ruby-on-rails - 尝试运行 Rails 服务器并遇到有关“适配器”的一些错误
问题描述
有谁知道下面的解决方案是什么？谢谢
我跑rails server
ubuntu:~/environment/oursurplus (master) $ rails server
我得到以下反应/响应：
=> Booting Puma
=> Rails 5.0.7.2 application starting in development on http://localhost:8080
=> Run `rails server -h` for more startup options
Exiting
Traceback (most recent call last):
59: from bin/rails:3:in `<main>'
58: from bin/rails:3:in `load'
57: from /home/ubuntu/environment/oursurplus/bin/spring:13:in `<top (required)>'
56: from /home/ubuntu/environment/oursurplus/bin/spring:13:in `require'
55: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/binstub.rb:11:in `<top (required)>'
54: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/binstub.rb:11:in `load'
53: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/bin/spring:49:in `<top (required)>'
52: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/client.rb:30:in `run'
51: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/client/command.rb:7:in `call'
50: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/client/rails.rb:28:in `call'
49: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/client/rails.rb:28:in `load'
48: from /home/ubuntu/environment/oursurplus/bin/rails:9:in `<top (required)>'
47: from /home/ubuntu/environment/oursurplus/bin/rails:9:in `require'
46: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands.rb:18:in `<top (required)>'
45: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
44: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/commands_tasks.rb:85:in `server'
43: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/commands_tasks.rb:85:in `tap'
42: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/commands_tasks.rb:90:in `block in server'
41: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/server.rb:102:in `start'
40: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/server.rb:148:in `log_to_stdout'
39: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/server.rb:422:in `wrapped_app'
38: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/server.rb:84:in `app'
37: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/server.rb:249:in `app'
36: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/server.rb:349:in `build_app_and_options_from_config'
35: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/builder.rb:66:in `parse_file'
34: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/builder.rb:105:in `load_file'
33: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/builder.rb:116:in `new_from_string'
32: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/builder.rb:116:in `eval'
31: from /home/ubuntu/environment/oursurplus/config.ru:3:in `block in <main>'
30: from /home/ubuntu/environment/oursurplus/config.ru:3:in `require_relative'
29: from /home/ubuntu/environment/oursurplus/config/environment.rb:5:in `<top (required)>'
28: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/application.rb:352:in `initialize!'
27: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/initializable.rb:54:in `run_initializers'
26: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:205:in `tsort_each'
25: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:226:in `tsort_each'
24: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:347:in `each_strongly_connected_component'
23: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:347:in `call'
22: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:347:in `each'
21: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:349:in `block in each_strongly_connected_component'
20: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:431:in `each_strongly_connected_component_from'
19: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
18: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:228:in `block in tsort_each'
17: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/initializable.rb:55:in `block in run_initializers'
16: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/initializable.rb:30:in `run'
15: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/initializable.rb:30:in `instance_exec'
14: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activerecord-5.0.7.2/lib/active_record/railtie.rb:121:in `block in <class:Railtie>'
13: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:40:in `on_load'
12: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:40:in `each'
11: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:41:in `block in on_load'
10: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:65:in `execute_hook'
9: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:60:in `with_execution_control'
8: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:69:in `block in execute_hook'
7: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:69:in `instance_eval'
6: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activerecord-5.0.7.2/lib/active_record/railtie.rb:125:in `block (2 levels) in <class:Railtie>'
5: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activerecord-5.0.7.2/lib/active_record/connection_handling.rb:53:in `establish_connection'
4: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activerecord-5.0.7.2/lib/active_record/connection_adapters/connection_specification.rb:174:in `spec'
3: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/dependencies.rb:293:in `require'
2: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/dependencies.rb:259:in `load_dependency'
1: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/dependencies.rb:293:in `block in require'
/home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/dependencies.rb:293:in `require': cannot load such file -- active_record/connection_adapters/_adapter (LoadError)
59: from bin/rails:3:in `<main>'
58: from bin/rails:3:in `load'
57: from /home/ubuntu/environment/oursurplus/bin/spring:13:in `<top (required)>'
56: from /home/ubuntu/environment/oursurplus/bin/spring:13:in `require'
55: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/binstub.rb:11:in `<top (required)>'
54: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/binstub.rb:11:in `load'
53: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/bin/spring:49:in `<top (required)>'
52: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/client.rb:30:in `run'
51: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/client/command.rb:7:in `call'
50: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/client/rails.rb:28:in `call'
49: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/spring-1.7.2/lib/spring/client/rails.rb:28:in `load'
48: from /home/ubuntu/environment/oursurplus/bin/rails:9:in `<top (required)>'
47: from /home/ubuntu/environment/oursurplus/bin/rails:9:in `require'
46: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands.rb:18:in `<top (required)>'
45: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
44: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/commands_tasks.rb:85:in `server'
43: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/commands_tasks.rb:85:in `tap'
42: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/commands_tasks.rb:90:in `block in server'
41: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/server.rb:102:in `start'
40: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/server.rb:148:in `log_to_stdout'
39: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/server.rb:422:in `wrapped_app'
38: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/commands/server.rb:84:in `app'
37: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/server.rb:249:in `app'
36: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/server.rb:349:in `build_app_and_options_from_config'
35: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/builder.rb:66:in `parse_file'
34: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/builder.rb:105:in `load_file'
33: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/builder.rb:116:in `new_from_string'
32: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/rack-2.2.3/lib/rack/builder.rb:116:in `eval'
31: from /home/ubuntu/environment/oursurplus/config.ru:3:in `block in <main>'
30: from /home/ubuntu/environment/oursurplus/config.ru:3:in `require_relative'
29: from /home/ubuntu/environment/oursurplus/config/environment.rb:5:in `<top (required)>'
28: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/application.rb:352:in `initialize!'
27: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/initializable.rb:54:in `run_initializers'
26: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:205:in `tsort_each'
25: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:226:in `tsort_each'
24: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:347:in `each_strongly_connected_component'
23: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:347:in `call'
22: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:347:in `each'
21: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:349:in `block in each_strongly_connected_component'
20: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:431:in `each_strongly_connected_component_from'
19: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
18: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:228:in `block in tsort_each'
17: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/initializable.rb:55:in `block in run_initializers'
16: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/initializable.rb:30:in `run'
15: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/railties-5.0.7.2/lib/rails/initializable.rb:30:in `instance_exec'
14: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activerecord-5.0.7.2/lib/active_record/railtie.rb:121:in `block in <class:Railtie>'
13: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:40:in `on_load'
12: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:40:in `each'
11: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:41:in `block in on_load'
10: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:65:in `execute_hook'
9: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:60:in `with_execution_control'
8: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:69:in `block in execute_hook'
7: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/lazy_load_hooks.rb:69:in `instance_eval'
6: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activerecord-5.0.7.2/lib/active_record/railtie.rb:125:in `block (2 levels) in <class:Railtie>'
5: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activerecord-5.0.7.2/lib/active_record/connection_handling.rb:53:in `establish_connection'
4: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activerecord-5.0.7.2/lib/active_record/connection_adapters/connection_specification.rb:174:in `spec'
3: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/dependencies.rb:293:in `require'
2: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/dependencies.rb:259:in `load_dependency'
1: from /home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/dependencies.rb:293:in `block in require'
/home/ubuntu/.rvm/gems/ruby-2.6.3/gems/activesupport-5.0.7.2/lib/active_support/dependencies.rb:293:in `require': Could not load 'active_record/connection_adapters/_adapter'.
Make sure that the adapter in config/database.yml is valid.
If you use an adapter other than 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile. (LoadError)
这是我认为没问题的 database.yml 文件。
default: &default
adapter: <%= ENV['DATABASE_ADAPTER'] %>
encoding: <%= ENV['DATABASE_ENCODING'] %>
pool: <%= ENV['DATABASE_POOL'] %>
database: <%= ENV['DATABASE_NAME'] %>
username: <%= ENV['DATABASE_USERNAME'] %>
password: <%= ENV['DATABASE_PASSWORD'] %>
host: <%= ENV['DATABASE_HOST'] %>
development:
adapter: sqlite3
database: db/development.sqlite3
pool: 5
timeout: 5000
<<: *default
database: oursurplus_development
# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
<<: *default
database: oursurplus_test
adapter: sqlite3
database: db/test.sqlite3
pool: 5
timeout: 5000
production:
<<: *default
adapter: sqlite3
database: db/production.sqlite3
pool: 5
timeout: 5000
当我尝试运行时，rails db:migrate我得到以下相同的错误
ubuntu:~/environment/oursurplus (master) $ rails db:migrate
rails aborted!
LoadError: Could not load 'active_record/connection_adapters/_adapter'.
Make sure that the adapter in config/database.yml is valid.
If you use an adapter other than 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile.
解决方案
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