rake db:使用postgresql创建编码错误

Question

我正在将我正在使用的现有rails项目导入到我的新arch linux系统中,我已经正确安装了所有gems和postgresql,但是在运行时遇到了一些问题:

rake db:create

我收到以下错误

PGError: ERROR:  new encoding (UTF8) is incompatible with the encoding of the template database (SQL_ASCII)
HINT:  Use the same encoding as in the template database, or use template0 as template.
: CREATE DATABASE "System_test" ENCODING = 'unicode'

我使用正确的编码手动创建了数据库,并且迁移运行良好,但我可以运行

rake db:test:clone

命令因为它尝试创建数据库,我不想手动创建数据库.那么,有人知道解决这个问题吗？

问候

编辑:这是我的database.yml

development:
  adapter: postgresql
  encoding: unicode
  database: System_development
  pool: 5
  username: forellana
  password:

test: &test
  adapter: postgresql
  encoding: unicode
  database: System_test
  pool: 5
  username: forellana
  password:

cucumber:
  <<: *test

这是命令的完整输出

(in /home/fespinoza/Workspace/TLI)
PGError: ERROR:  new encoding (UTF8) is incompatible with the encoding of the template database (SQL_ASCII)
HINT:  Use the same encoding as in the template database, or use template0 as template.
: CREATE DATABASE "System_test" ENCODING = 'unicode'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/connection_adapters/abstract_adapter.rb:207:in `rescue in log'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/connection_adapters/abstract_adapter.rb:199:in `log'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/connection_adapters/postgresql_adapter.rb:493:in `execute'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/connection_adapters/postgresql_adapter.rb:572:in `create_database'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/railties/databases.rake:92:in `rescue in create_database'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/railties/databases.rake:39:in `create_database'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/railties/databases.rake:33:in `block (2 levels) in <top (required)>'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:636:in `call'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:636:in `block in execute'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:631:in `each'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:631:in `execute'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:597:in `block in invoke_with_call_chain'
/home/fespinoza/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:583:in `invoke'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2029:in `block (2 levels) in top_level'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2029:in `each'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2029:in `block in top_level'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2001:in `block in run'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/bin/rake:31:in `<top (required)>'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/bin/rake:19:in `load'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/bin/rake:19:in `<main>'
Couldn't create database for {"adapter"=>"postgresql", "encoding"=>"unicode", "database"=>"System_test", "pool"=>5, "username"=>"forellana", "password"=>nil}
PGError: ERROR:  new encoding (UTF8) is incompatible with the encoding of the template database (SQL_ASCII)
HINT:  Use the same encoding as in the template database, or use template0 as template.
: CREATE DATABASE "System_development" ENCODING = 'unicode'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/connection_adapters/abstract_adapter.rb:207:in `rescue in log'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/connection_adapters/abstract_adapter.rb:199:in `log'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/connection_adapters/postgresql_adapter.rb:493:in `execute'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/connection_adapters/postgresql_adapter.rb:572:in `create_database'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/railties/databases.rake:92:in `rescue in create_database'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/railties/databases.rake:39:in `create_database'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/activerecord-3.0.5/lib/active_record/railties/databases.rake:35:in `block (2 levels) in <top (required)>'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:636:in `call'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:636:in `block in execute'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:631:in `each'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:631:in `execute'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:597:in `block in invoke_with_call_chain'
/home/fespinoza/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:583:in `invoke'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2029:in `block (2 levels) in top_level'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2029:in `each'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2029:in `block in top_level'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2001:in `block in run'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/gems/rake-0.8.7/bin/rake:31:in `<top (required)>'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/bin/rake:19:in `load'
/home/fespinoza/.rvm/gems/ruby-1.9.2-p180/bin/rake:19:in `<main>'
Couldn't create database for {"adapter"=>"postgresql", "encoding"=>"unicode", "database"=>"System_development", "pool"=>5, "username"=>"forellana", "password"=>nil}

Answer 1

要在Rails中修复此问题,我发现您只需将以下行添加到文件的每个部分(开发/生产等)database.yml:

template: template0

有关其他选项,请参阅ActiveRecord/ConnectionAdapters/PostgreSQL/SchemaStatements#create_database.

Answer 2

这里的主要问题是您的模板数据库(template1)是使用ASCII编码创建的,并且您告诉PostgreSQL使用UTF8编码创建新数据库.毋庸置疑,对此并不特别满意.您可以做的是擦除template1数据库并使用这些说明重新创建它.当您的托管服务提供商未正确设置区域设置时,这也可能是一个问题.您可以阅读有关修复丢失的区域设置的更多信息.

我通过这篇帖子找到了关于修复PostgreSQL在Ubuntu 9.10上的默认编码的所有信息

Answer 3

您可以通过执行以下命令将postgres template1更改为UTF :

UPDATE pg_database SET datistemplate = FALSE WHERE datname = 'template1';
DROP DATABASE template1;
CREATE DATABASE template1 WITH TEMPLATE = template0 ENCODING = 'UNICODE';
UPDATE pg_database SET datistemplate = TRUE WHERE datname = 'template1';
\c template1
VACUUM FREEZE;
UPDATE pg_database SET datallowconn = FALSE WHERE datname = 'template1';

Answer 4

与其他答案类似,我发现这个要点非常有帮助.使用Ubuntu 14.04.我想更改默认模板以使用UTF-8.

进入postgres提示:

Activate the postgres console.
su - postgres
psql

然后键入以下命令:

# First, we need to drop template1. Templates can’t be dropped, so we first modify it so t’s an ordinary database:

        UPDATE pg_database SET datistemplate = FALSE WHERE datname = 'template1';

# Now we can drop it:

        DROP DATABASE template1;

# Now its time to create database from template0, with a new default encoding:

        CREATE DATABASE template1 WITH TEMPLATE = template0 ENCODING = 'UNICODE';

# Now modify template1 so it’s actually a template:

        UPDATE pg_database SET datistemplate = TRUE WHERE datname = 'template1';

# Now switch to template1 and VACUUM FREEZE the template:

        \c template1

        VACUUM FREEZE;

问题应该解决.致积于:https://gist.github.com/amolkhanorkar-webonise/8706915