Metodo non definito per l'implementazione di Friendly_id

Question

Ecco come appare il mio piano.rb:

class Plan < ActiveRecord::Base

  has_many :users
  has_friendly_id :plan, :use_slug => true

end

Utente.rb

class User < ActiveRecord::Base

#There is other stuff in here, but I stripped it out for brevity purposes.

  has_and_belongs_to_many :projects
  has_many :stages
  has_many :uploads
  has_many :comments
  has_many :assignments
  has_many :roles, :through => :assignments
  belongs_to :plan


end

Questo è il messaggio di errore che sto ricevendo:

'ruby-1.9.2-p0 > Plan.create(:name => "First_Test", :storage => "100")
NoMethodError: undefined method `plan' for #<Plan:0x00000102b8a2d8>
    /gemms/ruby-1.9.2-p0/gems/activemodel-3.0.3/lib/active_model/attribute_methods.rb:364:in `method_missing'
    /gemms/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/attribute_methods.rb:46:in `method_missing'
    /gems/ruby-1.9.2-p0/gems/friendly_id-3.2.0/lib/friendly_id/slugged.rb:82:in `slug_text'
    /gems/ruby-1.9.2-p0/gems/friendly_id-3.2.0/lib/friendly_id/active_record_adapter/slugged_model.rb:49:in `build_a_slug'
    /gems/ruby-1.9.2-p0/gems/activesupport-3.0.3/lib/active_support/callbacks.rb:419:in `_run_save_callbacks'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/callbacks.rb:277:in `create_or_update'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/persistence.rb:39:in `save'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/validations.rb:43:in `save'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/attribute_methods/dirty.rb:21:in `save'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/transactions.rb:237:in `block (2 levels) in save'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/transactions.rb:289:in `block in with_transaction_returning_status'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/connection_adapters/abstract/database_statements.rb:139:in `transaction'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/transactions.rb:204:in `transaction'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/transactions.rb:287:in `with_transaction_returning_status'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/transactions.rb:237:in `block in save'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/transactions.rb:248:in `rollback_active_record_state!'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/transactions.rb:236:in `save'
    /gems/ruby-1.9.2-p0/gems/activerecord-3.0.3/lib/active_record/base.rb:498:in `create'
    from (irb):3
    /gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/commands/console.rb:44:in `start'
    /gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/commands/console.rb:8:in `start'
    /gems/ruby-1.9.2-p0/gems/railties-3.0.3/lib/rails/commands.rb:23:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

Non sono sicuro di cosa sto sbagliando qui, ma non posso creare nuovi "piani".

Answer 1

Sembra che il tuo database non abbia un plan colonna nel tuo plans tavolo. Oltre ad aggiungere il file has_friendly_id dichiarazione al tuo modello, hai creato ed eseguito una migrazione per aggiungere il plan campo al tuo database?

Answer 2

Puoi anche ottenere questo errore (metodo non definito `has_friendly_id ') se hai aggiornato Friendly_id dalla versione 3 a 4.

Comando 'Has_friendly_id' è stato sostituito da 'Friendly_id' - Vedi come aggiornare qui:

http://rubydoc.info/github/norman/friendly_id/master/file/whatsnew.md

Nota: dovrai anche creare una migrazione per aggiungere una nuova colonna di lumaca alla tua tabella.