Progetto Mongodb / mongoid rails - "non ha trovato la chiave prevista durante l'analisi di una mappatura di blocchi alla riga 8 colonna 7 (Psych :: SyntaxError)" - ruby-on-rails, ruby, mongodb, mongoid

Ho un progetto di rotaie che usa mongodb / mongoid e alcune gemme mongodb / mongoid aggiuntive:

ruby "2.3.1"
gem "rails", "4.1.1"
gem "mongoid"

Quando cerco di eseguirlo, ottengo un'eccezione:

$ bundle exec rails s
/home/alex/.gem/ruby/2.3.1/gems/activesupport-4.1.1/lib/active_support/values/time_zone.rb:285: warning: circular argument reference - now
=> Booting Thin
=> Rails 4.1.1 application starting in development on http://0.0.0.0:3000
=> Run `rails server -h` for more startup options
=> Notice: server is listening on all interfaces (0.0.0.0). Consider using 127.0.0.1 (--binding option)
=> Ctrl-C to shutdown server
Exiting
/home/alex/.rubies/ruby-2.3.1/lib/ruby/2.3.0/psych.rb:377:in `parse": (<unknown>): did not find expected key while parsing a block mapping at line 8 column 7 (Psych::SyntaxError)
from /home/alex/.rubies/ruby-2.3.1/lib/ruby/2.3.0/psych.rb:377:in `parse_stream"
from /home/alex/.gem/ruby/2.3.1/gems/mongoid-4.0.2/lib/mongoid/config/environment.rb:40:in `load_yaml"
from /home/alex/.gem/ruby/2.3.1/gems/mongoid-4.0.2/lib/mongoid/config.rb:83:in `load!"
# ............skipped
from /home/alex/.gem/ruby/2.3.1/gems/railties-4.1.1/lib/rails/initializable.rb:55:in `block in run_initializers"
from /home/alex/.rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:228:in `block in tsort_each"
from /home/alex/.rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component"
from /home/alex/.rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:431:in `each_strongly_connected_component_from"
from /home/alex/.rubies/ruby-2.3.1/lib/ruby/2.3.0/tsort.rb:349:in `block in each_strongly_connected_component"
# .......... skipped
from /home/alex/.gem/ruby/2.3.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:232:in `load_dependency"
from /home/alex/.gem/ruby/2.3.1/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:247:in `require"
from /home/alex/projects/ruby/my_project_123/config.ru:3:in `block in <main>"
from /home/alex/.gem/ruby/2.3.1/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval"
# ............skipped
from /home/alex/.gem/ruby/2.3.1/gems/railties-4.1.1/lib/rails/commands.rb:17:in `<top (required)>"
from bin/rails:4:in `require"
from bin/rails:4:in `<main>"

Cosa può causare questa eccezione?

risposte:

Psych è un parser ed emettitore YAML. L'errore indica da qualche parte nei file yml che hai spazi aggiuntivi (o non abbastanza spazi) prima di un valore chiave. Controlla tutti i file yml (Es: mongoid.yml ) per la sintassi corretta. Puoi convalidare i tuoi file yml Qui. Ad esempio nel seguente YAML

key_one:
inner:
- value1
- value2

key_two:
inner:
- value1
- value2

riga 7 colonna 5 ha uno spazio extra prima di un valore chiave