使用redirect_to后如何停止控制器的执行？(How do I stop controller execution after using redirect_to? (Using Rails))

 我有一个具有多个操作的控制器，以：year和：month作为URL的属性。 我已经做了一个私人方法check_date来检查日期是否有效，并检查日期不在将来。 
 
def check_date(year, month)
  if month < 1 || month > 12 || year < 2000
    flash[:notice] = I18n.t 'archive.invalid_date'
    redirect_to :action => 'index'
  elsif year > Date.today.year || (year == Date.today.year && month > Date.today.month)
    flash[:notice] = I18n.t 'archive.no_future'
    redirect_to :action => 'month_index', 
      :year => Date.today.year, 
      :month => Date.today.month,
      :type => params[:type]
  end
end
 
 在redirect_to之后是否有一种导轨控制器执行的方式？ 
 
 我可以想到的方法是在redirect_to之后抛出异常，或者从check_date返回一个值，并在调用它的每个动作中检查它 - 类似于 
 
def month_index 
  year = params[:year].to_i
  month = params[:month].to_i
  if !check_date(year, month)
    return
  ...
end
 
 但我想知道是否有一些很好的导轨方式来做到这一点。 我一半希望调用redirect_to rails可以识别我想停止，但是似乎并没有发生。 

I have a controller with multiple actions that take :year and :month as attributes from the URL. I have made a private method check_date to check the date is valid and check the date is not in the future.
 
def check_date(year, month)
  if month < 1 || month > 12 || year < 2000
    flash[:notice] = I18n.t 'archive.invalid_date'
    redirect_to :action => 'index'
  elsif year > Date.today.year || (year == Date.today.year && month > Date.today.month)
    flash[:notice] = I18n.t 'archive.no_future'
    redirect_to :action => 'month_index', 
      :year => Date.today.year, 
      :month => Date.today.month,
      :type => params[:type]
  end
end
 
Is there a rails way of ending controller execution after the redirect_to? 
 
Ways I can think of are either to throw an exception after the redirect_to or to return a value from check_date and check it in each action that calls it - something like
 
def month_index 
  year = params[:year].to_i
  month = params[:month].to_i
  if !check_date(year, month)
    return
  ...
end
 
But I wonder if there is some nice rails way of doing this. I was half hoping that having called redirect_to rails would recognise I wanted to stop, but that doesn't seem to happen.

原文：https://stackoverflow.com/questions/820781