Ruby 如何引用和保存多个用户ID'；s转换为单个表单并显示所述Id'；在Rails 4应用程序的索引/显示页面中_Ruby_Html_Css_Postgresql_Ruby On Rails 4

Ruby 如何引用和保存多个用户ID'；s转换为单个表单并显示所述Id'；在Rails 4应用程序的索引/显示页面中

ruby html css postgresql ruby-on-rails-4

Ruby 如何引用和保存多个用户ID'；s转换为单个表单并显示所述Id'；在Rails 4应用程序的索引/显示页面中,ruby,html,css,postgresql,ruby-on-rails-4,Ruby,Html,Css,Postgresql,Ruby On Rails 4,嘿，我正在Rails 4 Ruby 2.2中构建一个CAD应用程序在我的呼叫表单中，我有一个框，允许调度员选择最多4个单元发送呼叫。（布局见下文）这个问题的简短之处在于了解如何保存和访问用户模型中的4个独立用户id，并将其存储在呼叫模型中，以便它们可以链接并显示在my Show.html.erb中，作为各自的单元1-4（如果需要所有这些单元）这是表单： <%= form_for(@call) do |f| %> <div class="panel panel-su

嘿，我正在Rails 4 Ruby 2.2中构建一个CAD应用程序

在我的呼叫表单中，我有一个框，允许调度员选择最多4个单元发送呼叫。（布局见下文）

这个问题的简短之处在于了解如何保存和访问用户模型中的4个独立用户id，并将其存储在呼叫模型中，以便它们可以链接并显示在my Show.html.erb中，作为各自的单元1-4（如果需要所有这些单元）

这是表单：

<%= form_for(@call) do |f| %>
    <div class="panel panel-success" id="responding-box">
      <div class="panel-heading"><center><h4>Units Responding</h4></center></div>
      <table class="table">
        <thead>
          <tr>
            <th><center>Unit #1</center></th>
            <th><center>Time On Scene</center></th>
            <th><center>Time Clear</center></th>
          </tr>
        </thead>

        <tbody>
          <tr>
            <td><center><%= f.collection_select(:unit_1, User.all, :id, :employee_ident, {}, { :multiple => true } ) %></center></td>
            <td><center><%= f.time_select :unit_on_scene %></center></td>
            <td><center><%= f.time_select :unit_clear %></center></td>
          </tr>
        </tbody>
      </table>
      <br>
      <table class="table">
        <thead>
          <tr>
            <th><center>Unit #2</center></th>
            <th><center>Time On Scene</center></th>
            <th><center>Time Clear</center></th>
          </tr>
        </thead>

        <tbody>
          <tr>
            <td><center><%= f.collection_select(:unit_2, User.all, :id, :employee_ident, {}, { :multiple => false } ) %></center></td>
            <td><center><%= f.time_select :unit2_os %></center></td>
            <td><center><%= f.time_select :unit2_cl %></center></td>
          </tr>
        </tbody>
      </table>
      <br>
      <table class="table">
        <thead>
          <tr>
            <th><center>Unit #3</center></th>
            <th><center>Time On Scene</center></th>
            <th><center>Time Clear</center></th>
          </tr>
        </thead>

        <tbody>
          <tr>
            <td><center><%= f.collection_select(:unit_3, User.all, :id, :employee_ident, {}, { :multiple => false } ) %></center></td>
            <td><center><%= f.time_select :unit3_os %></center></td>
            <td><center><%= f.time_select :unit3_cl %></center></td>
          </tr>
        </tbody>
      </table>
      <br>
      <table class="table">
        <thead>
          <tr>
            <th><center>Unit #4</center></th>
            <th><center>Time On Scene</center></th>
            <th><center>Time Clear</center></th>
          </tr>
        </thead>

        <tbody>
          <tr>
          <td><center><%= f.collection_select(:unit_4, User.all, :id, :employee_ident, {}, { :multiple => false } ) %></center></td> 
            <td><center><%= f.time_select :unit4_os %></center></td>
            <td><center><%= f.time_select :unit4_cl %></center></td>
          </tr>
        </tbody>
      </table>
    </div>
  </div>
<% end %>

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  #  and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable, :lockable, :timeoutable

end

class Call < ActiveRecord::Base

  has_many :users 
end

这里的问题是没有引用所有4个单元的用户id。当我尝试在显示页面上连接用户id“1”以显示每个员工的识别号时，仅显示该id。为了显示这一点，我在Show.html.erb中使用了以下内容

<td><center><%= @call.user.employee_ident %></center></td>

关于这个问题，我在这里有一个类似的帖子，但它更多地涉及到选择框->这是一个了解如何在我的数据库中显示存储在Unit_1,2,3,4列（整数）中的员工标识的过程

任何帮助都将是伟大的，因为我似乎找不到太多关于其他文章或用户有这个问题

提前谢谢

这是通过创建联接表来实现的。感谢所有浏览此页面的人

你能粘贴你的

User

和

Call

模型吗？我建议你应该像

Call有很多用户那样进行关联，我已经添加了控制器，但是关系已经设置好了。。我需要知道如何引用多个user\u id，因为目前我的calls模型中只有user\u id列。。我可以添加几个user\u id列吗？不，在用户模型中添加call\u id列
<div class="panel panel-success" id="responding-box">
      <div class="panel-heading"><center><h4>Units Responding</h4></center></div>
      <table class="table">
        <thead>
          <tr>
            <th><center>Unit #1</center></th>
            <th><center>Time On Scene</center></th>
            <th><center>Time Clear</center></th>
          </tr>
        </thead>

        <tbody>
          <tr>
            <td><center><%= @call.user.employee_ident %></center></td>
            <td><center><%= @call.unit_on_scene.strftime("%H:%m") %></center></td>
            <td><center><%= @call.unit_clear.strftime("%H:%m") %></center></td>
          </tr>
        </tbody>
      </table>
      <br>
      <table class="table">
        <thead>
          <tr>
            <th><center>Unit #2</center></th>
            <th><center>Time On Scene</center></th>
            <th><center>Time Clear</center></th>
          </tr>
        </thead>

        <tbody>
          <tr>
            <td><center><%= @call.user.employee_ident %></center></td>
            <td><center><%= @call.unit2_os.strftime("%H:%m") %></center></td>
            <td><center><%= @call.unit2_cl.strftime("%H:%m") %></center></td>
          </tr>
        </tbody>
      </table>
      <br>
      <table class="table">
        <thead>
          <tr>
            <th><center>Unit #3</center></th>
            <th><center>Time On Scene</center></th>
            <th><center>Time Clear</center></th>
          </tr>
        </thead>

        <tbody>
          <tr>
            <td><center><%= @call.user.employee_ident %></center></td>
            <td><center><%= @call.unit3_os.strftime("%H:%m") %></center></td>
            <td><center><%= @call.unit3_cl.strftime("%H:%m") %></center></td>
          </tr>
        </tbody>
      </table>
      <br>
      <table class="table">
        <thead>
          <tr>
            <th><center>Unit #4</center></th>
            <th><center>Time On Scene</center></th>
            <th><center>Time Clear</center></th>
          </tr>
        </thead>

        <tbody>
          <tr>
            <td><center><%= @call.user.employee_ident %></center></td>
            <td><center><%= @call.unit4_os.strftime("%H:%m") %></center></td>
            <td><center><%= @call.unit4_cl.strftime("%H:%m") %></center></td>
          </tr>
        </tbody>
      </table>
    </div>
  </div>

class CallsController < ApplicationController
  before_action :set_call, only: [:show, :edit, :update, :destroy]

  # GET /calls
  # GET /calls.json
  def index
    @calls = Call.all
    @active_calls = @calls.select{|x| x.status == 'ACTIVE'}
    @pending_calls = @calls.select{|x| x.status == 'PENDING'}
  end

  # GET /calls/1
  # GET /calls/1.json
  def show
  end

  # GET /calls/new
  def new
    @call = Call.new
  end

  # GET /calls/1/edit
  def edit
    @call = Call.find(params[:id])
  end

  # POST /calls
  # POST /calls.json
  def create
    @call = Call.new(call_params)

    respond_to do |format|
      if @call.save
        format.html { redirect_to @call, notice: 'Call was successfully created.' }
        format.json { render :show, status: :created, location: @call }
      else
        format.html { render :new }
        format.json { render json: @call.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /calls/1
  # PATCH/PUT /calls/1.json
  def update
    respond_to do |format|
      if @call.update(call_params)
        format.html { redirect_to @call, notice: 'Call was successfully updated.' }
        format.json { render :show, status: :ok, location: @call }
      else
        format.html { render :edit }
        format.json { render json: @call.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /calls/1
  # DELETE /calls/1.json
  def destroy
    @call.destroy
    respond_to do |format|
      format.html { redirect_to calls_url, notice: 'Call was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_call
      @call = Call.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def call_params
      params.require(:call).permit(:call_time, :status, :primary_type, :secondary_type, :site, :address, :unit_1, :unit_2, :unit_3, :unit_4, :call_details, :unit_on_scene, :unit_clear, :call_num, :site_id, :user_id, :unit2_os, :unit2_cl, :unit3_os, :unit3_cl, :unit4_os, :unit4_cl)
    end
end

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  #  and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable, :lockable, :timeoutable

end

class Call < ActiveRecord::Base

  has_many :users 
end

create_table "calls", force: :cascade do |t|
    t.datetime "call_time"
    t.string   "status"
    t.string   "primary_type"
    t.string   "secondary_type"
    t.string   "address"
    t.string   "call_details"
    t.time     "unit_on_scene"
    t.time     "unit_clear"
    t.integer  "site_id"
    t.datetime "created_at",                                                      null: false
    t.datetime "updated_at",                                                      null: false
    t.time     "unit2_os"
    t.time     "unit2_cl"
    t.time     "unit3_os"
    t.time     "unit3_cl"
    t.time     "unit4_os"
    t.time     "unit4_cl"
    t.integer  "call_number",    default: "nextval('call_number_seq'::regclass)"
    t.integer  "unit_1" <-- References User_id '1'
    t.integer  "unit_2" <-- References User_id '2'
    t.integer  "unit_3" <-- References User_id '3'
    t.integer  "unit_4" <-- References User_id '4'
    t.integer  "user_id" <-- Only Stores one User_id?? 

  create_table "users", force: :cascade do |t|
    t.string   "f_name"
    t.string   "l_name"
    t.date     "dob"
    t.string   "address"
    t.string   "city"
    t.string   "prov"
    t.string   "postal_code"
    t.string   "tel"
    t.date     "start_date"
    t.string   "position"
    t.string   "employee_ident"
    t.boolean  "super_user"
    t.boolean  "admin"
    t.boolean  "dispatch"
    t.boolean  "patrol"
    t.boolean  "locked"
    t.string   "email",                  default: "", null: false
    t.string   "encrypted_password",     default: "", null: false
    t.string   "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer  "sign_in_count",          default: 0,  null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.inet     "current_sign_in_ip"
    t.inet     "last_sign_in_ip"
    t.integer  "failed_attempts",        default: 0,  null: false
    t.string   "unlock_token"
    t.datetime "locked_at"
    t.datetime "created_at",                          null: false
    t.datetime "updated_at",                          null: false