一.前台自定义商品列表模板
当在首页分类点击进入分类商品列表页面时，可以根据后台分类中的分类模板跳转到对应的模板商品列表页面
1.管理后台商品分类模板设置如下图所示
2.代码展示
(1).商品控制器方法Category()完善
修改controllers/frontend/productController.go中的方法Category(), 判断分类模板,如果后台没有设置,则使用默认模板
// 根据商品分类获取分类下面的所有商品数据
func (con ProductController) Category(c *gin.Context) {
//获取分类id
cateId, _ := models.Int(c.Param("id"))
//当前页
page, _ := models.Int(c.Query("page"))
if page == 0 {
page = 1
}
//每一页显示的数量
pageSize := 2
//获取当前分类
curCate := models.GoodsCate{}
models.DB.Where("id = ? ", cateId).Find(&curCate)
//判断当前分类是否顶级分类,如果是,则获取对应的二级分类,如果不是,则获取对应的兄弟分类
subCate := []models.GoodsCate{}
var tempSlice []int
if curCate.Pid == 0 { // 当前分类是顶级分类,获取对应的二级分类
models.DB.Where("pid = ?", cateId).Find(&subCate)
//把二级分类id放到切片中
for i := 0; i < len(subCate); i++ {
tempSlice = append(tempSlice, subCate[i].Id)
}
} else { // 当前分类是二级分类,获取对应的兄弟分类
models.DB.Where("pid = ?", curCate.Pid).Find(&subCate)
}
//把请求的分类id放入切片
tempSlice = append(tempSlice, cateId)
//通过上面的分类id,获取商品相关数据
goodsList := []models.Goods{}
where := "cate_id in ?"
models.DB.Where(where, tempSlice).Where("status = ?", 1).Offset((page - 1) * pageSize).Limit(pageSize).Find(&goodsList)
//获取总数量
var count int64
models.DB.Where(where, tempSlice).Table("goods").Count(&count)
//定义请求的模板
tpl := "frontend/product/list.html"
//判断分类模板,如果后台没有设置,则使用默认模板
if curCate.Template != "" {
tpl = curCate.Template
}
con.Render(c, tpl, gin.H{
"goodsList": goodsList,
"subCate": subCate,
"currentCate": curCate,
"page": page,
"totalPages": math.Ceil(float64(count) / float64(pageSize)),
})
}(2).模板页面案例
{{ define "frontend/product/catetest.html" }}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
自定义模板
</body>
</html>
{{end}}二.商品详情数据渲染,Markdown语法使用
1.后台商品相关页面
先来回顾一下后台商品相关属性功能页面
2.前端相关界面展示
3.路由代码
完善routers/frontendRouters.go前端路由
package routers
import (
"goshop/controllers/frontend"
"github.com/gin-gonic/gin"
)
//设置前端路由
func FrontendRoutersInit(r *gin.Engine) {
defaultRouters := r.Group("/")
{
//首页
defaultRouters.GET("/", frontend.IndexController{}.Index)
//商品分类对应的商品列表页面
defaultRouters.GET("/category:id", frontend.ProductController{}.Category)
//商品详情页
defaultRouters.GET("/detail", frontend.ProductController{}.Detail)
//获取商品图库信息：获取当前商品对应颜色的图片信息
defaultRouters.GET("/getImgList", frontend.ProductController{}.GetImgList)
}
}
3.控制器,模型代码
在controllers/frontend/productController.go中增加商品详情等方法
//商品详情
func (con ProductController) Detail(c *gin.Context) {
//获取商品id
id, err := models.Int(c.Query("id"))
//判断商品id是否符合要求
if err != nil {
c.Redirect(302, "/")
c.Abort()
}
//1、获取商品信息
goods := models.Goods{Id: id}
models.DB.Find(&goods)
//2、获取关联商品 RelationGoods
relationGoods := []models.Goods{}
//把数据库中保存的关联商品id转换成切片类型
goods.RelationGoods = strings.ReplaceAll(goods.RelationGoods, "，", ",")
relationIds := strings.Split(goods.RelationGoods, ",")
//查询关联商品
models.DB.Where("id in ?", relationIds).Select("id,title,price,goods_version").Find(&relationGoods)
//3、获取关联赠品 GoodsGift
goodsGift := []models.Goods{}
goods.GoodsGift = strings.ReplaceAll(goods.GoodsGift, "，", ",")
giftIds := strings.Split(goods.GoodsGift, ",")
models.DB.Where("id in ?", giftIds).Select("id,title,price,goods_version").Find(&goodsGift)
//4、获取关联颜色 GoodsColor
goodsColor := []models.GoodsColor{}
goods.GoodsColor = strings.ReplaceAll(goods.GoodsColor, "，", ",")
colorIds := strings.Split(goods.GoodsColor, ",")
models.DB.Where("id in ?", colorIds).Find(&goodsColor)
//5、获取关联配件 GoodsFitting
goodsFitting := []models.Goods{}
goods.GoodsFitting = strings.ReplaceAll(goods.GoodsFitting, "，", ",")
fittingIds := strings.Split(goods.GoodsFitting, ",")
models.DB.Where("id in ?", fittingIds).Select("id,title,price,goods_version").Find(&goodsFitting)
//6、获取商品关联的图片 GoodsImage
goodsImage := []models.GoodsImage{}
models.DB.Where("goods_id = ?", goods.Id).Limit(6).Find(&goodsImage)
//7、获取规格参数信息 GoodsAttr
goodsAttr := []models.GoodsAttr{}
models.DB.Where("goods_id = ?", goods.Id).Find(&goodsAttr)
//8、获取更多属性
/*
颜色:红色,白色,黄色 | 尺寸:41,42,43
切片
[
{
Cate:"颜色",
List:[红色,白色,黄色]
},
{
Cate:"尺寸",
List:[41,42,43]
}
]
goodsAttrStrSlice[0] 尺寸:41,42,43
tempSlice[0] 尺寸
tempSlice[1] 41,42,43
goodsAttrStrSlice[1] 套餐:套餐1,套餐2
*/
// 更多属性: goodsAttrStr := "尺寸:41,42,43|套餐:套餐1,套餐2"
goodsAttrStr := goods.GoodsAttr
//字符串替换操作
goodsAttrStr = strings.ReplaceAll(goodsAttrStr, "，", ",")
goodsAttrStr = strings.ReplaceAll(goodsAttrStr, "：", ":")
//实例化商品更多属性结构体
var goodsItemAttrList []models.GoodsItemAttr
//strings.Contains 判断字符串中有没有冒号(:)
if strings.Contains(goodsAttrStr, ":") {
//字符串替换操作:获取属性切片
goodsAttrStrSlice := strings.Split(goodsAttrStr, "|")
//创建切片的存储空间
goodsItemAttrList = make([]models.GoodsItemAttr, len(goodsAttrStrSlice))
for i := 0; i < len(goodsAttrStrSlice); i++ {
//strings.Split(s, sep string) 把字符串s按照sep转换成切片
//拆分 "尺寸:41,42,43
tempSlice := strings.Split(goodsAttrStrSlice[i], ":")
goodsItemAttrList[i].Cate = tempSlice[0]
//拆分 41,42,43
listSlice := strings.Split(tempSlice[1], ",")
goodsItemAttrList[i].List = listSlice
}
}
//定义请求的模板
tpl := "frontend/product/detail.html"
con.Render(c, tpl, gin.H{
"goods": goods,
"relationGoods": relationGoods,
"goodsGift": goodsGift,
"goodsColor": goodsColor,
"goodsFitting": goodsFitting,
"goodsImage": goodsImage,
"goodsAttr": goodsAttr,
"goodsItemAttrList": goodsItemAttrList,
})
}
//获取商品对应颜色的图库信息
func (con ProductController) GetImgList(c *gin.Context) {
//获取商品id
goodsId, err1 := models.Int(c.Query("goods_id"))
//获取商品对应的颜色id
colorId, err2 := models.Int(c.Query("color_id"))
//查询商品图库信息
goodsImageList := []models.GoodsImage{}
err3 := models.DB.Where("goods_id = ? AND color_id = ?", goodsId, colorId).Find(&goodsImageList).Error
if err1 != nil || err2 != nil || err3 != nil {
c.JSON(http.StatusOK, gin.H{
"success": false,
"result": "",
"message": "参数错误",
})
return
}
//判断 goodsImageList的长度 如果goodsImageList没有数据，那么我们需要返回当前商品所有的图库信息
if len(goodsImageList) == 0 {
models.DB.Where("goods_id = ?", goodsId).Find(&goodsImageList)
}
c.JSON(http.StatusOK, gin.H{
"success": true,
"result": goodsImageList,
"message": "获取数据成功",
})
}在models/goodsItemAttr.go中定义一个商品更多属性的结构体
package models
//商品更多属性结构体
type GoodsItemAttr struct {
// 尺寸:41,42,43
Cate string //属性类型: 尺寸
List []string // 对应的值 [41,42,43]
}4.main.go,tools.go
在前端渲染数据的时候，需要解析后台Markdown语法数据，这是就需要在models/tools.go中增加调用 Markdown语法的方法，这样就可以解析后台商品 规格与包装属性中的Markdown语法格式：
Markdown 是一种 轻量级标记语言，它允许人们使用易读易写的纯文本格式编写文档
当前许多网站都广泛使用 Markdown 来撰写帮助文档或是用于论坛上发表消息
更多语法参考： https://www.runoob.com/markdown/md-lists.html
在解析Markdown语法之前，需要 引入gomarkdown包，操作如下：
在tools.go中import github.com/gomarkdown/markdown,然后在main.go目录下 go mod tidy 更新就可以使用啦
models/tools.go中增加FormatAttr()方法
import (
"github.com/gomarkdown/markdown"
)
/*
转换markdown格式
str就是markdown语法
例如:
**我是一个三级标题** <=> <h3>我是一个三级标题</h3>
**我是一个加粗** <=> <strong>我是一个加粗</strong>
*/
func FormatAttr(str string) string {
tempSlice := strings.Split(str, "\n")
var tempStr string
for _, v := range tempSlice {
md := []byte(v)
output := markdown.ToHTML(md, nil, nil)
tempStr += string(output)
}
return tempStr
}增加main.go中的自定义模板函数FormatAttr
//自定义模板函数,必须在r.LoadHTMLGlob前面(只调用,不执行, 可以在html 中使用)
r.SetFuncMap(template.FuncMap{
"UnixToTime": models.UnixToTime, //注册模板函数
"Str2Html": models.Str2Html,
"FormatImg": models.FormatImg,
"Sub": models.Sub,
"SubStr": models.SubStr,
"FormatAttr": models.FormatAttr,
})5.html代码
渲染商品详情相关数据frontend/product/detail.html
{{ define "frontend/product/detail.html" }}
{{ template "frontend/public/page_header.html" .}}
{{ template "frontend/public/middle_nav.html" .}}
<link rel="stylesheet" href="/static/frontend/css/product.css">
<div class="jieshao mt20 w">
<div class="left fl">
<div class="swiper-container">
<div class="swiper-wrapper item_focus" id="item_focus">
{{range $key,$value := .goodsImage}}
<div class="swiper-slide">
<img src="{{$value.ImgUrl | FormatImg}}"/>
</div>
{{end}}
</div>
<div class="swiper-pagination"></div>
<div class="swiper-button-next"></div>
<div class="swiper-button-prev"></div>
</div>
</div>
<div class="right fr">
<div class="h3 ml20 mt20">{{.goods.Title}}</div>
<div class="jianjie mr40 ml20 mt10">{{.goods.SubTitle}}</div>
<div class="jiage ml20 mt10">{{.goods.Price}}元 <span class="old_price">{{.goods.MarketPrice}}元</span></div>
{{$goodsId := .goods.Id}}
{{$relationGoodsLen := len .relationGoods}}
{{if gt $relationGoodsLen 0}}
<div class="ft20 ml20 mt20">选择版本</div>
<div class="xzbb ml20 mt10 clearfix">
{{range $key,$value := .relationGoods}}
<div class="banben fl {{if eq $value.Id $goodsId}}active{{end}}">
<a href="detail?id={{$value.Id}}">
<span>{{$value.GoodsVersion}}</span>
<span>{{$value.Price}}元</span>
</a>
</div>
{{end}}
</div>
{{end}}
{{$goodsColorLen := len .goodsColor}}
{{if gt $relationGoodsLen 0}}
<div class="ft20 ml20 mt10">选择颜色</div>
<div class="xzbb ml20 mt10 clearfix" id="color_list">
{{range $key,$value:=.goodsColor}}
<div class="banben fl" goods_id="{{$goodsId}}" color_id="{{$value.Id}}">
<span class="yuandian" style="background:{{$value.ColorValue}}"></span>
<span class="yanse">{{$value.ColorName}}</span>
</div>
{{end}}
</div>
{{end}}
{{$goodsItemAttrListLen := len .goodsItemAttrList}}
{{if gt $goodsItemAttrListLen 0}}
{{range $key,$value := .goodsItemAttrList}}
<div class="ft20 ml20 mt20">{{$value.Cate}}</div>
<div class="xzbb ml20 mt10 clearfix">
{{range $k,$v := $value.List}}
<div class="banben fl">
<span>{{$v}}</span>
</div>
{{end}}
</div>
{{end}}
{{end}}
<div class="xqxq mt10 ml20">
<div class="top1 mt10">
<div class="left1 fl">{{.goods.GoodsVersion}} <span id="color_name"></span></div>
<div class="right1 fr">{{.goods.Price}}元</div>
<div class="clear"></div>
</div>
<div class="bot mt20 ft20 ftbc">总计：{{.goods.Price}}元</div>
</div>
<div class="xiadan ml20 mt10">
<input class="jrgwc" type="button" name="jrgwc" value="加入购物车"/>
</div>
</div>
<div class="clear"></div>
</div>
<div class="container clearfix">
<div class="c_left">
<h2>看了又看</h2>
<div class="item">
<a target="_blank" href="#">
<img src="/static/upload/20211117/1637139107685884400.jpg"/>
<p class="price recommendLookPrice4183081">￥31.90</p>
<p>三利 纯棉A类标准简约素雅大浴巾 70×140cm 男女同款 柔软舒适吸水裹身巾 豆绿</p>
</a>
</div>
<div class="item">
<a target="_blank" href="#">
<img src="/static/upload/20211117/1637139107685884400.jpg"/>
<p class="price recommendLookPrice4183081">￥31.90</p>
<p>三利 纯棉A类标准简约素雅大浴巾 70×140cm 男女同款 柔软舒适吸水裹身巾 豆绿</p>
</a>
</div>
<div class="item">
<a target="_blank" href="#">
<img src="/static/upload/20211117/1637139107685884400.jpg"/>
<p class="price recommendLookPrice4183081">￥31.90</p>
<p>三利 纯棉A类标准简约素雅大浴巾 70×140cm 男女同款 柔软舒适吸水裹身巾 豆绿</p>
</a>
</div>
</div>
<div class="c_right">
<ul class="detail_list clearfix">
<li class="">详情描述</li>
<li class="">规格参数</li>
<li class="">用户评价</li>
</ul>
<div class="detail_info">
<div class="detail_info_item">
{{Str2Html .goods.GoodsContent}}
</div>
<div class="detail_info_item">
<ul>
{{range $key,$value:=.goodsAttr}}
{{if ne $value.AttributeValue ""}}
<li class="row clearfix">
<div class="span5">
<h2>{{$value.AttributeTitle}}</h2>
</div>
<div class="span15">
{{$value.AttributeValue | FormatAttr | Str2Html}}
</div>
</li>
{{end}}
{{end}}
</ul>
</div>
<div class="detail_info_item">
<ul class="comment_list">
<li>
<div>
<img src="https://www.itying.com/themes/itying/images/stars5.gif">
</div>
<p>这已经是第六部了，一如既往地好用。美中不足得是，尾插和数据线的链接口，用过一段时间，就会有充电接触不良的问题，希望厂家将来有改进。</p>
<p class="eval-order-info"> <span class="eval-time">2018-11-18
14:00:35</span><span>月岩白</span><span>6GB+64GB</span><span></span></p>
</li>
<li>
<div>
<img src="https://www.itying.com/themes/itying/images/stars5.gif">
</div>
<p>这已经是第六部了，一如既往地好用。美中不足得是，尾插和数据线的链接口，用过一段时间，就会有充电接触不良的问题，希望厂家将来有改进。</p>
<p class="eval-order-info"> <span class="eval-time">2018-11-18
14:00:35</span><span>月岩白</span><span>6GB+64GB</span><span></span></p>
</li>
<li>
<div>
<img src="https://www.itying.com/themes/itying/images/stars5.gif">
</div>
<p>这已经是第六部了，一如既往地好用。美中不足得是，尾插和数据线的链接口，用过一段时间，就会有充电接触不良的问题，希望厂家将来有改进。</p>
<p class="eval-order-info"> <span class="eval-time">2018-11-18
14:00:35</span><span>月岩白</span><span>6GB+64GB</span><span></span></p>
</li>
<li>
<div>
<img src="https://www.itying.com/themes/itying/images/stars5.gif">
</div>
<p>这已经是第六部了，一如既往地好用。美中不足得是，尾插和数据线的链接口，用过一段时间，就会有充电接触不良的问题，希望厂家将来有改进。</p>
<p class="eval-order-info"> <span class="eval-time">2018-11-18
14:00:35</span><span>月岩白</span><span>6GB+64GB</span><span></span></p>
</li>
</ul>
</div>
</div>
</div>
</div>
{{ template "frontend/public/page_footer.html" .}}
</body>
</html>
{{end}}6.js代码
在static/frontend/js/base.js中增加 initProductContentTab()方法-商品详情页面 tab切换(内容,规格参数等； initProductContentColor()方法- 商品详情 颜色选中功能,如果有关联的商品图片,则展示对应的商品图片信息
(function ($) {
var app = {
init: function () {
this.initSwiper();
this.initNavSlide();
this.initProductContentTab();
this.initProductContentColor();
},
initSwiper: function () { // 轮播图切换操作
new Swiper('.swiper-container', {
loop: true,
navigation: {
nextEl: '.swiper-button-next',
prevEl: '.swiper-button-prev'
},
pagination: {
el: '.swiper-pagination',
clickable: true
}
});
},
initNavSlide: function () { // 导航鼠标移上去效果
$("#nav_list>li").hover(function () {
$(this).find('.children-list').show();
}, function () {
$(this).find('.children-list').hide();
})
},
initProductContentTab: function () { // 商品详情页面tab切换(内容,规格参数等tab切换)
$(function () {
$('.detail_info .detail_info_item:first').addClass('active');
$('.detail_list li:first').addClass('active');
$('.detail_list li').click(function () {
var index = $(this).index();
$(this).addClass('active').siblings().removeClass('active');
$('.detail_info .detail_info_item').removeClass('active').eq(index).addClass('active');
})
})
},
initProductContentColor: function () { // 商品详情颜色选中功能,如果有关联的商品图片,则展示对应的商品图片信息
var _that = this;
$("#color_list .banben").first().addClass("active");
$("#color_name").html($("#color_list .active .yanse").html())
$("#color_list .banben").click(function () {
$(this).addClass("active").siblings().removeClass("active");
$("#color_name").html($("#color_list .active .yanse").html())
var goods_id = $(this).attr("goods_id")
var color_id = $(this).attr("color_id")
//获取当前商品对应颜色的图片信息
$.get("/product/getImgList", {"goods_id": goods_id, "color_id": color_id}, function (response) {
if (response.success == true) {
var swiperStr = ""
for (var i = 0; i < response.result.length; i++) {
swiperStr += '<div class="swiper-slide"><img src="' + response.result[i].img_url + '"> </div>';
}
$("#item_focus").html(swiperStr)
_that.initSwiper()
}
})
})
}
}
$(function () {
app.init();
})
})($)[上一节][golang gin框架] 25.Gin 商城项目-配置清除缓存以及前台列表页面数据渲染公共数据
