Question

我一直试图解决这个问题一段时间，但还没到任何地方。如果有人能让我知道如何做到这一点，或者我有什么方法可以使用render方法来代替（目前保留错误但重定向到错误的路径，如下所述... ）我有一个表单的自定义路由，当有验证错误时我试图重定向：

get "clubs/sign_up/:plan_id", to: "clubs#new", as: :new_membership

下面是我目前在我的控制器中的内容，以及关于我尝试过的其他步骤的一些评论

clubs_controller.rb

def create

    @membership = Membership.new(membership_params)

    if @membership.save
      redirect_to root_path
    else
      flash[:error] = "Please check form errors:"
      redirect_to new_membership_path(session[:membership_plan_id]) #errors lost
      # render action: 'new', plan_id: 'silver' # <<<Preserves errors but breaks path, renders: localhost:3000/clubs instead of .../clubs/sign_up/:plan_id
      # session[:membership_errors] = @membership.errors #<<< Doesn't wotk either, getting a cookie overflow error when trying to pass errors to #new
      return
    end
  end

def new
    session[:membership_plan_id] = params[:plan_id]
    @membership = Membership.new
end

Answer 1

假设plan_I＆＃39; d是您模型的一部分..

将渲染线更改为：

render :new

将其余部分更改为：

def new
  session[:membership_plan_id] = params[:plan_id]
  @membership = Membership.new plan_id: params[:plan_id]
end

def create

  @membership = Membership.new(membership_params)

  if @membership.save
    redirect_to root_path
  else
    flash[:error] = @membership.errors.full_messages.to_sentence
    render :new
  end
end

在表单中为plan_id添加隐藏字段。渲染错误的原因是它没有param可用，尝试将它添加到渲染操作不起作用因此你的问题

Answer 2

您需要渲染而不是重定向。在这里使用(..snip..) else flash[:error] = "Problem with form" new end end def new session[:membership_plan_id] = params[:plan_id] @membership ||= Membership.new render 'new' end运算符来帮助..它只是红宝石，所以像

dt1 <- fread("V1 V2 V3
             x b;c;d 1
             y d;ef  2
             z d;ef  3")

Rails4：在控制器中使用`redirect_to`时丢失表单验证错误

2 个答案: