Ruby on Rails 设计用户

Question

我是 ruby​​ on rails 的新手。我最初是一名 PHP/mysql 程序员。我似乎无法理解您如何将任何帖子连接到用户并显示它们（例如，使用用户 ID 成功创建帖子，然后查询用户 ID 以获取他或她的姓名。）

我正在使用设备进行身份验证。

控制器

def create
  poll = current_user.polls.build(params[:poll])
  poll.onefourty = poll.onefourty[0..140]
  poll.created_at = Time.now
  poll.save!

  if @poll.save
    redirect_to root_path
  else
    redirect_to root_path
  end

end

表格

<%= form_for Poll.new, :html => { :multipart => true } do |f| %>

<div id="form">
  <div class="text_input" style="height: 65px;"><%= f.text_area :onefourty %><div class="label" style="height: 63px; line-height: 63px;">Question</div></div>
  <div class="text_input"><%= f.text_field :option1 %><div class="label">Option One</div></div>
  <div class="text_input"><%= f.text_field :option2 %><div class="label">Option Two</div></div>
  <div class="text_input"><%= f.text_field :option3 %><div class="label">Option Three</div></div>
  <div class="text_input"><%= f.text_field :option4 %><div class="label">Option Four</div></div>

  <div id="submit">
 <div id="left">
 </div>
 <%= f.submit :id => "next", :value => "" %>
  </div>
</div>
<% end %>

迁移：

create_table "polls", :force => true do |t|
    t.text     "onefourty"
    t.string   "option1"
    t.string   "option2"
    t.string   "option3"
    t.string   "option4"
    t.string   "option5"
    t.string   "option6"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.string   "photo1_file_name"
    t.string   "photo1_content_type"
    t.integer  "photo1_file_size"
    t.datetime "photo1_updated_at"
    t.string   "photo2_file_name"
    t.string   "photo2_content_type"
    t.integer  "photo2_file_size"
    t.datetime "photo2_updated_at"
    t.string   "photo3_file_name"
    t.string   "photo3_content_type"
    t.integer  "photo3_file_size"
    t.datetime "photo3_updated_at"
    t.string   "photo4_file_name"
    t.string   "photo4_content_type"
    t.integer  "photo4_file_size"
    t.datetime "photo4_updated_at"
  end

create_table "users", :force => true do |t|
    t.string   "email",                               :default => "", :null => false
    t.string   "encrypted_password",   :limit => 128, :default => "", :null => false
    t.string   "password_salt",                       :default => "", :null => false
    t.string   "confirmation_token"
    t.datetime "confirmed_at"
    t.datetime "confirmation_sent_at"
    t.string   "reset_password_token"
    t.string   "remember_token"
    t.datetime "remember_created_at"
    t.integer  "sign_in_count",                       :default => 0
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.string   "current_sign_in_ip"
    t.string   "last_sign_in_ip"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.string   "username"
    t.string   "firstname"
    t.string   "lastname"
    t.string   "avatar_file_name"
    t.string   "avatar_content_type"
    t.integer  "avatar_file_size"
    t.datetime "avatar_updated_at"
   end

Answer 1

假设你有以下结构：

# app/model/user.rb
class User < ActiveRecord::Base
  has_many :polls
  #...
end

# app/model/poll.rb
class Poll < ActiveRecord::Base
  belongs_to :user
  #...
end

如果您成功创建民意调查，看起来您可能就是这样，那么在任何视图中 - 您都可以查询并显示当前用户的民意调查：

# app/views/polls/index.html.erb

<%- if current_user -%>
  <%- current_user.polls.each do |poll| -%>
    <h2><%= poll.onefourty %></h2>
    <ul>
      <li><%= poll.option1 %></li>
      <li><%= poll.option2 %></li>
      <li><%= poll.option3 %></li>
      <li><%= poll.option4 %></li>
      <li><%= poll.option5 %></li>
      <li><%= poll.option6 %></li>
    </ul>
  <%- end -%>
<%- else -%>
  <em>Not logged in</em>
<%- end -%>