ruby on rails 會話系統
Posted
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了ruby on rails 會話系統相关的知识，希望对你有一定的参考价值。
1 [email protected]:~/demo$ rake db:migrate 2 == 20170329075038 CreateUsers: migrating ====================================== 3 -- create_table(:users) 4 rake aborted! 5 StandardError: An error has occurred, all later migrations canceled: 6 7 undefined method `varchar‘ for #<ActiveRecord::ConnectionAdapters::mysql::TableDefinition:0x005575be9f04f0> 8 /home/caopu/demo/db/migrate/20170329075038_create_users.rb:5:in `block in change‘ 9 /home/caopu/demo/db/migrate/20170329075038_create_users.rb:3:in `change‘ 10 NoMethodError: undefined method `varchar‘ for #<ActiveRecord::ConnectionAdapters::MySQL::TableDefinition:0x005575be9f04f0> 11 /home/caopu/demo/db/migrate/20170329075038_create_users.rb:5:in `block in change‘ 12 /home/caopu/demo/db/migrate/20170329075038_create_users.rb:3:in `change‘ 13 Tasks: TOP => db:migrate 14 (See full trace by running task with --trace) 15 [email protected]:~/demo$ rake db:migrate --trace 16 ** Invoke db:migrate (first_time) 17 ** Invoke environment (first_time) 18 ** Execute environment 19 ** Invoke db:load_config (first_time) 20 ** Execute db:load_config 21 ** Execute db:migrate 22 == 20170329075038 CreateUsers: migrating ====================================== 23 -- create_table(:users) 24 rake aborted! 25 StandardError: An error has occurred, all later migrations canceled: 26 27 undefined method `varchar‘ for #<ActiveRecord::ConnectionAdapters::MySQL::TableDefinition:0x0055a9ab79da38> 28 /home/caopu/demo/db/migrate/20170329075038_create_users.rb:5:in `block in change‘ 29 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/connection_adapters/abstract/schema_statements.rb:272:in `create_table‘ 30 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:423:in `create_table‘ 31 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:846:in `block in method_missing‘ 32 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:815:in `block in say_with_time‘ 33 /usr/local/lib/ruby/2.2.0/benchmark.rb:288:in `measure‘ 34 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:815:in `say_with_time‘ 35 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:835:in `method_missing‘ 36 /home/caopu/demo/db/migrate/20170329075038_create_users.rb:3:in `change‘ 37 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:789:in `exec_migration‘ 38 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:773:in `block (2 levels) in migrate‘ 39 /usr/local/lib/ruby/2.2.0/benchmark.rb:288:in `measure‘ 40 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:772:in `block in migrate‘ 41 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:398:in `with_connection‘ 42 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:771:in `migrate‘ 43 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:951:in `migrate‘ 44 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1214:in `block in execute_migration_in_transaction‘ 45 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1284:in `ddl_transaction‘ 46 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1213:in `execute_migration_in_transaction‘ 47 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1185:in `block in migrate_without_lock‘ 48 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1184:in `each‘ 49 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1184:in `migrate_without_lock‘ 50 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1132:in `block in migrate‘ 51 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1301:in `with_advisory_lock‘ 52 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1132:in `migrate‘ 53 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1006:in `up‘ 54 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:984:in `migrate‘ 55 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/tasks/database_tasks.rb:161:in `migrate‘ 56 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/railties/databases.rake:58:in `block (2 levels) in <top (required)>‘ 57 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `call‘ 58 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `block in execute‘ 59 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `each‘ 60 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `execute‘ 61 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:194:in `block in invoke_with_call_chain‘ 62 /usr/local/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize‘ 63 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:187:in `invoke_with_call_chain‘ 64 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:180:in `invoke‘ 65 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:152:in `invoke_task‘ 66 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block (2 levels) in top_level‘ 67 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `each‘ 68 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block in top_level‘ 69 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:117:in `run_with_threads‘ 70 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:102:in `top_level‘ 71 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:80:in `block in run‘ 72 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:178:in `standard_exception_handling‘ 73 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:77:in `run‘ 74 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/exe/rake:27:in `<top (required)>‘ 75 /usr/local/bin/rake:23:in `load‘ 76 /usr/local/bin/rake:23:in `<main>‘ 77 NoMethodError: undefined method `varchar‘ for #<ActiveRecord::ConnectionAdapters::MySQL::TableDefinition:0x0055a9ab79da38> 78 /home/caopu/demo/db/migrate/20170329075038_create_users.rb:5:in `block in change‘ 79 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/connection_adapters/abstract/schema_statements.rb:272:in `create_table‘ 80 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:423:in `create_table‘ 81 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:846:in `block in method_missing‘ 82 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:815:in `block in say_with_time‘ 83 /usr/local/lib/ruby/2.2.0/benchmark.rb:288:in `measure‘ 84 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:815:in `say_with_time‘ 85 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:835:in `method_missing‘ 86 /home/caopu/demo/db/migrate/20170329075038_create_users.rb:3:in `change‘ 87 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:789:in `exec_migration‘ 88 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:773:in `block (2 levels) in migrate‘ 89 /usr/local/lib/ruby/2.2.0/benchmark.rb:288:in `measure‘ 90 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:772:in `block in migrate‘ 91 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:398:in `with_connection‘ 92 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:771:in `migrate‘ 93 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:951:in `migrate‘ 94 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1214:in `block in execute_migration_in_transaction‘ 95 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1284:in `ddl_transaction‘ 96 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1213:in `execute_migration_in_transaction‘ 97 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1185:in `block in migrate_without_lock‘ 98 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1184:in `each‘ 99 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1184:in `migrate_without_lock‘ 100 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1132:in `block in migrate‘ 101 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1301:in `with_advisory_lock‘ 102 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1132:in `migrate‘ 103 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:1006:in `up‘ 104 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/migration.rb:984:in `migrate‘ 105 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/tasks/database_tasks.rb:161:in `migrate‘ 106 /usr/local/lib/ruby/gems/2.2.0/gems/activerecord-5.0.2/lib/active_record/railties/databases.rake:58:in `block (2 levels) in <top (required)>‘ 107 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `call‘ 108 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `block in execute‘ 109 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `each‘ 110 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `execute‘ 111 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:194:in `block in invoke_with_call_chain‘ 112 /usr/local/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize‘ 113 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:187:in `invoke_with_call_chain‘ 114 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/task.rb:180:in `invoke‘ 115 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:152:in `invoke_task‘ 116 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block (2 levels) in top_level‘ 117 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `each‘ 118 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block in top_level‘ 119 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:117:in `run_with_threads‘ 120 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:102:in `top_level‘ 121 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:80:in `block in run‘ 122 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:178:in `standard_exception_handling‘ 123 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/lib/rake/application.rb:77:in `run‘ 124 /usr/local/lib/ruby/gems/2.2.0/gems/rake-12.0.0/exe/rake:27:in `<top (required)>‘ 125 /usr/local/bin/rake:23:in `load‘ 126 /usr/local/bin/rake:23:in `<main>‘ 127 Tasks: TOP => db:migrate 128 [email protected]:~/demo$ rake db:migrate --trace 129 ** Invoke db:migrate (first_time) 130 ** Invoke environment (first_time) 131 ** Execute environment 132 ** Invoke db:load_config (first_time) 133 ** Execute db:load_config 134 ** Execute db:migrate 135 == 20170329075038 CreateUsers: migrating ====================================== 136 -- create_table(:users) 137 -> 0.2420s 138 == 20170329075038 CreateUsers: migrated (0.2423s) ============================= 139 140 ** Invoke db:_dump (first_time) 141 ** Execute db:_dump 142 ** Invoke db:schema:dump (first_time) 143 ** Invoke environment 144 ** Invoke db:load_config 145 ** Execute db:schema:dump 146 [email protected]:~/demo$ rails c 147 Running via Spring preloader in process 29556 148 Loading development environment (Rails 5.0.2) 149 irb(main):001:0> a=User.new 150 => #<User id: nil, name: nil, password: nil, created_at: nil, updated_at: nil> 151 irb(main):002:0> a.name="admin" 152 => "admin" 153 irb(main):003:0> a.password = 154 irb(main):004:0* 155 irb(main):005:0* a.password = 156 irb(main):006:0* a.password ="" 157 => "" 158 irb(main):007:0> a.password ="123456" 159 => "123456" 160 irb(main):008:0> a.save 161 (0.4ms) BEGIN 162 SQL (0.7ms) INSERT INTO `users` (`name`, `password`, `created_at`, `updated_at`) VALUES (‘admin‘, ‘123456‘, ‘2017-03-29 10:33:54‘, ‘2017-03-29 10:33:54‘) 163 (53.8ms) COMMIT 164 => true 165 irb(main):009:0> a 166 => #<User id: 1, name: "admin", password: "123456", created_at: "2017-03-29 10:33:54", updated_at: "2017-03-29 10:33:54"> 167 irb(main):010:0> User.where({:name=>}) 168 SyntaxError: (irb):10: syntax error, unexpected ‘}‘ 169 User.where({:name=>}) 170 ^ 171 from /usr/local/lib/ruby/gems/2.2.0/gems/railties-5.0.2/lib/rails/commands/console.rb:65:in `start‘ 172 from /usr/local/lib/ruby/gems/2.2.0/gems/railties-5.0.2/lib/rails/commands/console_helper.rb:9:in `start‘ 173 from /usr/local/lib/ruby/gems/2.2.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:78:in `console‘ 174 from /usr/local/lib/ruby/gems/2.2.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:49:in `run_command!‘ 175 from /usr/local/lib/ruby/gems/2.2.0/gems/railties-5.0.2/lib/rails/commands.rb:18:in `<top (required)>‘ 176 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `require‘ 177 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `block in require‘ 178 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:259:in `load_dependency‘ 179 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `require‘ 180 from /home/caopu/demo/bin/rails:9:in `<top (required)>‘ 181 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:287:in `load‘ 182 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:287:in `block in load‘ 183 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:259:in `load_dependency‘ 184 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:287:in `load‘ 185 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/commands/rails.rb:6:in `call‘ 186 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/command_wrapper.rb:38:in `call‘ 187 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:191:in `block in serve‘ 188 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:161:in `fork‘ 189 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:161:in `serve‘ 190 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:131:in `block in run‘ 191 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:125:in `loop‘ 192 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:125:in `run‘ 193 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application/boot.rb:19:in `<top (required)>‘ 194 from /usr/local/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:55:in `require‘ 195 from /usr/local/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:55:in `require‘ 196 from -e:1:in `<main>‘ 197 irb(main):011:0> 198 irb(main):012:0* User.where({:name=>"admin",:password=>}) 199 "SyntaxError: (irb):12: syntax error, unexpected ‘}‘ 200 User.where({:name=>"admin",:password=>}) 201 ^ 202 from /usr/local/lib/ruby/gems/2.2.0/gems/railties-5.0.2/lib/rails/commands/console.rb:65:in `start‘ 203 from /usr/local/lib/ruby/gems/2.2.0/gems/railties-5.0.2/lib/rails/commands/console_helper.rb:9:in `start‘ 204 from /usr/local/lib/ruby/gems/2.2.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:78:in `console‘ 205 from /usr/local/lib/ruby/gems/2.2.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:49:in `run_command!‘ 206 from /usr/local/lib/ruby/gems/2.2.0/gems/railties-5.0.2/lib/rails/commands.rb:18:in `<top (required)>‘ 207 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `require‘ 208 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `block in require‘ 209 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:259:in `load_dependency‘ 210 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `require‘ 211 from /home/caopu/demo/bin/rails:9:in `<top (required)>‘ 212 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:287:in `load‘ 213 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:287:in `block in load‘ 214 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:259:in `load_dependency‘ 215 from /usr/local/lib/ruby/gems/2.2.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:287:in `load‘ 216 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/commands/rails.rb:6:in `call‘ 217 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/command_wrapper.rb:38:in `call‘ 218 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:191:in `block in serve‘ 219 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:161:in `fork‘ 220 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:161:in `serve‘ 221 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:131:in `block in run‘ 222 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:125:in `loop‘ 223 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application.rb:125:in `run‘ 224 from /usr/local/lib/ruby/gems/2.2.0/gems/spring-2.0.1/lib/spring/application/boot.rb:19:in `<top (required)>‘ 225 from /usr/local/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:55:in `require‘ 226 from /usr/local/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:55:in `require‘ 227 from -e:1:in `<main>‘ 228 irb(main):013:0> User.where({:name=>"admin",:password=>"123456"}).first 229 User Load (1.2ms) SELECT `users`.* FROM `users` WHERE `users`.`name` = ‘admin‘ AND `users`.`password` = ‘123456‘ ORDER BY `users`.`id` ASC LIMIT 1 230 => #<User id: 1, name: "admin", password: "123456", created_at: "2017-03-29 10:33:54", updated_at: "2017-03-29 10:33:54"> 231 irb(main):014:0> User.where({:name=>"admin",:password=>"123456"}).first 232 User Load (0.8ms) SELECT `users`.* FROM `users` WHERE `users`.`name` = ‘admin‘ AND `users`.`password` = ‘123456‘ ORDER BY `users`.`id` ASC LIMIT 1 233 => #<User id: 1, name: "admin", password: "123456", created_at: "2017-03-29 10:33:54", updated_at: "2017-03-29 10:33:54"> 234 irb(main):015:0> User.where({:name=>"admin",:password=>"1234561"}).first 235 User Load (0.8ms) SELECT `users`.* FROM `users` WHERE `users`.`name` = ‘admin‘ AND `users`.`password` = ‘1234561‘ ORDER BY `users`.`id` ASC LIMIT 1 236 => nil 237 irb(main):016:0> User.where({:name=>"admin",:password=>"123456"}).first 238 User Load (0.7ms) SELECT `users`.* FROM `users` WHERE `users`.`name` = ‘admin‘ AND `users`.`password` = ‘123456‘ ORDER BY `users`.`id` ASC LIMIT 1 239 => #<User id: 1, name: "admin", password: "123456", created_at: "2017-03-29 10:33:54", updated_at: "2017-03-29 10:33:54"> 240 irb(main):017:0>
以上是关于ruby on rails 會話系統的主要内容，如果未能解决你的问题，请参考以下文章
ruby Ruby on Rails + GitHub + CircleCI 2.0的典型代码设置
第一个CRUD的制作方法（Ruby on Rails 開發秘籍 | Ruby on Rails 快速入門）
如何注销 Facebook - 在 Rails 应用程序中使用代码（Ruby on Rails Omniauth）