我如何使用rails 4新语法重写下面的代码。
Tracker.find(:all, :joins => :projects,
:select => "DISTINCT #{Tracker.table_name}.*",
:conditions => ["#{Project.table_name}.lft >= ? AND #{Project.table_name}.rgt <= ? AND #{Project.table_name}.status <> #{STATUS_ARCHIVED}", lft, rgt],
:order => "#{Tracker.table_name}.position")
下面是等效的方法：
Tracker.joins(:projects)
.where("#{Project.table_name}.lft >= ? AND #{Project.table_name}.rgt <= ? AND #{Project.table_name}.status <> #{STATUS_ARCHIVED}", lft, rgt)
.select("DISTINCT #{Tracker.table_name}.*")
.order("#{Tracker.table_name}.position")
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我来说两句