Rails form_with 错误(远程:true) [英] Rails form_with errors (remote: true)

问题描述

如何使用 Rails form_with(带有 Ajax 的远程表单)助手显示错误?

How can I display errors using Rails form_with (remote form with Ajax) helper?

我有这个代码:

def create
  @incoming_package = IncomingPackage.new(tracking: params[:tracking])
  if @incoming_package.save
    redirect_to admin_incoming_packages_path, notice: "created"
  else
    flash.now[:danger] = "error" # not displayed
  end
end

这是我的表格:

<%= form_with url: admin_incoming_packages_path do |form| %>
  <%= form.text_field :tracking, required: true, autofocus: true, autocomplete: :off %>
  <%= form.submit "Add" %>
<% end %>

如果没有错误，rails-ujs + Turbolinks 工作正常，新包会自动添加到页面上.如果包未能保存，我如何显示错误(或任何内容)?

If there is no errors rails-ujs + Turbolinks works fine and new package is automatically added on page. How can I display errors (or anything) if a package failed to save?

推荐答案

这里有一个简单的入门方法:

Here's a simple way to get you started:

在表单的查看页面上:

<% if @incoming_package.errors.any? 
  <ul>
    <% @incoming_package.errors.each do |error| %>
      <li><%=error.full_messages%></li>
    <% end %>
  </ul>
<% end %>

然后在您的 create 操作中执行:

Then on your create action do:

def create
  @incoming_package = IncomingPackage.new(tracking: params[:tracking])
  respond_to do |format|
    if @incoming_package.save
      flash[:success] = "The package was saved."
      format.html { redirect_to admin_incoming_packages_path, notice: "created" }
      format.json { render json: {success: true}
    else
      @errors = @incoming_package.errors.add(:base, "Some custom message here if you like")
      flash.now[:danger] = "error" # not displayed
      format.html { render 'new' }
      format.json { render json: @incoming_package.errors, status: :unprocessable_entity }
    end
  end
end

您还必须确保您的 new 操作具有:

You must also make sure your new action has:

@incoming_package = IncomingPackage.new

这篇关于Rails form_with 错误(远程:true)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！