Change

app/controllers/admins/forum_sections_controller.rb

@@ -23,6 +23,7 @@ class Admins::ForumSectionsController < Admins::BaseController
 
   def new
     @parent_id = params[:parent_id]
+    @forum_section = ForumSection.new
   end
 
   def create

app/views/admins/forum_sections/_new_forum.html.erb

@@ -1,6 +1,7 @@
 <div class="task-popup" style="width:500px;">
   <div class="task-popup-title clearfix f14">
-    <%= parent_id.present? ? "新建二级版块" : "新建一级版块" %>
+    <%= is_create == "1" ? "新建" : "编辑"%>
+    <%= parent_id.present? ? "二级版块" : "一级版块" %>
   </div>
   <%= form_tag(admins_forum_sections_path, method: :post, class: "", remote: true) do %>
     <%= hidden_field_tag :parent_id,parent_id %>

app/views/admins/forum_sections/new.js.erb

@@ -1,2 +1,2 @@
-var htmlvalue = "<%= j render :partial => 'admins/forum_sections/new_forum', locals: {parent_id: @parent_id} %>";
-pop_box_new(htmlvalue, 520, 400);
+var htmlvalue = "<%= j render :partial => 'admins/forum_sections/new_forum', locals: {parent_id: @parent_id, is_create: "1", forum_section: @forum_section} %>";
+$('#identifier').modal('show')