通过一个控制器访问多个模型

Question

对不起，菜鸟问题。我有一个允许用户创建简历的表单。我创建了一个简历脚手架，其中包含头衔和职业目标的输入。我为其他部分（经验、教育、技能）制作了单独的数据库表。我希望使用带有简历控制器的resumes/views/_form.html 单一表单提交所有这些信息。所以在我放入的简历模型中（has_many :experiences）和我放入的体验模型中（belongs_to :resume）。我的体验表有两个字段（:job_title、:job_description），所以在views/resumes/_form.html 中我为:job_title 和:job_description 添加了两个额外字段。在这一点上，我有点迷路了。如何使用 Resume 控制器的“new”和“create”方法将这些输入值保存到适当的数据库表中？我知道我现在缺少代码，但如果有任何帮助，我会收到此错误：

undefined method `job_title' for #<Resume:0x007fe5b2304748>

Trace of template inclusion: app/views/resumes/new.html.erb

app/views/resumes/_form.html.erb:24:in `block in _app_views_resumes__form_html_erb___303730996527532694_70312260165660'
app/views/resumes/_form.html.erb:1:in `_app_views_resumes__form_html_erb___303730996527532694_70312260165660'
app/views/resumes/new.html.erb:3:in `_app_views_resumes_new_html_erb___2010250825676564736_70312281682320'

这里是 /resumes/_form.html.erb 视图

    <%= form_for(@resume) do |f| %>
  <% if @resume.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@resume.errors.count, "error") %> prohibited this resume from being saved:</h2>

      <ul>
      <% @resume.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= f.label :title %><br>
    <%= f.text_field :title %>
  </div>
  <div class="field">
    <%= f.label :objective %><br>
    <%= f.text_area :objective %>
  </div>
  <%= fields_for @experience do |fa| %>
    <div class="field">
      <%= fa.label :job_title %><br>
      <%= fa.text_area :job_title %>
    </div>
    <div class="field">
      <%= fa.label :company_name %><br>
      <%= fa.text_area :company_name %>
    </div>
  <% end %>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

resumes_controller

class ResumesController < ApplicationController
      before_action :set_resume, only: [:show, :edit, :update, :destroy]

      # GET /resumes
      # GET /resumes.json
      def index
        @resumes = Resume.all
      end

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

      # GET /resumes/new
      def new
        @resume = Resume.new
      end

      # GET /resumes/1/edit
      def edit
      end

      # POST /resumes
      # POST /resumes.json
      def create
        @resume = Resume.new(resume_params)

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

      # PATCH/PUT /resumes/1
      # PATCH/PUT /resumes/1.json
      def update
        respond_to do |format|
          if @resume.update(resume_params)
            format.html { redirect_to @resume, notice: 'Resume was successfully updated.' }
            format.json { head :no_content }
          else
            format.html { render action: 'edit' }
            format.json { render json: @resume.errors, status: :unprocessable_entity }
          end
        end
      end

      # DELETE /resumes/1
      # DELETE /resumes/1.json
      def destroy
        @resume.destroy
        respond_to do |format|
          format.html { redirect_to resumes_url }
          format.json { head :no_content }
        end
      end

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

        # Never trust parameters from the scary internet, only allow the white list through.
        def resume_params
          params.require(:resume).permit(:title, :objective)
        end
    end

Answer 1

我认为你需要改变

<%= fields_for @experience do |fa| %>

到

<%= f.fields_for @experience do |fa| %>

并确保您在模型中正确设置了accepts_nested_attributes_for。