Mit Rails 3 funktionierte mein Heroku + MongoHQ-Setup nach dem Upgrade von Mongoid 2.x auf Mongoid 3.x nicht mehr. Das Lustige ist, dass meine Entwicklungs- und Test-Frameworks und meine gesamte Testsuite in Ordnung sind.

Ich vermute, dass das Problem bei meiner mongoid.yml-Datei liegt, aber ich habe versucht, die Dokumente, Google und Stackoverflow zu durchsuchen, und alle vorgeschlagenen Formate verwendet, einschließlich der folgenden:Heroku Mongohq und Mongoid Mongo :: ConnectionFailure oder eigentlich das:https://gist.github.com/2900804

AKTUALISIERT am 16. Juli: So sieht meine mongoid.yml-Datei aus, nachdem ich mehrere Dinge ausprobiert habeNach dem, was Jason vom MongoHQ vorgeschlagen hatte:

development:
  sessions:
    default:
      database: development
      hosts:
        - localhost:27017

test:
  sessions:
    default:
      database: test
      hosts:
        - localhost:27017

production:
  sessions:
    default:
      uri: <%= ENV['MONGOHQ_URL'] %>
      options:
        skip_version_check: true
        safe: true

(Meines Erachtens ist es im Wesentlichen dasselbe wie das in den obigen Links, außer dass es die URI verwendet. Ich habe es andersherum versucht und die MONGOHQ_URL auch in separate Felder aufgeteilt, aber es hat nicht geholfen.)

Ich habe versucht, mongoid auf 3.0.0rc zu setzen und die Version in meinem Gemfile leer zu lassen. Die Verwendung der Github-Version ist aufgrund von HTTPS-Zertifikaten oder ähnlichem fehlgeschlagen, daher habe ich es nicht mehrmals versucht.

Was der Action Controller sagt, ist folgendes:

Moped::Errors::OperationFailure in Home#index

Showing /app/app/views/home/index.html.haml where line #2 raised:

The operation: #<Moped::Protocol::Command
  @length=68
  @request_id=4
  @response_to=0
  @op_code=2004
  @flags=[:slave_ok]
  @full_collection_name=".$cmd"
  @skip=0
  @limit=-1
  @selector={:count=>:posts, :query=>{}}
  @fields=nil>
failed with error "db assertion failure"

und wenn ich renne

heroku run console 

Ich verstehe:

irb(main):052:0> Location.create!
NoMethodError: undefined method `[]' for nil:NilClass
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:74:in `block in command'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:522:in `[]'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:522:in `block (3 levels) in flush'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:521:in `map'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:521:in `block (2 levels) in flush'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:113:in `ensure_connected'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:517:in `block in flush'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:532:in `logging'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:516:in `flush'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:505:in `process'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:70:in `command'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/node.rb:356:in `refresh'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/cluster.rb:101:in `block in refresh'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/cluster.rb:114:in `each'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/cluster.rb:114:in `refresh'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.1.1/lib/moped/cluster.rb:67:in `nodes'
... 15 levels...
    from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.6/lib/active_support/callbacks.rb:405:in `__run_callback'
    from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.6/lib/active_support/callbacks.rb:385:in `_run_save_callbacks'
    from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.6/lib/active_support/callbacks.rb:81:in `run_callbacks'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.1/lib/mongoid/callbacks.rb:98:in `run_callbacks'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.1/lib/mongoid/persistence/insertion.rb:23:in `prepare'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.1/lib/mongoid/persistence/operations/insert.rb:26:in `persist'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.1/lib/mongoid/persistence.rb:50:in `insert'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.1/lib/mongoid/persistence.rb:251:in `block in create!'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.1/lib/mongoid/threaded/lifecycle.rb:173:in `_creating'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.1/lib/mongoid/persistence.rb:249:in `create!'
    from (irb):52
    from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/commands/console.rb:47:in `start'
    from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/commands/console.rb:8:in `start'
    from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.6/lib/rails/commands.rb:41:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'irb(main):053:0> 

Ich glaube, ich habe alles gegoogelt, mehrere Github-Mungo-Probleme durchlaufen, die Dokumentation mehrmals gelesen ... und mir gehen hier die Ideen aus.

Fällt mir etwas ein, das ich als nächstes versuchen sollte?

UPDATE 16. Juli: Dies ist, was Heroku sagt, wenn ich Heroku-Meister schiebe (nachdem ich das getan habe, was Jason vom MongoHQ vorgeschlagen hatte):

git push heroku master
Counting objects: 7, done.
Delta compression using up to 16 threads.
Compressing objects: 100% (4/4), done.
Writing objects: 100% (4/4), 372 bytes, done.
Total 4 (delta 3), reused 0 (delta 0)

-----> Heroku receiving push
-----> Ruby/Rails app detected
-----> Installing dependencies using Bundler version 1.2.0.pre
       Running: bundle install --without development:test --path vendor/bundle --binstubs bin/ --deployment
       Using rake (0.9.2.2)
       Using i18n (0.6.0)
       Using multi_json (1.3.6)
       Using activesupport (3.2.6)
       Using builder (3.0.0)
            # ... shortened this #
       Using libv8 (3.3.10.4)
       Using moped (1.1.2)
       Using origin (1.0.4)
       Using mongoid (3.0.0.rc)
       Using omniauth (1.1.0)
       Using quimby (0.4.5)
       Using bundler (1.2.0.pre)
       Using rails (3.2.6)
       Using therubyracer (0.10.1)
       Using thin (1.3.1)
       Your bundle is complete! It was installed into ./vendor/bundle
       Cleaning up the bundler cache.
-----> Writing config/database.yml to read from DATABASE_URL
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       Asset precompilation completed (31.24s)
-----> Rails plugin injection
       Injecting rails_log_stdout
       Injecting rails3_serve_static_assets
-----> Discovering process types
       Procfile declares types      -> (none)
       Default types for Ruby/Rails -> console, rake, web, worker
-----> Compiled slug size is 18.7MB
-----> Launching... done, v92
       http://xxxxx.herokuapp.com deployed to Heroku

To [email protected]:xxxxx.git
   b2d97xy..7b0aczy  master -> master

UPDATE 2 16. Juli: Hat getan, wie Jason & MrKurt sagten (habe zuerst vergessen, Bundle Update Mongoid auszuführen, aber das hat auch nicht geholfen). Nun hat sich der Fehler jedoch geändert:

NoMethodError in Home#index

Showing /app/app/views/home/index.html.haml where line #2 raised:

undefined method `[]' for nil:NilClass

Extracted source (around line #2):

    1: %h1 Most recent posts
    2: - if @posts.length > 0