這是我的database.rb
#!/usr/bin/ruby
require 'postgres'
conn = PGconn.connect("localhost", 5432, '', '', "postgres", "postgres", "postgre")
res = conn.exec('select tablename, tableowner from pg_tables')
res.each do |row|
row.each do |column|
print column
(20-column.length).times{print " "}
end
puts
end
可執行檔案： ruby database.rb
Traceback (most recent call last):
11: from database.rb:4:in `<main>'
10: from database.rb:4:in `new'
9: from /Library/Ruby/Gems/2.6.0/gems/postgres-pr-0.7.0/lib/postgres-pr/postgres-compat.rb:28:in `initialize'
8: from /Library/Ruby/Gems/2.6.0/gems/postgres-pr-0.7.0/lib/postgres-pr/postgres-compat.rb:28:in `new'
7: from /Library/Ruby/Gems/2.6.0/gems/postgres-pr-0.7.0/lib/postgres-pr/connection.rb:58:in `initialize'
6: from /Library/Ruby/Gems/2.6.0/gems/postgres-pr-0.7.0/lib/postgres-pr/connection.rb:58:in `loop'
5: from /Library/Ruby/Gems/2.6.0/gems/postgres-pr-0.7.0/lib/postgres-pr/connection.rb:59:in `block in initialize'
4: from /Library/Ruby/Gems/2.6.0/gems/postgres-pr-0.7.0/lib/postgres-pr/message.rb:58:in `read'
3: from /Library/Ruby/Gems/2.6.0/gems/postgres-pr-0.7.0/lib/postgres-pr/message.rb:116:in `create'
2: from /Library/Ruby/Gems/2.6.0/gems/postgres-pr-0.7.0/lib/postgres-pr/message.rb:137:in `parse'
1: from /Library/Ruby/Gems/2.6.0/gems/postgres-pr-0.7.0/lib/postgres-pr/message.rb:82:in `parse'
/Library/Ruby/Gems/2.6.0/gems/postgres-pr-0.7.0/lib/postgres-pr/message.rb:139:in `block in parse': undefined method `auth_type' for #<PostgresPR::UnknownAuthType:0x0000000133830f98> (NoMethodError)
我接下來該怎么做？
uj5u.com熱心網友回復：
我不認為 PGconn 支持''（空字串）作為選項和 tty 值。
您是否嘗試將它們設定為 nil：
PGconn.connect("localhost", 5432, nil, nil, "postgres", "postgres", "postgre")
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標籤：红宝石 PostgreSQL的 红宝石