7
तो मैं रेल के लिए वास्तव में नया हूं, और मुझे एक अजीब त्रुटि मिल रही है जिसे मैं समझ नहीं पा रहा हूं। मैंने एक इवेंट मॉडल बनाया और मैं इसे अपने डेटाबेस में माइग्रेट करना चाहता हूं।रेल डीबी: निरस्त करना माइग्रेट करें ... सुनिश्चित नहीं है कि इसे क्यों ठीक किया जाए या कैसे
05:55 PM movienights: bundle exec rake db:migrate --trace
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Invoke db:load_config (first_time)
** Invoke rails_env (first_time)
** Execute rails_env
** Execute db:load_config
** Execute db:migrate
== CreateEvents: migrating ===================================================
-- create_table(:events)
rake aborted!
An error has occurred, all later migrations canceled:
undefined method `name' for #<ActiveRecord::ConnectionAdapters::TableDefinition:0x007ffa75a27660>
Documents/Homework/College/2011-2012/Rails/RailsApps/movienights/db/migrate/20120331213639_create_events.rb:4:in `block in change'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/schema_statements.rb:160:in `create_table'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:432:in `create_table'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:450:in `block in method_missing'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:424:in `block in say_with_time'
.rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/benchmark.rb:295:in `measure'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:424:in `say_with_time'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:444:in `method_missing'
Documents/Homework/College/2011-2012/Rails/RailsApps/movienights/db/migrate/20120331213639_create_events.rb:3:in `change'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:393:in `block (2 levels) in migrate'
.rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/benchmark.rb:295:in `measure'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:393:in `block in migrate'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:118:in `with_connection'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:377:in `migrate'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:512:in `migrate'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:704:in `block (2 levels) in migrate'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:761:in `call'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:761:in `ddl_transaction'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:703:in `block in migrate'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:684:in `each'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:684:in `migrate'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:554:in `up'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/migration.rb:535:in `migrate'
.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.2/lib/active_record/railties/databases.rake:153:in `block (2 levels) in <top (required)>'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
.rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
.rvm/gems/ruby-1.9.2-p318/bin/rake:19:in `load'
.rvm/gems/ruby-1.9.2-p318/bin/rake:19:in `<main>'
Tasks: TOP => db:migrate
जब मैं bundle exec rake चलाने के लिए, मैं:
You have 1 pending migrations:
20120331213639 CreateEvents
Run `rake db:migrate` to update your database then try again.
मेरी बनाएं घटनाओं प्रवास है:
class CreateEvents < ActiveRecord::Migration
def change
create_table :events do |t|
t.name :string
t.date :datetime
t.location :string
t.timestamps
end
end
end
हालांकि, मैं हालांकि, जब मैं bundle exec rake db:migrate --trace चलाने इस मैं क्या मिलता है rails destroy scaffold Event का उपयोग करके इवेंट मॉडल को हटा दिया और इसे फिर से अलग-अलग गुणों के साथ बनाया। क्या यह समस्या का हिस्सा हो सकता है?
कोई भी मदद या सुझावों की बहुत सराहना की जाती है!
क्या हम ईवेंट इवेंट माइग्रेशन देख सकते हैं? – Spyros