我如何在 Rails 中渲染带有关联项目的表

Question

我在 Rails 中创建了脚手架项目和舞台。 两者在 Rails 中都有多对一的关联。 就像每个项目都有多个阶段，用户将有多个项目。 我能够呈现项目将关联的用户 ID，但舞台会在每个用户上呈现。 我可以解决这个问题吗？

项目文件

  has_many :stages

舞台.rb

  belongs_to :project

项目 show.html.erb 在那里我呈现项目的阶段

<div class="table-scroll">
  <table>
    <thead>
      <tr>
        <th>Stage</th>
        <th>Responsibility</th>
        <th>Status</th>
        <th>Finance</th>
      </tr>
    </thead>

    <tbody>
      <% @stages.each do |stage| %>
        <tr>
          <td><%= stage.stage %></td>
          <td><%= stage.responsibility %></td>
          <% if stage.status == true %>
            <td class="completed"><%= "Completed" %></td>
          <% elsif stage.status == false %>
            <td class="in-progress"><%= "In-Progress" %></td>
          <% else %>
            <td class="yet-to-start"><%= "Yet to Start" %></td>
          <% end %>
          <td><%= stage.finance %></td>

        </tr>
      <% end %>
    </tbody>
  </table>
</div>

project_controller.rb

def index
    @projects = current_user.projects.all.paginate(page: params[:page], per_page: 15)
  end

  def show
    @project=Project.find(params[:id])
    @stages = Stage.all
  end

  def new
    @project = current_user.projects.build
  end

  def create
    @project = current_user.projects.build(project_params)

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

stage_controller.rb

  def index
    @stages = Stage.all
  end

  def show
  end

  def new
    @stage = Stage.new
    @project = Project.find(params[:project_id])
  end


  def create
    @project = Project.find(params[:project_id])
    @stage = @project.stages.build(stage_params)

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

我希望舞台只呈现给他们相关的项目。 我需要做什么改变？

Answer 1

def show
  @project = Project.includes(:stages).find(params[:id])
  @stages = @project.stages
end