无法使用 rails 将表单数据设置到数据库中

Question

我有一个 project_site 模型，用户将名称文件上传到数据库中。另一个模型是 project_manager，它接受和拒绝布尔字段和备注字段以及每个 project_site 条目。但我无法将备注和状态布尔数据设置到 project_manager 数据库中。这是我的代码：

project_manager.rb

class ProjectManager < ApplicationRecord
  belongs_to :project_site
end

project_site.rb

class ProjectSite < ApplicationRecord
  has_many :project_managers, dependent: :destroy
  validates :name,:attendance, presence: true
end

project_manager_仪表板

  <table>
    <thead>
      <tr>
        <th>Uploaded By</th>
        <th>Attendance File</th>
        <th colspan="2"></th>
      </tr>
    </thead>

    <tbody>
      <% @project_sites.each do |project_site| %>
        <tr>
            <td><%= project_site.name.titleize %></td>
            <% if project_site.attendance? %>
              <td><%= link_to "View Attendance", project_site.attendance.url, :class => "fi-page-export-csv" %></td>
            <% else %>
              <td>No File Present</td>
            <% end %>

            <td>
              <%= form_for [ @project_site, @project_manager ] do |f| %>
                <div class="row">
                  <div class="medium-6 columns">
                    <%= f.radio_button :status, true  %>
                    <%= f.label :approve %>
                    <%= f.radio_button :status, false  %>
                    <%= f.label :reject %>
                  </div>
                  <br>
                  <br>
                  <div class="medium-6 cloumns">
                    <%= f.label :remark %><br/>
                    <%= f.text_area :remark %>
                  </div>

                    </div>
                  <div>
                    <%= f.submit 'Submit', :class => 'button primary' %>
                  </div>

              <% end %>
            </td>
            <td><%= link_to 'Action', project_site, :class=>'button tiny primary' %></td>
        </tr>
      <% end %>
    </tbody>
  </table>

project_manager_controller.rb

class ProjectManagersController < ApplicationController

  def index
   @project_sites = ProjectSite.all.order("created_at DESC").paginate(page: params[:page], per_page: 10)
   @project_manager = ProjectManager.new
   #@project_manager.project_site_id = @project_site.id
  end


  def create
     @project_manager = ProjectManager.new(remark_params)
    @project_manager.project_site_id = params[:project_site_id]
    @project_manager.save

    redirect_to project_managers_path
  end

  def remark_params
    params.require(:project_manager).permit(:remark, :status)
  end
end

routes.rb

  resources :project_sites
  resources :project_managers

Answer 1

控制器端

   class ProjectManagersController < ApplicationController

      def index
       @project_sites = ProjectSite.all.order("created_at DESC").paginate(page: params[:page], per_page: 10)
       @project_manager = ProjectManager.new
      end


      def create
        @project_manager = ProjectManager.new(remark_params)
        @project_manager.save

        redirect_to project_managers_path
      end

      def remark_params
        params.require(:project_manager).permit(:remark, :status, :project_site_id)
      end
    end

视图

<tbody>
  <% @project_sites.each do |project_site| %>
    <tr>
        <td><%= project_site.name.titleize %></td>
        <% if project_site.attendance? %>
          <td><%= link_to "View Attendance", project_site.attendance.url, :class => "fi-page-export-csv" %></td>
        <% else %>
          <td>No File Present</td>
        <% end %>

        <td>
          <%= form_for @project_manager do |f| %>
            <div class="row">
              <div class="medium-6 columns">
                <%= f.radio_button :status, true  %>
                <%= f.label :approve %>
                <%= f.radio_button :status, false  %>
                <%= f.label :reject %>
              </div>
              <br>
              <br>
              <div class="medium-6 cloumns">
                <%= f.label :remark %><br/>
                <%= f.text_area :remark %>
              </div>
                <%=f.hidden_field :project_site_id, value: project_site.id%>
                </div>
              <div>
                <%= f.submit 'Submit', :class => 'button primary' %>
              </div>

          <% end %>
        </td>
        <td><%= link_to 'Action', project_site, :class=>'button tiny primary' %></td>
    </tr>
  <% end %>
</tbody>

Answer 2

您创建的表单是正确的，您需要一个嵌套表单，因为您正在为项目网站创建项目经理。但是，如果您的表单是嵌套的，您还需要嵌套路由。要创建新记录，它应该如下所示：

routes.rb

resources :project_sites do
  resources :project_managers, only: [:create]
end

（这叫做浅嵌套，只有在创建新记录时才嵌套）。这样您就不必在隐藏字段中传递项目站点 ID，它将成为 url.

的一部分

现在这应该路由 http 请求，当您在表单上单击 'submit' 时将提交该请求到您的 ProjectManagersController。那里的代码看起来不错。如果记录仍未创建，请检查您运行 rails server 所在的终端中的日志。你能看到 POST 请求是从哪里进来的吗？遍历所有行，看看它们是否有意义。我有一种感觉，项目站点没有分配给项目经理，这就是无法保存记录的原因。因为 project_manager.rb 中的 belongs_to :project_site 包含验证。是否有回滚而不是保存预项目管理器？

无法使用 rails 将表单数据设置到数据库中

Not able to set form data into database using rails

ruby

ruby-on-rails

ruby-on-rails-3

ruby-on-rails-4

ruby-on-rails-5