feat(admin): 实现分类管理功能- 添加分类列表展示页面模板- 实现分类编辑和保存功能

- 集成会话管理用于编辑状态跟踪
- 添加分类数据持久化支持
- 更新配置文件以包含分类相关SQL脚本路径
- 实现分类的增删改查逻辑
- 添加分类保存和更新的SQL脚本

32-platform/sportsstore/admin/categories_handler.go

@@ -2,15 +2,45 @@ package admin
 
 import (
 	"platform/http/actionresults"
+	"platform/http/handing"
+	"platform/sessions"
 	"sportstore/models"
+	"sportstore/store"
 )
 
 type CategoriesHandler struct {
 	models.Repository
+	handing.URLGenerator
+	sessions.Session
 }
 
-func (handler CategoriesHandler) GetData() string {
-	return "This is the categories handler"
+type CategoryTemplateContext struct {
+	Categories []models.Category
+	EditId     int
+	EditUrl    string
+	SaveUrl    string
+}
+
+const CategoryEditKey = "category_edit"
+
+func (handler CategoriesHandler) GetData() actionresults.ActionResult {
+	context := CategoryTemplateContext{
+		Categories: handler.GetCategories(),
+		EditId:     handler.Session.GetValueDefault(CategoryEditKey, 0).(int),
+		EditUrl:    store.MustGenerateUrl(handler.URLGenerator, CategoriesHandler.PostCategoryEdit),
+		SaveUrl:    store.MustGenerateUrl(handler.URLGenerator, CategoriesHandler.PostCategorySave),
+	}
+	return actionresults.NewTemplateAction("admin_categories.html", context)
+}
+
+func (handler CategoriesHandler) PostCategoryEdit(ref EditReference) actionresults.ActionResult {
+	handler.Session.SetValue(CategoryEditKey, ref.ID)
+	return actionresults.NewRedirectAction(store.MustGenerateUrl(handler.URLGenerator, AdminHandler.GetSection, "Categories"))
+}
+func (handler CategoriesHandler) PostCategorySave(c models.Category) actionresults.ActionResult {
+	handler.SaveCategory(&c)
+	handler.Session.SetValue(CategoryEditKey, 0)
+	return actionresults.NewRedirectAction(store.MustGenerateUrl(handler.URLGenerator, AdminHandler.GetSection, "Categories"))
 }
 
 func (handler CategoriesHandler) GetSelect(current int) actionresults.ActionResult {

32-platform/sportsstore/config.json

@@ -33,7 +33,9 @@
       "SaveOrder": "sql/save_order.sql",
       "SaveOrderLine": "sql/save_order_line.sql",
       "SaveProduct": "sql/save_product.sql",
-      "UpdateProduct": "sql/update_product.sql"
+      "UpdateProduct": "sql/update_product.sql",
+      "SaveCategory": "sql/save_category.sql",
+      "UpdateCategory": "sql/update_category.sql"
     }
   }
 }

32-platform/sportsstore/models/repo/sql_category_save.go

@@ -0,0 +1,34 @@
+package repo
+
+import "sportstore/models"
+
+func (repo *SqlRepository) SaveCategory(c *models.Category) {
+	if c.ID == 0 {
+		result, err := repo.Commands.SaveCategory.ExecContext(repo.Context, c.CategoryName)
+		if err != nil {
+			repo.Logger.Panicf("Cannot exec SaveCategory command: %v ", err.Error())
+			return
+		}
+		id, err := result.LastInsertId()
+		if err != nil {
+			repo.Logger.Panicf("Cannot exec SaveCategory get LastInsertId: %v ", err.Error())
+			return
+		}
+		c.ID = int(id)
+		return
+	} else {
+		result, err := repo.Commands.UpdateCategory.ExecContext(repo.Context, c.CategoryName, c.ID)
+		if err != nil {
+			repo.Logger.Panicf("Cannot exec UpdateCategory command: %v ", err.Error())
+			return
+		}
+		rowsAffected, err := result.RowsAffected()
+		if err != nil {
+			repo.Logger.Panicf("Cannot exec UpdateCategory get RowsAffected: %v ", err.Error())
+			return
+		}
+		if rowsAffected != 1 {
+			repo.Logger.Panicf("Got exec UpdateCategory unexpected rows affected: %v ", rowsAffected)
+		}
+	}
+}

32-platform/sportsstore/models/repo/sql_repo.go

@@ -32,5 +32,7 @@ type SqlCommands struct {
 	SaveOrder,
 	SaveOrderLine,
 	SaveProduct,
-	UpdateProduct *LoggedStmt
+	UpdateProduct,
+	SaveCategory,
+	UpdateCategory *LoggedStmt
 }

32-platform/sportsstore/models/repository.go

@@ -13,6 +13,8 @@ type Repository interface {
 
 	GetCategories() []Category
 
+	SaveCategory(*Category)
+
 	GetOrder(id int) Order
 
 	GetOrders() []Order

32-platform/sportsstore/sql/save_category.sql

@@ -0,0 +1,2 @@
+INSERT INTO Categories (Name)
+VALUES (?)

32-platform/sportsstore/sql/update_category.sql

@@ -0,0 +1,3 @@
+UPDATE Categories
+SET Name = ?
+WHERE Id = ?

32-platform/sportsstore/templates/admin_categories.html

@@ -0,0 +1,57 @@
+{{ $context := . }}
+
+<table class="table table-sm table-striped table-bordered">
+    <thead>
+    <tr>
+        <th>Id</th>
+        <th>Name</th>
+        <th></th>
+    </tr>
+    </thead>
+    <tbody>
+    {{ range $context.Categories }}
+
+    {{ if ne $context.EditId .ID }}
+    <tr>
+        <td>{{ .ID }}</td>
+        <td>{{ .CategoryName }}</td>
+        <td class="text-center">
+            <form method="post" action="{{ $context.EditUrl }}">
+                <input type="hidden" name="id" value="{{ .ID }}"/>
+                <button type="submit" class="btn btn-sm btn-warning">Edit</button>
+            </form>
+        </td>
+    </tr>
+    {{ else }}
+    <tr>
+        <form method="post" action="{{ $context.SaveUrl }}">
+            <td><input type="hidden" name="id" value="{{ .ID }}"/><input
+                    type="text" value="{{ .ID }}" class="form-control" size="3" disabled/></td>
+            <td><input type="text" name="CategoryName" value="{{ .CategoryName }}" class="form-control" size="12"/></td>
+            <td>
+                <button type="submit" class="btn btn-sm btn-danger">Save</button>
+            </td>
+        </form>
+    </tr>
+    {{ end }}
+
+
+    {{ end }}
+    </tbody>
+    {{ if eq $context.EditId 0 }}
+    <tfoot>
+    <tr>
+        <td colspan="6" class="text-center">Add New Product</td>
+    </tr>
+    <tr>
+        <form method="post" action="{{ $context.SaveUrl }}">
+            <td>-</td>
+            <td><input type="text" name="CategoryName" class="form-control" size="12"/></td>
+            <td>
+                <button type="submit" class="btn btn-sm btn-danger">Save</button>
+            </td>
+        </form>
+    </tr>
+    </tfoot>
+    {{ end }}
+</table>