我无法在Windows 6的Rail 7中创建表(即成功运行db：migration(。
以防万一我通过安装 Ruby 2.6 开发包并执行"gem 安装轨道"完全重新安装了 rails，这对我来说安装了 Rails 6.0.3.1
我创建了一个新项目，做的第一件事是生成一个"客户"模型，之后我在失败后立即运行 db：migrate 命令，说"给出了错误的参数数量"。见下文。
C:Appsrails>cd cmdb
C:Appsrailscmdb>rails generate model Customer string:name
invoke active_record
create db/migrate/20200525080817_create_customers.rb
create app/models/customer.rb
invoke test_unit
create test/models/customer_test.rb
create test/fixtures/customers.yml
C:Appsrailscmdb>rails db:migrate
== 20200525080817 CreateCustomers: migrating ==================================
-- create_table(:customers)
rails aborted!
StandardError: An error has occurred, this and all later migrations canceled:
wrong number of arguments (given 1, expected 0)
C:/Apps/rails/cmdb/db/migrate/20200525080817_create_customers.rb:4:in `block in change'
C:/Apps/rails/cmdb/db/migrate/20200525080817_create_customers.rb:3:in `change'
bin/rails:4:in `require'
bin/rails:4:in `<main>'
Caused by:
ArgumentError: wrong number of arguments (given 1, expected 0)
C:/Apps/rails/cmdb/db/migrate/20200525080817_create_customers.rb:4:in `block in change'
C:/Apps/rails/cmdb/db/migrate/20200525080817_create_customers.rb:3:in `change'
bin/rails:4:in `require'
bin/rails:4:in `<main>'
Tasks: TOP => db:migrate
(See full trace by running task with --trace)
The migration.rb was generated and is shown below:-
class CreateCustomers < ActiveRecord::Migration[6.0]
def change
create_table :customers do |t|
t.name :string
t.timestamps
end
end
end
带有完整跟踪的重新运行粘贴如下：-
C:Appsrailscmdb>rails db:migrate --trace
** Invoke db:migrate (first_time)
** Invoke db:load_config (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:load_config
** Execute db:migrate
== 20200525080817 CreateCustomers: migrating ==================================
-- create_table(:customers)
rails aborted!
StandardError: An error has occurred, this and all later migrations canceled:
wrong number of arguments (given 1, expected 0)
C:/Apps/rails/cmdb/db/migrate/20200525080817_create_customers.rb:4:in `block in change'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/schema_statements.rb:309:in `create_table'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:890:in `block in method_missing'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:858:in `block in say_with_time'
C:/Ruby26-x64/lib/ruby/2.6.0/benchmark.rb:293:in `measure'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:858:in `say_with_time'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:879:in `method_missing'
C:/Apps/rails/cmdb/db/migrate/20200525080817_create_customers.rb:3:in `change'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:828:in `exec_migration'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:812:in `block (2 levels) in migrate'
C:/Ruby26-x64/lib/ruby/2.6.0/benchmark.rb:293:in `measure'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:811:in `block in migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:471:in `with_connection'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:810:in `migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1002:in `migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1310:in `block in execute_migration_in_transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1361:in `block in ddl_transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/database_statements.rb:280:in `block in tra
nsaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/transaction.rb:280:in `block in within_new_
transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3.1/lib/active_support/concurrency/load_interlock_aware_monitor.rb:26:in `block (2 levels) in
synchronize'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3.1/lib/active_support/concurrency/load_interlock_aware_monitor.rb:25:in `handle_interrupt'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3.1/lib/active_support/concurrency/load_interlock_aware_monitor.rb:25:in `block in synchroniz
e'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3.1/lib/active_support/concurrency/load_interlock_aware_monitor.rb:21:in `handle_interrupt'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3.1/lib/active_support/concurrency/load_interlock_aware_monitor.rb:21:in `synchronize'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/transaction.rb:278:in `within_new_transacti
on'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/database_statements.rb:280:in `transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/transactions.rb:212:in `transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1361:in `ddl_transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1309:in `execute_migration_in_transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1281:in `block in migrate_without_lock'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1280:in `each'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1280:in `migrate_without_lock'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1231:in `migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1061:in `up'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1036:in `migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/tasks/database_tasks.rb:238:in `migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/railties/databases.rake:86:in `block (3 levels) in <top (required)>'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/railties/databases.rake:84:in `each'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/railties/databases.rake:84:in `block (2 levels) in <top (required)>'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:281:in `block in execute'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:281:in `each'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:281:in `execute'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:219:in `block in invoke_with_call_chain'
C:/Ruby26-x64/lib/ruby/2.6.0/monitor.rb:235:in `mon_synchronize'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:199:in `invoke_with_call_chain'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:188:in `invoke'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:160:in `invoke_task'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:116:in `block (2 levels) in top_level'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:116:in `each'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:116:in `block in top_level'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:125:in `run_with_threads'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:110:in `top_level'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/railties-6.0.3.1/lib/rails/commands/rake/rake_command.rb:23:in `block in perform'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:186:in `standard_exception_handling'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/railties-6.0.3.1/lib/rails/commands/rake/rake_command.rb:20:in `perform'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/railties-6.0.3.1/lib/rails/command.rb:48:in `invoke'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/railties-6.0.3.1/lib/rails/commands.rb:18:in `<top (required)>'
bin/rails:4:in `require'
bin/rails:4:in `<main>'
Caused by:
ArgumentError: wrong number of arguments (given 1, expected 0)
C:/Apps/rails/cmdb/db/migrate/20200525080817_create_customers.rb:4:in `block in change'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/schema_statements.rb:309:in `create_table'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:890:in `block in method_missing'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:858:in `block in say_with_time'
C:/Ruby26-x64/lib/ruby/2.6.0/benchmark.rb:293:in `measure'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:858:in `say_with_time'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:879:in `method_missing'
C:/Apps/rails/cmdb/db/migrate/20200525080817_create_customers.rb:3:in `change'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:828:in `exec_migration'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:812:in `block (2 levels) in migrate'
C:/Ruby26-x64/lib/ruby/2.6.0/benchmark.rb:293:in `measure'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:811:in `block in migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:471:in `with_connection'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:810:in `migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1002:in `migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1310:in `block in execute_migration_in_transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1361:in `block in ddl_transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/database_statements.rb:280:in `block in tra
nsaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/transaction.rb:280:in `block in within_new_
transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3.1/lib/active_support/concurrency/load_interlock_aware_monitor.rb:26:in `block (2 levels) in
synchronize'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3.1/lib/active_support/concurrency/load_interlock_aware_monitor.rb:25:in `handle_interrupt'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3.1/lib/active_support/concurrency/load_interlock_aware_monitor.rb:25:in `block in synchroniz
e'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3.1/lib/active_support/concurrency/load_interlock_aware_monitor.rb:21:in `handle_interrupt'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activesupport-6.0.3.1/lib/active_support/concurrency/load_interlock_aware_monitor.rb:21:in `synchronize'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/transaction.rb:278:in `within_new_transacti
on'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/connection_adapters/abstract/database_statements.rb:280:in `transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/transactions.rb:212:in `transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1361:in `ddl_transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1309:in `execute_migration_in_transaction'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1281:in `block in migrate_without_lock'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1280:in `each'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1280:in `migrate_without_lock'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1231:in `migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1061:in `up'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/migration.rb:1036:in `migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/tasks/database_tasks.rb:238:in `migrate'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/railties/databases.rake:86:in `block (3 levels) in <top (required)>'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/railties/databases.rake:84:in `each'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/activerecord-6.0.3.1/lib/active_record/railties/databases.rake:84:in `block (2 levels) in <top (required)>'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:281:in `block in execute'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:281:in `each'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:281:in `execute'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:219:in `block in invoke_with_call_chain'
C:/Ruby26-x64/lib/ruby/2.6.0/monitor.rb:235:in `mon_synchronize'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:199:in `invoke_with_call_chain'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/task.rb:188:in `invoke'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:160:in `invoke_task'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:116:in `block (2 levels) in top_level'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:116:in `each'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:116:in `block in top_level'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:125:in `run_with_threads'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:110:in `top_level'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/railties-6.0.3.1/lib/rails/commands/rake/rake_command.rb:23:in `block in perform'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/rake-13.0.1/lib/rake/application.rb:186:in `standard_exception_handling'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/railties-6.0.3.1/lib/rails/commands/rake/rake_command.rb:20:in `perform'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/railties-6.0.3.1/lib/rails/command.rb:48:in `invoke'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/railties-6.0.3.1/lib/rails/commands.rb:18:in `<top (required)>'
bin/rails:4:in `require'
bin/rails:4:in `<main>'
Tasks: TOP => db:migrate
C:Appsrailscmdb>
如果其他人想知道为什么这可能是： 我生成了一个与我的模型同名的迁移，并开始出现TypeError: superclass mismatch for class MyCustomClassName错误。然后我将迁移类重命名为CreateMyCustomClassNameTable但将其文件名保留为产生ArgumentError: wrong number of arguments (given 2, expected 0..1)错误的相同20201217095257_my_custom_class_name.rb。将文件重命名为20201217095257_create_my_custom_class_name_table.rb为我解决了问题。
您错误地生成了迁移。
列名排在第一位，其数据类型紧随其后。将以下内容与您使用的命令进行比较。
rails generate model Customer name:string
您可以通过运行快速修复它
rails destroy model Customer
然后使用我上面共享的generate命令重新生成迁移。
我最近遇到了类似的问题，下面是我得到的错误：
-- create_table(:workers)
rails aborted!
StandardError: An error has occurred, all later migrations canceled:
wrong number of arguments (given 1, expected 0)
/home/wint3r/Learn/RubyOnRails/AssetManager/db/migrate/20210516062205_create_workers.rb:9:in `block in change'
/home/wint3r/Learn/RubyOnRails/AssetManager/db/migrate/20210516062205_create_workers.rb:3:in `change'
/home/wint3r/Learn/RubyOnRails/AssetManager/bin/rails:5:in `<top (required)>'
/home/wint3r/Learn/RubyOnRails/AssetManager/bin/spring:10:in `block in <top (required)>'
/home/wint3r/Learn/RubyOnRails/AssetManager/bin/spring:7:in `<top (required)>'
Caused by:
ArgumentError: wrong number of arguments (given 1, expected 0)
/home/wint3r/Learn/RubyOnRails/AssetManager/db/migrate/20210516062205_create_workers.rb:9:in `block in change'
/home/wint3r/Learn/RubyOnRails/AssetManager/db/migrate/20210516062205_create_workers.rb:3:in `change'
/home/wint3r/Learn/RubyOnRails/AssetManager/bin/rails:5:in `<top (required)>'
/home/wint3r/Learn/RubyOnRails/AssetManager/bin/spring:10:in `block in <top (required)>'
/home/wint3r/Learn/RubyOnRails/AssetManager/bin/spring:7:in `<top (required)>'
Tasks: TOP => db:migrate
在我的情况下，出现问题是因为我尝试将 t.timestamps 用于自定义日期时间字段"emp_joining_date"，我通过将类型从 t.timestamps 更改为 t.datetime 来解决它