ruby-on-rails - 未知验证器 : 'LenghtValidator' (ArgumentError) when I run RSpec

Question

当我运行命令时:bundle exec rspec spec/ 我得到这个错误:

值得注意的是:未知验证器:“LenghtValidator”(ArgumentError)

No DRb server is running. Running in local process instead ...
C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activemodel-4.0.0/lib/active_model/validations/validates.rb:116:in `rescue in b
lock in validates': Unknown validator: 'LenghtValidator' (ArgumentError)
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activemodel-4.0.0/lib/active_model/validations/validates.rb:113:in
 `block in validates'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activemodel-4.0.0/lib/active_model/validations/validates.rb:109:in
 `each'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activemodel-4.0.0/lib/active_model/validations/validates.rb:109:in
 `validates'
        from C:/Sites/rails/twitter/app/models/user.rb:4:in `<class:User>'
        from C:/Sites/rails/twitter/app/models/user.rb:1:in `<top (required)>'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `req
uire'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `blo
ck in require'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `loa
d_dependency'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `req
uire'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:329:in `req
uire_or_load'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:462:in `loa
d_missing_constant'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:183:in `con
st_missing'
        from C:/Sites/rails/twitter/spec/models/user_spec.rb:3:in `<top (required)>'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `load'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `block in
 load_spec_files'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `each'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `load_spe
c_files'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rspec-core-2.13.1/lib/rspec/core/command_line.rb:22:in `run'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:77:in `rescue in run'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:73:in `run'
        from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:17:in `block in autorun
'

Gemfile.lock:

GIT
  remote: git://github.com/thomas-mcdonald/bootstrap-sass.git
  revision: 0e88056ac5d58fb0bbd23d3fe929eac01712d964
  branch: 3
  specs:
    bootstrap-sass (3.0.0.0)
      sass (~> 3.2)

GEM
  remote: https://rubygems.org/
  specs:
    actionmailer (4.0.0)
      actionpack (= 4.0.0)
      mail (~> 2.5.3)
    actionpack (4.0.0)
      activesupport (= 4.0.0)
      builder (~> 3.1.0)
      erubis (~> 2.7.0)
      rack (~> 1.5.2)
      rack-test (~> 0.6.2)
    activemodel (4.0.0)
      activesupport (= 4.0.0)
      builder (~> 3.1.0)
    activerecord (4.0.0)
      activemodel (= 4.0.0)
      activerecord-deprecated_finders (~> 1.0.2)
      activesupport (= 4.0.0)
      arel (~> 4.0.0)
    activerecord-deprecated_finders (1.0.3)
    activesupport (4.0.0)
      i18n (~> 0.6, >= 0.6.4)
      minitest (~> 4.2)
      multi_json (~> 1.3)
      thread_safe (~> 0.1)
      tzinfo (~> 0.3.37)
    arel (4.0.1)
    atomic (1.1.14)
    bcrypt-ruby (3.0.1-x86-mingw32)
    builder (3.1.4)
    capybara (2.1.0)
      mime-types (>= 1.16)
      nokogiri (>= 1.3.3)
      rack (>= 1.0.0)
      rack-test (>= 0.5.4)
      xpath (~> 2.0)
    childprocess (0.3.9)
      ffi (~> 1.0, >= 1.0.11)
    coffee-rails (4.0.1)
      coffee-script (>= 2.2.0)
      railties (>= 4.0.0, < 5.0)
    coffee-script (2.2.0)
      coffee-script-source
      execjs
    coffee-script-source (1.6.3)
    diff-lcs (1.2.4)
    erubis (2.7.0)
    execjs (2.0.2)
    ffi (1.9.1)
    hike (1.2.3)
    i18n (0.6.5)
    jbuilder (1.0.2)
      activesupport (>= 3.0.0)
    jquery-rails (3.0.4)
      railties (>= 3.0, < 5.0)
      thor (>= 0.14, < 2.0)
    json (1.8.1)
    mail (2.5.4)
      mime-types (~> 1.16)
      treetop (~> 1.4.8)
    mime-types (1.25)
    mini_portile (0.5.2)
    minitest (4.7.5)
    multi_json (1.8.2)
    nokogiri (1.6.0-x86-mingw32)
      mini_portile (~> 0.5.0)
    pg (0.15.1-x86-mingw32)
    polyglot (0.3.3)
    rack (1.5.2)
    rack-test (0.6.2)
      rack (>= 1.0)
    rails (4.0.0)
      actionmailer (= 4.0.0)
      actionpack (= 4.0.0)
      activerecord (= 4.0.0)
      activesupport (= 4.0.0)
      bundler (>= 1.3.0, < 2.0)
      railties (= 4.0.0)
      sprockets-rails (~> 2.0.0)
    rails_12factor (0.0.2)
      rails_serve_static_assets
      rails_stdout_logging
    rails_serve_static_assets (0.0.1)
    rails_stdout_logging (0.0.3)
    railties (4.0.0)
      actionpack (= 4.0.0)
      activesupport (= 4.0.0)
      rake (>= 0.8.7)
      thor (>= 0.18.1, < 2.0)
    rake (10.1.0)
    rdoc (3.12.2)
      json (~> 1.4)
    rspec-core (2.13.1)
    rspec-expectations (2.13.0)
      diff-lcs (>= 1.1.3, < 2.0)
    rspec-mocks (2.13.1)
    rspec-rails (2.13.1)
      actionpack (>= 3.0)
      activesupport (>= 3.0)
      railties (>= 3.0)
      rspec-core (~> 2.13.0)
      rspec-expectations (~> 2.13.0)
      rspec-mocks (~> 2.13.0)
    rubyzip (0.9.9)
    sass (3.2.12)
    sass-rails (4.0.1)
      railties (>= 4.0.0, < 5.0)
      sass (>= 3.1.10)
      sprockets-rails (~> 2.0.0)
    sdoc (0.3.20)
      json (>= 1.1.3)
      rdoc (~> 3.10)
    selenium-webdriver (2.35.1)
      childprocess (>= 0.2.5)
      multi_json (~> 1.0)
      rubyzip (< 1.0.0)
      websocket (~> 1.0.4)
    sprockets (2.10.0)
      hike (~> 1.2)
      multi_json (~> 1.0)
      rack (~> 1.0)
      tilt (~> 1.1, != 1.3.0)
    sprockets-rails (2.0.1)
      actionpack (>= 3.0)
      activesupport (>= 3.0)
      sprockets (~> 2.8)
    sqlite3 (1.3.8-x86-mingw32)
    thor (0.18.1)
    thread_safe (0.1.3)
      atomic
    tilt (1.4.1)
    treetop (1.4.15)
      polyglot
      polyglot (>= 0.3.1)
    turbolinks (1.1.1)
      coffee-rails
    tzinfo (0.3.38)
    uglifier (2.1.1)
      execjs (>= 0.3.0)
      multi_json (~> 1.0, >= 1.0.2)
    websocket (1.0.7)
    xpath (2.0.0)
      nokogiri (~> 1.3)

PLATFORMS
  x86-mingw32

DEPENDENCIES
  bcrypt-ruby (= 3.0.1)
  bootstrap-sass!
  capybara (= 2.1.0)
  coffee-rails (= 4.0.1)
  jbuilder (= 1.0.2)
  jquery-rails (= 3.0.4)
  pg (= 0.15.1)
  rails (= 4.0.0)
  rails_12factor (= 0.0.2)
  rspec-rails (= 2.13.1)
  sass-rails (= 4.0.1)
  sdoc (= 0.3.20)
  selenium-webdriver (= 2.35.1)
  sqlite3 (= 1.3.8)
  turbolinks (= 1.1.1)
  uglifier (= 2.1.1)

Answer 1

您实际上可能打错了“长度”一词，并且 Rails 正在推断验证器的名称。检查这一行:

C:/Sites/rails/twitter/app/models/user.rb:4

而且您几乎肯定会在验证定义中找到单词 lenght。修正该拼写错误，这应该有效。