Ruby on rails 如何将带有重定向的变量传递到？

在我的controller destroy函数中，我想在删除项后重定向到index，并且我想在重定向时传递一个名为“checked”的变量：

def destroy
    @Car = Car.find(params[:id])
    checked = params[:checked]

    if @car.delete != nil

    end

    redirect_to cars_path #I would like to pass "checked" with cars_path URL (call index)
end

如何使用cars\u path传递这个“checked”变量，以便在我的索引函数中获得它？？（cars\u path调用索引函数）

---

如果您不介意url中显示参数，您可以：

redirect_to cars_path(:checked => params[:checked])

如果您真的介意，可以通过会话变量传递：

def destroy
  session[:tmp_checked] = params[:checked]
  redirect_to cars_path
end

def index
  checked = session[:tmp_checked]
  session[:tmp_checked] = nil # THIS IS IMPORTANT. Without this, you still get the last checked value when the user come to the index action directly.
end

看看这个：

def destroy
  session[:tmp_checked] = params[:checked]
  redirect_to cars_path
end

def index
  checked = session[:tmp_checked]
  session[:tmp_checked] = nil # THIS IS IMPORTANT. Without this, you still get the last checked value when the user come to the index action directly.
end