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POtrouble with rake db:migrate
 

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  1. POtrouble with rake db:migrate
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    <p>Hi every one i'm new on ruby on rails so i got this problem with rake db:migrate So i use --trace up on it to understand but i didn't get a clue of what to do . i put my migrate .rb file below.</p> <pre><code> $ rake db:migrate --trace ** Invoke db:migrate (first_time) ** Invoke environment (first_time) ** Execute environment ** Invoke db:load_config (first_time) ** Execute db:load_config ** Execute db:migrate == AlterUsers: migrating ===================================================== -- rename_table("users", "admin_users") rake aborted! An error has occurred, all later migrations canceled: Mysql2::Error: Table 'admin_users' already exists: RENAME TABLE `users` TO `admin_users` /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:245:in `query' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:245:in `execute' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/connection_adapters/abstract_adapter.rb:280:in `log' /Library/Ruby/Gems/1.8/gems/activesupport-3.2.8/lib/active_support/notifications/instrumenter.rb:20:in `instrument' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/connection_adapters/abstract_adapter.rb:275:in `log' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:245:in `execute' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/connection_adapters/mysql2_adapter.rb:211:in `execute' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:457:in `rename_table' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:466:in `send' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:466:in `method_missing' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:438:in `say_with_time' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/benchmark.rb:293:in `measure' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:438:in `say_with_time' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:458:in `method_missing' /Users/seydoukonate/Sites/simple_cms/db/migrate/20121015072622_alter_users.rb:3:in `up' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:410:in `send' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:410:in `migrate' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/benchmark.rb:293:in `measure' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:410:in `migrate' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:123:in `with_connection' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:389:in `migrate' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:528:in `__send__' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:528:in `migrate' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:720:in `migrate' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:777:in `call' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:777:in `ddl_transaction' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:719:in `migrate' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:700:in `each' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:700:in `migrate' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:570:in `up' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/migration.rb:551:in `migrate' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.8/lib/active_record/railties/databases.rake:153 /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `execute' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `invoke_with_call_chain' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `top_level' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `top_level' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `run' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run' /Library/Ruby/Gems/1.8/gems/rake-0.9.2.2/bin/rake:33 /usr/bin/rake:23:in `load' /usr/bin/rake:23 Tasks: TOP =&gt; db:migrate </code></pre> <p>Here is whats inside my _create_user.rb file.</p> <pre><code>class CreateUsers &lt; ActiveRecord::Migration def change create_table :users do |t| t.string "first_name", :limit =&gt; 25 t.string "last_name", :limit =&gt; 50 t.string "email", :default =&gt; "", :null =&gt; false t.string "password", :limit =&gt; 40 t.timestamps end end def self.down drop_table :users end end </code></pre> <p>and here is what is inside alter_user.rb file</p> <pre><code>class AlterUsers &lt; ActiveRecord::Migration def up rename_table("users", "admin_users") add_column("admin_users", "username", :string, :limit =&gt; 25) change_column("admin_users", "email", :string, :limit =&gt; 100) rename_column("admin_users", "password", "hashed_password") add_column("admin_users", "salt", :string, :limit =&gt; 40) puts "*** About to add and index ***" add_index("admin_users", "username") end def down remove_index("admin_users", "username") remove_column("admin_users", "salt") rename_column("admin_users", "hashed_apssword", "password") change_column("admin_users", "email", :string, :default =&gt; "", :null =&gt; false) remove_column("admin_users", "username") rename_table("admin_users", "users") end end </code></pre>
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