Ruby on Rails表单提交错误和成功消息

时间:2015-07-21 15:18:01

标签: ruby-on-rails ruby forms

我正在创建一个登录页面,我的根页面上有两个表单(尝试创建登录页面)。对轨道上的红宝石很新,请原谅我,因为我要解释这个非常糟糕。

着陆页控制器(landing_controller)如下所示:

class LandingController < ApplicationController
  def index
    @email = Email.new
    @design = Design.new
  end
end

emails_controller(emails_controller)如下所示:

class EmailsController < ApplicationController
protect_from_forgery with: :exception

def new
    @email = Email.new
end

def create
  @email = Email.new(params[email_params])

  respond_to do |format|
    if @email.save
      format.html  { redirect_to(root_path, :notice => 'Thank You For Subscribing!') }
      format.json  { render json: Email.create(email_params) }
    else
      format.html  { redirect_to(root_path)}
      format.json  { render :json => @email.errors, :status => :unprocessable_entity }
    end
  end
end

    private

    def email_params
        params.require(:email).permit(:username, :email)
    end
end

和设计控制器(designs_controller)看起来与emails_controller几乎相同。

然后我在email.rb模型中进行了一些验证:

class Email < ActiveRecord::Base
    validates :username, :presence => true
    validates :email, :presence => true
end

再次,design.rb看起来几乎一样。

我在着陆页(root_path)索引上的表单如下所示:

    <%= form_for @email, url: emails_path, html: {class: "email-form"} do |f| %>
    <% if @email.errors.any? %>
        <h3>Error</h3>
        <ul>
            <% @email.errors.full_messages.each do |message| %>
            <li><%= message %></li>
            <% end %>
        </ul>
    <% end %>
    <h2>Receive Notifications</h2>
    <%= f.text_field :username, :class => 'email-box', :placeholder => "First Name", :autocomplete => :off %>
    <%= f.text_field :email , :class => 'email-box', :placeholder => "Email", :autocomplete => :off %>
    <%= f.submit "Subscribe", :class => 'email-submit' %>
    <p class="info">- We'll update ​you ​when ​we launch our new website</p>
    <% end %>

当我提交表格中断验证时,我没有错误,如果我按照验证规则提交表单,我不知道它是否在数据库中创建了新条目。如果有人可以提供帮助,我会非常感激。

1 个答案:

答案 0 :(得分:2)

您需要渲染着陆控制器索引操作,而不是重定向到它。因为在重定向时,它会执行@email = Email.new,并且电子邮件中的所有错误都消失了。尝试将其作为电子邮件控制器中的创建操作

def create
  @email = Email.new(email_params)

  respond_to do |format|
    if @email.save
      format.html  { redirect_to root_path, notice: 'Thank You For Subscribing!' }
      format.json  { render json: Email.create(email_params) }
    else
      @design = Design.new
      format.html  { render "landing/index" }
      format.json  { render :json => @email.errors, :status => :unprocessable_entity }
    end
  end
end

有关成功或错误消息,请将其放入application.html.erb

<% if flash[:error].present? %>
  <p class='flash-error'><%= flash[:error] %></p>
<% end %>
<% if flash[:notice].present? %>
  <p class='flash-notice'><%= flash[:notice] %></p>
<% end %>