处理验证错误消息以查看 rails 4

Posted 2023-02-26

【中文标题】处理验证错误消息以查看 rails 4

【英文标题】：Handle validation error messages to view rails 4

【发布时间】：2015-04-09 08:25:55

【问题描述】：

我已经实现了简单的表单来注册带有验证码的用户。 一切正常，但我无法管理要在视图上显示的验证错误，它看起来很容易，但我想我在这里遗漏了一些要点。 这是我的模型

class Email < ActiveRecord::Base
    apply_simple_captcha :message => "The secret Image and code were different", :add_to_base => true
    validates_format_of :email, :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]2,)\z/ , :message => "Invalid Email Format"
end

这是我的看法

<%= form_for(@email, url: emails_new_path) do |f| %>
<div class="field">
<%= f.text_field :email, placeholder: "Enter Email" %>
</div>
<%= show_simple_captcha(:email=>"email", :label => "Human   Authentication", :placeholder => "Enter the code") %>
<div class="actions">
<%= f.submit "Sign up" %>
  </div>
<%= @email.errors.full_messages.first if @email.errors.any? %>
<% end %>

控制器

class EmailsController < ApplicationController
   def new
    @email = Email.new(user_params)
    if !user_params.nil?
      if simple_captcha_valid?
        puts "Right captcha"
        @email.save!
        if @email.save
          flash[:success] = "Thanks! We will be in touch soon!"
          redirect_to :action => 'new'
        else
          flash[:success] = "Invalid Emails"
          render :action => 'new'
        end
        else
        puts "Wrong captcha"
        flash[:success] = "Wrong Emails"
      end
    end
  end

  def user_params
     params.require(:email).permit(:email) if params[:email]
  end

end

所以问题是如何管理来自模型和控制器的消息，以便在按钮单击时显示在视图中。 谢谢

【参考方案1】：

您可以使用save_with_captcha 进行验证，例如：

@email = Email.new(user_params)

if @email.save_with_captcha

puts "Right captcha"

else

puts "error with captcha"

end