ruby-on-rails - rjs 中的 Ruby 'if' 条件

Question

仅当用户对象（@row）不为零时，我才想在用户列表中插入用户。如何在 rjs 模板中有条件地插入？

page.insert_html :bottom, :userlist, render(:partial => "user", :locals => { :user => @row, :myid => @row.id })

非常感谢。

Answer 1

究竟如何在普通红宝石中做到这一点

if @row
  page.insert_html(:bottom, :userlist, render(:partial => "user", :locals =>  { :user => @row, :myid => @row.id }))
end

或者如果你想要它在一条线上

page.insert_html(:bottom, :userlist, render(:partial => "user", :locals =>  { :user => @row, :myid => @row.id })) if @row

Answer 2

page.insert_html :bottom, :userlist, render(:partial => "user", :locals =>  { :user => @row, :myid => @row.id }) unless @row.blank?