2.10)
* gherkin (2.12.2)
* globalize (4.0.2)
* globalize-accessors (0.1.3)
* gon (4.1.0)
* haml (4.0.3)
* haml-rails (0.5.3)
* hammerjs_rails (1.1.3.1)
* highline (1.6.21)
* hike (1.2.3)
* hirb (0.7.2)
* hitimes (1.2.2)
* htmlentities (4.3.2)
* i18n (0.6.11)
* i18n-js (2.1.2)
* i18n-tasks (0.5.1)
* icheck-rails (0.9.0.2)
* infinitescrolling-rails (0.3.0)
* jquery-cookie-rails (1.3.1.1)
* jquery-rails (3.0.4)
* json (1.8.1)
* json_pure (1.8.1)
* json_spec (1.1.1)
* kaminari (0.14.1)
* kgio (2.9.2)
* konacha (3.0.0)
* language_list (1.0.0)
* launchy (2.3.0)
* libnotify (0.8.4)
* lic_provider (0.2.2)
* listen (1.0.3)
* lol_dba (1.6.0)
* mail (2.6.3)
* main (6.1.0)
* map (6.5.5)
* memory_test_fix (1.2.2)
* metric_fu (4.4.1)
* metric_fu-Saikuro (1.1.3)
* mime-types (2.4.3)
* mini_portile (0.6.1)
* minitest (5.4.3)
* momentjs-rails (2.8.3)
* multi_json (1.7.9)
* multi_test (0.1.1)
* netrc (0.8.0)
* nicescroll-rails (3.5.4.1)
* nokogiri (1.6.4.1)
* orm_adapter (0.5.0)
* parallel (1.3.3)
* pg (0.17.1)
* pjax_rails (0.3.4)
* pnotify-rails (1.2.2)
* protected_attributes (1.0.8)
* public_activity (1.4.1)
* quiet_assets (1.0.2)
* rabl (0.8.6)
* rack (1.5.2)
* rack-mini-profiler (0.1.31)
* rack-protection (1.5.3)
* rack-test (0.6.2)
* rails (4.1.7)
* rails-dev-tweaks (1.2.0)
* rails-observers (0.1.2)
* rails-timeago (2.11.1)
* rails_best_practices (1.15.4)
* railties (4.1.7)
* rainbow (2.0.0)
* raindrops (0.13.0)
* rake (10.3.2)
* rb-fchange (0.0.6)
* rb-fsevent (0.9.3)
* rb-inotify (0.9.0)
* rb-kqueue (0.2.3)
* redcard (1.1.0)
* redcarpet (3.1.1)
* redis (3.0.7)
* redis-actionpack (4.0.0)
* redis-activesupport (4.0.0)
* redis-namespace (1.4.1)
* redis-rack (1.5.0)
* redis-rails (4.0.0)
* redis-session-store (0.8.0)
* redis-store (1.1.4)
* reek (1.3.8)
* request_store (1.0.8)
* require_all (1.3.2)
* responders (1.0.0)
* rest-client (1.7.2)
* roodi (3.3.1)
* rspec (2.13.0)
* rspec-core (2.13.1)
* rspec-expectations (2.13.0)
* rspec-mocks (2.13.1)
* rspec-rails (2.13.2)
* ruby-progressbar (1.7.0)
* ruby2ruby (2.0.8)
* ruby_parser (3.4.1)
* rubyzip (1.0.0)
* sass (3.2.14)
* sass-rails (4.0.3)
* scrollToFixed_rails (1.0.0)
* seedbank (0.3.0)
* sexp_processor (4.4.4)
* shoulda-matchers (2.2.0)
* sidekiq (3.0.0)
* simple_form (3.0.2)
* simplecov (0.7.1)
* simplecov-html (0.7.1)
* simplecov-rcov (0.2.3)
* sinatra (1.4.3)
* six (0.2.0)
* slim (2.1.0)
* slop (3.6.0)
* spring (1.1.2)
* spring-commands-cucumber (1.0.1)
* spring-commands-rspec (1.0.1)
* sprockets (2.11.0)
* sprockets-rails (2.2.0)
* sqlite3 (1.3.8)
* temple (0.6.10)
* term-ansicolor (1.3.0)
* terminal-table (1.4.5)
* the_sortable_tree (2.4.0)
* thor (0.19.1)
* thread (0.1.4)
* thread_safe (0.3.4)
* tilt (1.4.1)
* timers (4.0.1)
* tins (1.3.3)
* tzinfo (1.2.2)
* uglifier (2.2.1)
* unicorn (4.8.3)
* unicorn-worker-killer (0.4.2)
* uniform_notifier (1.6.2)
* validates_overlap (0.2.0)
* warden (1.2.3)
* xpath (2.0.0)
答案 0 :(得分：0)
ActivePresenter与Rails 4.x不兼容。
ActiveModel::MassAssignmentSecurity。由于使用了Rails 4.x strong parameters。
PS。我建议逐步升级，我的意思是3.2到4.0，然后是4.0到4.1。