小编Kos*_*aut的帖子

我一直在使用主机变量尝试PGPASSWORD和.pgpass并没有这两个让我来验证数据库.我已经chmod倒是.pgpass给适当的权限,也尝试过:

export PGPASSWORD=mypass and PGPASSWORD=mypass

密码包含\但是我用单引号将其包装起来PGPASS='mypass\',但仍然无法进行身份验证.

我在跑:

pg_dump dbname -U username -Fc

我仍然收到

pg_dump: [archiver (db)] connection to database "dbname" failed: FATAL:  Peer authentication failed for user "username"

我正在尝试创建一个自定义验证,用于验证计划的start_date和end_date不与其他计划重叠

class Schedule < ActiveRecord::Base
#has many scheduleTimes (fk in scheduleTime)
has_many :scheduletimes, :inverse_of => :schedule 

validate :dateOverlaps?

scope :active, lambda {
 where('? between start_date and end_date', Date.today)
}
def dateOverlaps?
  results = ActiveRecord::Base.connection.execute("Select (start_date::DATE, end_date::DATE) OVERLAPS ('#{self.start_date}'::DATE, '#{self.end_date}'::DATE) from schedules;")
  errors.add_to_base("Date ranges cannot overlap with another schedule") if                   results.first["overlaps"] == 't'
end

然而,这导致了

NoMethodError: undefined method `add_to_base' 

我尝试创建自定义验证器并使用私有验证方法无济于事.有人可以为我照亮一些吗？