在当前模态上按下按钮时，如何触发另一个模态？

所以我有一个形式的模态。当在该模态上按下“提交”按钮时，我希望执行另一个模态。我怎么做？

这是我的第一个模态- views/shared/_upload_video_popup.html.erb：

<div id="overlay">&nbsp;</div>
<div class="popup" id="add-video-step-1">
  <div class="titles clearfix">
      <h2>Upload a Video</h2>
      <p><i>Step 1 of 2 - TEST</i></p>
  </div>
  <div class="content">
    <% if @family_tree %>
      <%= simple_form_for([@family_tree, @video], :remote => true) do |f| %>
        <div class="column">
              <div class="f-row">
                  <%= f.input :title, label: "Title:" %>
              </div>
              <div class="f-row">
                  <%= f.input :description,label: "Description:" %>
              </div>
              <div class="f-row">
                  <%= f.input :circa, as: :datepicker, start_year: Date.today.year - 5, label: "Circa:" %>
              </div>
              <div class="f-row">
                  <label for="family">Family in this video:</label>
                  <%= f.collection_select :user_ids, @family_tree.members.order(:first_name), :id, :first_name, {}, {multiple: true} %>
              </div>
          </div>
          <%= f.button :submit, "Add Video", id: "video-submit" %>
        <% end %>
      <% end %>
    </div> <!-- //content -->
</div> <!-- //popup -->

这是通过以下按钮执行的：

<%= link_to "<i class='fa fa-film fa-lg'></i> Upload".html_safe, "#", class: "upload popupbox", data: { popup: "add-video-step-1"} %>  

当f.button :submit, "Add Video", id: "video-submit"点击时，我希望执行此模式：

views/videos/upload.html.erb

<div class="bootstrap-styles">
 <div class="modal-header">
    <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
    <h3 id="myModalLabel">Upload your Video</h3>
    <p><i>Step 2 of 2 - TEST</i></p>
  </div>
  <div class="modal-body">
    <div class="form">
      <%= form_tag(@upload_info[:url], :multipart => true) do %>
        <div>Step 2 of 2</div>
        <%= hidden_field_tag :token, @upload_info[:token] %>
        <%= file_field_tag :file, title: 'Choose video to upload' %>
        <p class="uploader">
          <button class="btn btn-success ladda-button" data-color="green" data-style="expand-left"><span class="ladda-label">Upload Video</span><span class="ladda-spinner"></span></button>
        </p>
      <% end %>
    </div>
  </div>
  <div class="modal-footer">
  </div>
</div>

不太确定如何连接两者。

有任何想法吗？

编辑1

路线：

  resources :family_trees, shallow: true do
    resources :videos do
      get :upload
    end
  end

VideoController#Create

  def create
    authorize! :read, @family_tree
    @video = Video.new(video_params)

    respond_to do |format|
      if @video.save
        format.html { redirect_to video_upload_path(@video) }
      else
        format.html { render action: 'new' }
        format.json { render json: @video.errors, status: :unprocessable_entity }
      end
    end
  end

耙道：

video_upload_path GET /videos/:video_id/upload(.:format) videos#upload

使用这些设置，当我在Modal＃1上点击“添加视频”时，日志如下所示：

Started POST "/family_trees/1/videos" for 127.0.0.1 at 2014-11-22 20:41:00 -0500
Processing by VideosController#create as JS
  Parameters: {"utf8"=>"✓", "video"=>{"title"=>"Very Testy", "description"=>"Testing 1 2 3", "circa"=>"", "user_ids"=>[""]}, "commit"=>"Add Video", "family_tree_id"=>"1"}
  User Load (240.9ms)  SELECT  "users".* FROM "users"  WHERE "users"."id" = 1  ORDER BY "users"."id" ASC LIMIT 1
  FamilyTree Load (2.7ms)  SELECT  "family_trees".* FROM "family_trees"  WHERE "family_trees"."user_id" = $1 LIMIT 1  [["user_id", 1]]
  FamilyTree Load (1.7ms)  SELECT  "family_trees".* FROM "family_trees"  WHERE "family_trees"."id" = $1 LIMIT 1  [["id", 1]]
   (1.8ms)  SELECT COUNT(*) FROM "roles" INNER JOIN "users_roles" ON "roles"."id" = "users_roles"."role_id" WHERE "users_roles"."user_id" = $1 AND (((roles.name = 'admin') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL)))  [["user_id", 1]]
  Membership Load (2.2ms)  SELECT "memberships".* FROM "memberships"  WHERE "memberships"."user_id" = 1 AND "memberships"."family_tree_id" = 1
   (9.7ms)  BEGIN
  SQL (5.5ms)  INSERT INTO "videos" ("created_at", "description", "title", "updated_at") VALUES ($1, $2, $3, $4) RETURNING "id"  [["created_at", "2014-11-23 01:41:00.481963"], ["description", "Testing 1 2 3"], ["title", "Very Testy"], ["updated_at", "2014-11-23 01:41:00.481963"]]
   (5.2ms)  COMMIT
Redirected to http://localhost:3000/videos/54/upload
Completed 302 Found in 305ms (ActiveRecord: 269.8ms)


Started GET "/videos/54/upload" for 127.0.0.1 at 2014-11-22 20:41:00 -0500
Processing by VideosController#upload as JS
  Parameters: {"video_id"=>"54"}
  User Load (3.9ms)  SELECT  "users".* FROM "users"  WHERE "users"."id" = 1  ORDER BY "users"."id" ASC LIMIT 1
  FamilyTree Load (3.7ms)  SELECT  "family_trees".* FROM "family_trees"  WHERE "family_trees"."user_id" = $1 LIMIT 1  [["user_id", 1]]
   (1.8ms)  SELECT COUNT(*) FROM "roles" INNER JOIN "users_roles" ON "roles"."id" = "users_roles"."role_id" WHERE "users_roles"."user_id" = $1 AND (((roles.name = 'admin') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL)))  [["user_id", 1]]
  Membership Load (2.2ms)  SELECT "memberships".* FROM "memberships"  WHERE "memberships"."user_id" = 1 AND "memberships"."family_tree_id" = 1
  Video Load (6.8ms)  SELECT  "videos".* FROM "videos"  WHERE "videos"."id" = $1 LIMIT 1  [["id", 54]]
Family Tree: #<FamilyTree id: 1, name: "'s Family Tree", user_id: 1, created_at: "2014-10-04 15:37:18", updated_at: "2014-10-04 15:37:18">
Video: #<Video id: 54, title: "Very Testy", description: "Testing 1 2 3", yt_video_id: nil, is_complete: nil, created_at: "2014-11-23 01:41:00", updated_at: "2014-11-23 01:41:00", reply_id: nil, circa: nil>
Upload Info: {:url=>"http://uploads.gdata.youtube.com/action//1/save_video.54", :token=>"AfeO3xV6xtg"}
  Rendered videos/_upload_video.html.erb (44.1ms)
  Rendered videos/_upload_video.html.erb (2.6ms)
  Rendered videos/_upload_video.html.erb (0.6ms)
  Rendered videos/_upload_video.html.erb (0.9ms)
  Rendered videos/upload.js.erb (55.2ms)
Completed 200 OK in 447ms (Views: 70.1ms | ActiveRecord: 18.3ms)

编辑2

upload.js.erb：

$(document).on("page:change", function() {  
    $("#myVCModal").html("<%= escape_javascript(render 'videos/upload_video') %>");
    $("#myModal").html("<%= escape_javascript(render 'videos/upload_video') %>");
    $("#add-video-step-1").html("<%= escape_javascript(render 'videos/upload_video') %>");
    $("#video-comment").html("<%= escape_javascript(render 'videos/upload_video') %>");
    $('#myModalLabel').modal(show);

    Ladda.bind('input#video-submit');
    console.log("Upload.js.erb has been executed");
});