我改变了根:'课程#index'到
root(' lesson #index')
表示错误
/home/govisun/.rvm/gems/ruby-2.1.0/gems/actionpack-4.1.8/lib/action_dispatch/routing/mapper.rb:1504:in root': must be called with a path and/or options (ArgumentError)
from /home/govisun/Documents/LessonApp/config/routes.rb:5:in
阻止'
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/actionpack-4.1.8/lib/action_dispatch/routing/route_set.rb:337:in instance_exec'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/actionpack-4.1.8/lib/action_dispatch/routing/route_set.rb:337:in
eval_block'
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/actionpack-4.1.8/lib/action_dispatch/routing/route_set.rb:315:in draw'
from /home/govisun/Documents/LessonApp/config/routes.rb:1:in
'
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:241:in load'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:241:in
阻止加载'
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:232:in load_dependency'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:241:in
loading'
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/application/routes_reloader.rb:40:in block in load_paths'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/application/routes_reloader.rb:40:in
每个'
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/application/routes_reloader.rb:40:in load_paths'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/application/routes_reloader.rb:16:in
重新加载!'
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/application/routes_reloader.rb:26:in block in updater'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/activesupport-4.1.8/lib/active_support/file_update_checker.rb:75:in
来电'
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from /home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/application/routes_reloader.rb:27:in
更新程序'
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/application/routes_reloader.rb:7:in execute_if_updated'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/application/finisher.rb:71:in
阻止'
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:30:in instance_exec'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:30:in
run'
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:55:in block in run_initializers'
from /home/govisun/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/tsort.rb:226:in
阻止tsort_each'
来自/home/govisun/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/tsort.rb:348:in block (2 levels) in each_strongly_connected_component'
from /home/govisun/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/tsort.rb:427:in
each_strongly_connected_component_from'
来自/home/govisun/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/tsort.rb:347:in block in each_strongly_connected_component'
from /home/govisun/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/tsort.rb:345:in
每个'
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from /home/govisun/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/tsort.rb:345:in
each_strongly_connected_component'
来自/home/govisun/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/tsort.rb:224:in tsort_each'
from /home/govisun/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/tsort.rb:205:in
tsort_each'
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/initializable.rb:54:in run_initializers'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/application.rb:300:in
初始化!'
来自/home/govisun/Documents/LessonApp/config/environment.rb:5:in <top (required)>'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in
要求&#39;
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in block in require'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:232:in
load_dependency&#39;
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/activesupport-4.1.8/lib/active_support/dependencies.rb:247:in require'
from /home/govisun/Documents/LessonApp/config.ru:3:in
阻止&#39;
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in instance_eval'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in
初始化&#39;
来自/home/govisun/Documents/LessonApp/config.ru:in new'
from /home/govisun/Documents/LessonApp/config.ru:in
&#39;
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/rack-1.5.2/lib/rack/builder.rb:49:in eval'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/rack-1.5.2/lib/rack/builder.rb:49:in
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来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/rack-1.5.2/lib/rack/builder.rb:40:in parse_file'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/rack-1.5.2/lib/rack/server.rb:277:in
build_app_and_options_from_config&#39;
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/rack-1.5.2/lib/rack/server.rb:199:in app'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/commands/server.rb:50:in
app&#39;
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/rack-1.5.2/lib/rack/server.rb:314:in wrapped_app'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/commands/server.rb:130:in
log_to_stdout&#39;
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from /home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:81:in
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from /home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.rb:76:in
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from /home/govisun/.rvm/gems/ruby-2.1.0/gems/railties-4.1.8/lib/rails/commands.rb:17:in
&#39;
来自/ home / govisun / Documents / LessonApp / bin / rails:8:require'
from /home/govisun/Documents/LessonApp/bin/rails:8:in
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from /home/govisun/.rvm/gems/ruby-2.1.0/gems/spring-1.2.0/lib/spring/client/rails.rb:27:in
来电&#39;
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from /home/govisun/.rvm/gems/ruby-2.1.0/gems/spring-1.2.0/lib/spring/client.rb:26:in
运行&#39;
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/spring-1.2.0/bin/spring:48:in <top (required)>'
from /home/govisun/.rvm/gems/ruby-2.1.0/gems/spring-1.2.0/lib/spring/binstub.rb:11:in
loading&#39;
来自/home/govisun/.rvm/gems/ruby-2.1.0/gems/spring-1.2.0/lib/spring/binstub.rb:11:in <top (required)>'
from /home/govisun/Documents/LessonApp/bin/spring:16:in
要求&#39;
来自/ home / govisun / Documents / LessonApp / bin / spring:16:<top (required)>'
from bin/rails:3:in
加载&#39;
来自bin / rails:3:在`&#39;
它起作用了: - )
答案 0 :(得分:0)
应该是root 'lesson#index'
或root to: path
,如果您要使用(),请确保没有空格root('lesson#index')
。查看api了解更多信息。