Rails g scaffold用户电子邮件无法正常工作.On Linux

如果被困在这里，我很善良 . 调用active_record /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/application/configuration.rb:110:in database_configuration': Cannot load Rails . application.database_configuration : (RuntimeError) Could not load database configuration. No such file - ["config/database.yml"] from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/railtie.rb:117:in block（2个级别）来自/home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks . rb：38： instance_eval' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:38:in execute_hook'来自/home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:45 ：in block in run_load_hooks' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:44:in each'from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:44:in run_load_hooks' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/base.rb:315:in 'from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/base.rb:26:in <top (required)>' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/generators/named_base.rb:179:in pluralize_table_names？'来自/home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/generators/named_base.rb:119:in table_name' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activerecord-4.2.5.1/lib/rails/generators/active_record/model/model_generator.rb:21:in create_migration_file'来自/home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/command.rb:27:in run' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/invocation.rb:126:in invoke_command'from / home / frank / .rbenv / versions / 2.2.4 / lib / ruby / gems / 2.2.0 / gems / thor-0.19.1 / lib / thor / invocation.rb:133:in block in invoke_all' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/invocation.rb:133:in each'from / home / frank / . rbenv / versions / 2.2.4 / lib / ruby / gems / 2.2.0 / gems / thor-0.19.1 / lib / thor / invocation.rb：133：in map' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/invocation.rb:133:in invoke_all'from /home/frank/.rbenv/versions /2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/group.rb:232:in dispatch' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/invocation.rb:115:in 从/home/frank/.rbenv/versions/2.2调用' . 4 / lib / ruby / gems / 2.2.0 / gems / thor-0.19.1 / lib / thor / group.rb：277：in block in _invoke_for_class_method' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/shell.rb:68:in with_padding'from /home/frank/.rbenv/versions/2.2.4/lib /ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/group.rb:266:in _invoke_for_class_method' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/group.rb:133:in _invoke_from_option_orm'来自/home/frank/.rbenv/versions/2.2.4/lib/ruby/宝石/ 2.2.0 /宝石/托尔-0.19.1 / lib中/thor/command.rb:27:in run' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/invocation.rb:126:in invoke_command'来自/home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/ invocation.rb：133：in block in invoke_all' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/invocation.rb:133:in each'from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/invocation.rb ：133：in map' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/invocation.rb:133:in invoke_all'from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/group.rb:232: in dispatch' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/thor-0.19.1/lib/thor/base.rb:440:in start'from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/generators.rb:157:in invoke' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/commands/generate.rb:13:in '来自/home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in require' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in block in require'from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in load_dependency' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in require'from / home / frank / .rbenv / versions / 2.2.4 / lib / ruby / gems / 2.2.0 / gems / railties-4.2.5.1 / lib / rails / commands / commands_tasks.rb:123:in require_command!' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:130:in generate_or_d estroy'from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:50:in generate' from /home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:39:in run_command ！来自/home/frank/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/commands.rb:17:in <top (required)>' from bin/rails:4:in require ' from bin/rails:4:in `'