ruby-on-rails - Ruby on Rails 未定义的 simple_form_for 方法

Question

我在为我的 Ruby on Rails 项目创建 View 时遇到了很多麻烦。该模型称为 grouponepage。

这是我的 new.html.erb:

<%= simple_form_for @postings1314 do |r| %>
  <div>
    <%=@postings1314.label :firstName%>
    <%=@postings1314.text_field :firstName%>
  </div>

  <div>
    <%=@postings1314.label :lastName%>
    <%=@postings1314.text_field :lastName%>
  </div>

  <div>
    <%=@postings1314.label :age%>
    <%=@postings1314.text_field :age%>
  </div>

  <div>
    <%=@postings1314.label :bio%>
    <%=@postings1314.text_field :bio%>
  </div>

  <div>
    <%= @postings1314.submit %>
  </div>
<%end%>

这是我的 grouponepostings_controller.rb:

class GrouponepostingsController < ApplicationController
  def index
    @postings1314 = Grouponepage.all
  end
  def show
    @posting1314singular = Grouponepage.find(params[:id])
  end
  def new
    @postings1314 = Grouponepage.new
  end
end

最后，错误仅在呈现 View 时发生，显示:

Users/______/Desktop/TeenRecuiter/app/views/grouponepostings/new.html.erb where line #1 raised:
undefined method `simple_form_for' for #<#<Class:0x007f9de8119850>:0x007f9de6fc4ca8>

Answer 1

我猜你需要添加这个 gem https://github.com/plataformatec/simple_form

将其添加到您的 Gemfile 中:

gem 'simple_form'

运行以下命令进行安装:

bundle install

运行生成器:

rails generate simple_form:install