问题
I have trouble with Heroku. I did heroku logs and got a error message:
/app/app/models/user.rb:1:in `<top (required)>': superclass mismatch for class User (TypeError)
/app/app/models/user.rb:1:in `<top (required)>': superclass mismatch for class User (TypeError)
2013-11-28T03:39:50.220378+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-
3.2.11/lib/active_support/dependencies.rb:251:in `require'
2013-11-28T03:39:50.220378+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-
3.2.11/lib/active_support/dependencies.rb:251:in `block in require'
2013-11-28T03:39:50.220378+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-
3.2.11/lib/active_support/dependencies.rb:251:in `require'
2013-11-28T03:39:50.220378+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-
3.2.11/lib/active_support/dependencies.rb:359:in `require_or_load'
2013-11-28T03:39:50.220378+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-
3.2.11/lib/active_support/dependencies.rb:236:in `load_dependency'
2013-11-28T03:39:50.220378+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-
3.2.11/lib/active_support/dependencies.rb:313:in `depend_on'
2013-11-28T03:39:50.220378+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-
3.2.11/lib/active_support/dependencies.rb:225:in `require_dependency'
2013-11-28T03:39:50.220378+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/engine.rb:438:in `each'
2013-11-28T03:39:50.220557+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/engine.rb:436:in
`eager_load!'
2013-11-28T03:39:50.220557+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/engine.rb:438:in `block in
eager_load!'
2013-11-28T03:39:50.220378+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/engine.rb:439:in `block (2
levels) in eager_load!'
2013-11-28T03:39:50.220557+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/application/finisher.rb:53:in
`block in <module:Finisher>'
2013-11-28T03:39:50.220557+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/initializable.rb:30:in
`instance_exec'
2013-11-28T03:39:50.220557+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/initializable.rb:30:in `run'
2013-11-28T03:39:50.220557+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/engine.rb:436:in `each'
2013-11-28T03:39:50.220557+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/initializable.rb:54:in `each'
2013-11-28T03:39:50.220557+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/initializable.rb:54:in
`run_initializers'
2013-11-28T03:39:50.220696+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'
2013-11-28T03:39:50.220557+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/application.rb:136:in
`initialize!'
2013-11-28T03:39:50.220696+00:00 app[web.1]: from /app/config/environment.rb:5:in
`<top (required)>'
2013-11-28T03:39:50.220696+00:00 app[web.1]: from /app/config.ru:in `<main>'
2013-11-28T03:39:50.220696+00:00 app[web.1]: from /app/config.ru:3:in `require'
2013-11-28T03:39:50.220557+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/initializable.rb:55:in `block
in run_initializers'
2013-11-28T03:39:50.220696+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/railtie/configurable.rb:30:in
`method_missing'
2013-11-28T03:39:50.220696+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'
2013-11-28T03:39:50.220696+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:40:in `eval'
2013-11-28T03:39:50.220696+00:00 app[web.1]: from /app/config.ru:in `new'
2013-11-28T03:39:50.221093+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/commands/server.rb:70:in
`start'
2013-11-28T03:39:50.220696+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:40:in `parse_file'
2013-11-28T03:39:50.221093+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/server.rb:304:in `wrapped_app'
2013-11-28T03:39:50.221093+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/server.rb:200:in `app'
2013-11-28T03:39:50.220696+00:00 app[web.1]: from /app/config.ru:3:in `block in
<main>'
2013-11-28T03:39:50.221093+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/commands/server.rb:46:in `app'
2013-11-28T03:39:50.221093+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/commands.rb:50:in `tap'
2013-11-28T03:39:50.221093+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/server.rb:254:in `start'
2013-11-28T03:39:50.221093+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/commands.rb:55:in `block in
<top (required)>'
2013-11-28T03:39:50.221093+00:00 app[web.1]: from
/app/vendor/bundle/ruby/2.0.0/gems/railties-3.2.11/lib/rails/commands.rb:50:in `<top
(required)>'
2013-11-28T03:39:50.221093+00:00 app[web.1]: from script/rails:6:in `require'
2013-11-28T03:39:50.221093+00:00 app[web.1]: from script/rails:6:in `<main>'
2013-11-28T03:39:51.352167+00:00 heroku[web.1]: Process exited with status 1
2013-11-28T03:39:51.375056+00:00 heroku[web.1]: State changed from starting to crashed
I can't understand why I got this error because I have no /models/user.rb/. Yes. I actually made it once and removed it already.
Could you give me some advice?
回答1:
Look at
/app/app/models/user.rb
app/app? This is off. investigate your project source, you do indeed have a user.rb file
回答2:
I'm sure that this question is not actual for you. But for people who will search for a solution here I'd like just to mention one of possible reasons. I've got such an error while following "Rails Tutorial" by Michael Hartl. And in my case it was my inattention - I've placed file example_user.rb (from chapter 4.4.5 A user class) not in the root directory of application, but in controllers folder. After I've fixed that - that trouble with Heroku disappeared.
来源：https://stackoverflow.com/questions/20257484/superclass-mismatch-for-class-user-typeerror