PG :: InvalidParameterValue：错误：参数“ client_min_messages”的值无效：“ panic” [英] PG::InvalidParameterValue: ERROR: invalid value for parameter "client_min_messages": "panic"

问题描述

rake db：create显示错误PG :: InvalidParameterValue：错误：参数 client_min_messages的值无效： panic
提示：可用值：debug5，debug4，debug3，debug2，debug1，日志，通知，警告，错误。

rake db:create showing error PG::InvalidParameterValue: ERROR: invalid value for parameter "client_min_messages": "panic" HINT: Available values: debug5, debug4, debug3, debug2, debug1, log, notice, warning, error.

捆绑安装后尝试运行rake db：create commond。
在config文件夹中创建的database.yml文件，请在下面找到：

After bundle install tried to run rake db:create commond. Created database.yml file inside the config folder please find below :

development:
  adapter: postgresql
  encoding: utf8
  database: thor_development1
  username: postgres
  password:
  host: localhost

test:
  adapter: postgresql
  encoding: utf8
  database: thor_test1
  username: postgres
  password:
  host: localhost

PG::InvalidParameterValue: ERROR:  invalid value for parameter "client_min_messages": "panic"
HINT:  Available values: debug5, debug4, debug3, debug2, debug1, log, notice, warning, error.
: SET client_min_messages TO 'panic'
/Users/galaxy/.rvm/gems/ruby-2.1.2@folderName/gems/activerecord-4.1.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `async_exec'
/Users/galaxy/.rvm/gems/ruby-2.1.2@folderName/gems/activerecord-4.1.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `block in execute'
/Users/galaxy/.rvm/gems/ruby-2.1.2@folderName/gems/activerecord-4.1.6/lib/active_record/connection_adapters/abstract_adapter.rb:373:in `block in log'
/Users/galaxy/.rvm/gems/ruby-2.1.2@folderName/gems/activesupport-4.1.6/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/Users/galaxy/.rvm/gems/ruby-2.1.2@folderName/gems/activerecord-4.1.6/lib/active_record/connection_adapters/abstract_adapter.rb:367:in `log'
/Users/galaxy/.rvm/gems/ruby-2.1.2@folderName/gems/activerecord-4.1.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:127:in `execute'
/Users/galaxy/.rvm/gems/ruby-2.1.2@folderName/gems/activerecord-4.1.6/lib/active_record/connection_adapters/postgresql/schema_statements.rb:274:in `client_min_messages='
/Users/galaxy/.rvm/gems/ruby-2.1.2@folderName/gems/activerecord-4.1.6/lib/active_record/connection_adapters/postgresql_adapter.rb:634:in `set_standard_conforming_strings'
/Users/galaxy/.rvm/gems/ruby-2.1.2@folderName/gems/activerecord-4.1.6/lib/active_record/connection_adapters/postgresql_adapter.rb:914:in `configure_connection'
/Users/galaxy/.rvm/gems/ruby-2.1.2@folderName/gems/activerecord-4.1.6/lib/active_record/connection_adapters/postgresql_adapter.rb:895:in `connect'
/Users/galaxy/.rvm/gems/ruby-2.1.2@folderName/gems/activerecord-4.1.6/lib/active_record/connection_adapters/postgresql_adapter.rb:568:in `initialize'

尝试在macOS Catalina中安装

Trying to install in macOS Catalina

推荐答案

要使其与PostgreSQL 12版一起使用，我先打了补丁PostgreSQLA dapter类别，以警告消息代替恐慌。
注意，如果您可以将activerecord gem升级到4.2.6或更高版本，则不需要此猴子补丁。我必须这样做，因为我的项目取决于gem activerecord-3.2.22.5

To make it work with PostgreSQL version 12, I monkey patched PostgreSQLAdapter class to replace 'panic' with 'warning' message. Note, if you can upgrade activerecord gem to 4.2.6 or higher versions you don't need to have this monkey patch. I had to do this because my project depends on gem activerecord-3.2.22.5

require 'active_record/connection_adapters/postgresql_adapter'

class ActiveRecord::ConnectionAdapters::PostgreSQLAdapter
  def set_standard_conforming_strings
    old, self.client_min_messages = client_min_messages, 'warning'
    execute('SET standard_conforming_strings = on', 'SCHEMA') rescue nil
  ensure
    self.client_min_messages = old
  end
end

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