当我使用rspec进行一些测试时：bundle exec rspec spec/终端会向我抛出此错误。但在我的route.rb中，我认为我只定义了一个根路径
CalebdeMacBook-Pro:sample_app Caleb$ bundle exec rspec spec/
/Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/route_set.rb:434:in `add_route': Invalid route name, already in use: 'root' (ArgumentError)
You may have defined two routes with the same name using the `:as` option, or you may be overriding a route already defined by a resource with the same naming. For the latter, you can restrict the routes created with `resources` as explained here:
http://guides.rubyonrails.org/routing.html#restricting-the-routes-created
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1445:in `add_route'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1422:in `decomposed_match'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1403:in `block in match'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1394:in `each'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1394:in `match'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:330:in `root'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1464:in `root'
from /Users/Caleb/rubyonrails/sample_app/config/routes.rb:13:in `block in <top (required)>'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/route_set.rb:341:in `instance_exec'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/route_set.rb:341:in `eval_block'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/route_set.rb:319:in `draw'
from /Users/Caleb/rubyonrails/sample_app/config/routes.rb:1:in `<top (required)>'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:223:in `load'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:223:in `block in load'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:214:in `load_dependency'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:223:in `load'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:40:in `each'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:40:in `load_paths'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:16:in `reload!'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:26:in `block in updater'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/file_update_checker.rb:75:in `call'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/file_update_checker.rb:75:in `execute'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:27:in `updater'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:6:in `execute_if_updated'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/finisher.rb:69:in `block in <module:Finisher>'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/initializable.rb:30:in `instance_exec'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/initializable.rb:30:in `run'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/initializable.rb:55:in `block in run_initializers'
from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each'
from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'
from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from'
from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component'
from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:180:in `each'
from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component'
from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/initializable.rb:54:in `run_initializers'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application.rb:215:in `initialize!'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /Users/Caleb/rubyonrails/sample_app/config/environment.rb:5:in `<top (required)>'
from /Users/Caleb/rubyonrails/sample_app/spec/spec_helper.rb:3:in `require'
from /Users/Caleb/rubyonrails/sample_app/spec/spec_helper.rb:3:in `<top (required)>'
from /Users/Caleb/rubyonrails/sample_app/spec/models/event_spec.rb:1:in `require'
from /Users/Caleb/rubyonrails/sample_app/spec/models/event_spec.rb:1:in `<top (required)>'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `load'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `block in load_spec_files'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `each'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `load_spec_files'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/command_line.rb:22:in `run'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:80:in `run'
from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:17:in `block in autorun'
routes.rb中：
SampleApp::Application.routes.draw do
resources :users
resources :sessions, only: [:new, :create, :destroy]
resources :events do
member do
get :members
end
collection do
get :search
end
end
resources :eventjoinings, only: [:create, :destroy]
root to: 'static_pages#home'
match '/signup', to: 'users#new', via: 'get'
match '/signin', to: 'sessions#new', via: 'get'
match '/signout', to: 'sessions#destroy', via: 'delete'
match '/help', to: 'static_pages#help', via: 'get'
match '/about', to: 'static_pages#about', via: 'get'
match '/contact', to: 'static_pages#contact', via: 'get'
match '/create', to: 'events#new', via: 'get'
end
rake routes：
users GET /users(.:format) users#index
POST /users(.:format) users#create
new_user GET /users/new(.:format) users#new
edit_user GET /users/:id/edit(.:format) users#edit
user GET /users/:id(.:format) users#show
PATCH /users/:id(.:format) users#update
PUT /users/:id(.:format) users#update
DELETE /users/:id(.:format) users#destroy
sessions POST /sessions(.:format) sessions#create
new_session GET /sessions/new(.:format) sessions#new
session DELETE /sessions/:id(.:format) sessions#destroy
members_event GET /events/:id/members(.:format) events#members
search_events GET /events/search(.:format) events#search
events GET /events(.:format) events#index
POST /events(.:format) events#create
new_event GET /events/new(.:format) events#new
edit_event GET /events/:id/edit(.:format) events#edit
event GET /events/:id(.:format) events#show
PATCH /events/:id(.:format) events#update
PUT /events/:id(.:format) events#update
DELETE /events/:id(.:format) events#destroy
eventjoinings POST /eventjoinings(.:format) eventjoinings#create
eventjoining DELETE /eventjoinings/:id(.:format) eventjoinings#destroy
signup GET /signup(.:format) users#new
signin GET /signin(.:format) sessions#new
signout DELETE /signout(.:format) sessions#destroy
help GET /help(.:format) static_pages#help
about GET /about(.:format) static_pages#about
contact GET /contact(.:format) static_pages#contact
create GET /create(.:format) events#new
root GET / static_pages#home
答案 0 :(得分：2)
这两条命名路线：
match '/signin', to: 'sessions#new', via: 'get'
match '/signout', to: 'sessions#destroy', via: 'delete'
覆盖使用以下设置的路线：
resources :sessions, only: [:new, :create, :destroy]
将该行更改为：
resources :sessions, only: [:create]
假设你甚至需要那条路线。