1 caopu@caopu-ThinkPad-X1:~/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 caopu@caopu-ThinkPad-X1:~/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 caopu@caopu-ThinkPad-X1:~/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 caopu@caopu-ThinkPad-X1:~/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>