Question

我的控制器是

class ContactformController < ApplicationController
def new
    @message = Message.new

  end

  def create
    @message = Message.new(params[:message])

    if @message.valid?
     BookingMailer.new_message(@message).deliver
      redirect_to(contactform_path, :notice => "Message was successfully sent.")
    else
      flash.now.alert = "Please fill all fields."
      render :new
    end
  end
end

我的观点是

<div class="row-fluid wiyo_contact_social">
    <%= form_for @message, :url => contactform_path do |form| %>
  <fieldset class="fields">
    <div class="field">
      <%= form.label :name %>
      <%= form.text_field :name %>
    </div>

    <div class="field">
      <%= form.label :email %>
      <%= form.text_field :email %>
    </div>
    <div class="field">
      <%= form.label :subject %>
      <%= form.text_field :subject %>
    </div>

    <div class="field">
      <%= form.label :body %>
      <%= form.text_area :body %>
    </div>
  </fieldset>

  <fieldset class="actions">
    <%= form.submit "Send" %>
  </fieldset>
<% end %>
</div>

我的模型是message.rb，数据库表名为“messages”

class Message < ActiveRecord::Base

include ActiveModel::Validations
  include ActiveModel::Conversion
  extend ActiveModel::Naming

  attr_accessor :name, :email, :subject, :body

  validates :name, :email, :subject, :body, :presence => true
  validates :email, :format => { :with => %r{.+@.+\..+} }, :allow_blank => true

  def initialize(attributes = {})
    attributes.each do |name, value|
      send("#{name}=", value)
    end
  end

  def persisted?
    false
  end

end

我的配置代码段

 match 'contactform' => 'contactform#new', :as => 'contactform', :via => :get
    match 'contactform' => 'contactform#create', :as => 'contactpost', :via => :post

当我输入mywebsite.com/contactform时，它为nil提供了错误的未定义方法`[]'：NilClass 请帮帮我。

Answer 1

如果名称，电子邮件，子...字段在数据库中，则不需要它们作为attr_accessor。也没有初始化。 ActiveRecord将为您做到这一点

我正在创建电子邮件表单以接收客户的电子邮件。我陷入了未定义的方法`[]＆＃39;为零：NilClass错误

1 个答案: