完成子类数据；主类数据功能

app/controllers/statistics_controller.rb

@@ -13,6 +13,10 @@ class StatisticsController < ApplicationController
     end
   end
 
+  def search
+
+  end
+
   # GET /statistics/1
   # GET /statistics/1.json
   def show

app/controllers/sub_categories_controller.rb

@@ -1,5 +1,6 @@
 class SubCategoriesController < ApplicationController
   layout 'admin'
+  before_filter :find_main_category, :only => [:new, :edit]
   before_filter :require_admin
   # GET /sub_categories
   # GET /sub_categories.json
@@ -27,7 +28,6 @@ class SubCategoriesController < ApplicationController
   # GET /sub_categories/new.json
   def new
     @sub_category = SubCategory.new
-    @main_categories = MainCategory.all
     respond_to do |format|
       format.html # new.html.erb
       format.json { render json: @sub_category }
@@ -46,7 +46,7 @@ class SubCategoriesController < ApplicationController
 
     respond_to do |format|
       if @sub_category.save
-        format.html { redirect_to @sub_category, notice: 'Sub category was successfully created.' }
+        format.html { redirect_to sub_categories_path, notice: 'Sub category was successfully created.' }
         format.json { render json: @sub_category, status: :created, location: @sub_category }
       else
         format.html { render action: "new" }
@@ -62,7 +62,7 @@ class SubCategoriesController < ApplicationController
 
     respond_to do |format|
       if @sub_category.update_attributes(params[:sub_category])
-        format.html { redirect_to @sub_category, notice: 'Sub category was successfully updated.' }
+        format.html { redirect_to sub_categories_path, notice: 'Sub category was successfully updated.' }
         format.json { head :no_content }
       else
         format.html { render action: "edit" }
@@ -82,4 +82,9 @@ class SubCategoriesController < ApplicationController
       format.json { head :no_content }
     end
   end
+
+  private
+  def find_main_category
+    @main_categories = MainCategory.all
+  end
 end

app/views/main_categories/index.html.erb

@@ -10,8 +10,8 @@
     <% @main_categories.each do |main_category| %>
       <tr>
         <td><%= main_category.name %></td>
+        <td><%= format_time main_category.created_at %></td>
         <td>
-          <%#= link_to 'Show', main_category %>
           <%= link_to '编辑', edit_main_category_path(main_category) %>
           <%= link_to '删除', main_category, method: :delete, data: { confirm: '确定删除这个数据类别吗?' } %>
         </td>

app/views/sub_categories/edit.html.erb

@@ -1,6 +1,3 @@
 <h1>Editing sub_category</h1>
 
 <%= render 'form' %>
-
-<%= link_to 'Show', @sub_category %> |
-<%= link_to 'Back', sub_categories_path %>

app/views/sub_categories/index.html.erb

@@ -5,15 +5,17 @@
       <tr>
         <th>类别名称</th>
         <th>主类别名称</th>
+        <th>创建时间</th>
         <th>操作</th>
       </tr>
 
     <% @sub_categories.each do |sub_category| %>
       <tr>
         <td><%= sub_category.name %></td>
-        <td><%= sub_category.main_category_id %></td>
+        <td><%= sub_category.main_category.try(:name) %></td>
+        <td><%= format_time sub_category.created_at %></td>
         <td>
-          <%#= link_to 'Show', sub_category %>
+          <%= link_to '新建', new_sub_category_path %>
           <%= link_to '编辑', edit_sub_category_path(sub_category) %>
           <%= link_to '删除', sub_category, method: :delete, data: { confirm: '确认删除这个子类别吗?' } %>
         </td>