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我嘗試從子域的名稱獲取架構的大小。在公共模式的子域的名稱 ,獲取規模架構使用ActiveRecord
上controller.rb
@account = Account.find_by_subdomain(params[:subdomain])
@itemlist = Account.find(:all,:select => 'subdomain')
@schemasize = ActiveRecord::Base.connection.select_rows(%q{select pg_size_pretty(CAST((SELECT SUM(pg_total_relation_size(table_schema || '.' || table_name)) FROM information_schema.tables WHERE table_schema = '}[email protected]_s+%q{') As bigint)) As schema_size}).to_s.gsub(/\D/, '').to_i
獲得本地主機:3000/namesubdomain上命令提示
輸出
(21.0ms) select pg_size_pretty(CAST((SELECT SUM(pg_total_relation_size(table
_schema || '.' || table_name)) FROM information_schema.tables WHERE table_schem
a = '[#<Account subdomain: "namesubdomain">]') As bigint)) As schema_size
我想OU輸入命令提示符如
(151.0ms) select pg_size_pretty(CAST((SELECT SUM(pg_total_relation_size(tabl
e_schema || '.' || table_name)) FROM information_schema.tables WHERE table_sche
ma = 'namesubdomain') As bigint)) As schema_size
有什麼想法嗎?
錯誤輸出.. (4.0ms)選擇pg_size_pretty(CAST((SELECT SUM(pg_total_relation_size(table_ 架構||」。 '|| table_name))FROM information_schema.tables WHERE table_schema ='#')作爲bigint))作爲schema_size –
GeekToL
顯然,對象的默認渲染不會定義'to_s';)使用'子域'而不是 - 更新的答案。 – PinnyM
非常感謝你給我上課。這是非常有幫助:) – GeekToL