功能描述
将首页改造为友链，功能包含链接标题和链接 因为后台管理系统还没选好 暂时不做添加功能 由数据库添加数据，页面做展示使用。
后台代码
models
title 标题结构体
package models
type Title struct {
Id int `form:"id"`
Name string `form:"name"`
}
link 存放具体链接
package models
type Link struct {
Id int `form:"id"`
Pid int `form:"pid"`
Title string `form:"title"`
Path string `form:"path"`
}
repo
title_repo 链接数据库查询所有标题
package repo
import (
"github.com/go-xorm/xorm"
"log"
"myCommunity/models"
)
type TitleRepo struct {
engine *xorm.Engine
}
func TitleDao(engine *xorm.Engine) *TitleRepo {
return &TitleRepo{
engine: engine,
}
}
func (repo TitleRepo) GetAll() []models.Title {
var datalist []models.Title
err := repo.engine.Where("1=1").Find(&datalist)
if err != nil {
log.Println(err)
return datalist
} else {
return datalist
}
}
link_repo 链接数据库查询所有链接
package repo
import (
"github.com/go-xorm/xorm"
"log"
"myCommunity/models"
)
type LinkRepo struct {
engine *xorm.Engine
}
func LinkDao(engine *xorm.Engine) *LinkRepo {
return &LinkRepo{
engine: engine,
}
}
func (repo LinkRepo) GetAll() []models.Link {
var datalist []models.Link
err := repo.engine.Where("1=1").Find(&datalist)
if err != nil {
log.Println(err)
return datalist
} else {
return datalist
}
}
service
title_service 调用repo查询所有标题
package service
import (
"myCommunity/datasource"
"myCommunity/models"
"myCommunity/repo"
)
type TitleService interface {
GetAll() []models.Title
}
func NewTitleService() *titleService {
return &titleService{
dao: repo.TitleDao(datasource.DbHelper()),
}
}
type titleService struct {
dao *repo.TitleRepo
}
func (b titleService) GetAll() []models.Title {
return b.dao.GetAll()
}
link_service 调用repo查询所有链接
package service
import (
"myCommunity/datasource"
"myCommunity/models"
"myCommunity/repo"
)
type LinkService interface {
GetAll() []models.Link
}
func NewLinkService() *linkService {
return &linkService{
dao: repo.LinkDao(datasource.DbHelper()),
}
}
type linkService struct {
dao *repo.LinkRepo
}
func (b linkService) GetAll() []models.Link {
return b.dao.GetAll()
}
controller
link_controller 注册linkService和titleSerivce 查询所有标题和链接返回link.html
package controllers
import (
"github.com/kataras/iris/v12"
"github.com/kataras/iris/v12/mvc"
"myCommunity/service"
)
type LinkController struct {
LinkService service.LinkService
TitleService service.TitleService
}
// Get 返回message
func (c *LinkController) Get() mvc.Result {
// 获取所有留言
linkList := c.LinkService.GetAll()
titleList := c.TitleService.GetAll()
return mvc.View{
Name: "link.html",
Data: iris.Map{
"Title": titleList,
"Link": linkList,
},
}
}
路由
在route文件夹中增加route.go
package route
import (
"github.com/kataras/iris/v12"
"github.com/kataras/iris/v12/mvc"
"myCommunity/controllers"
"myCommunity/service"
)
func Route(app *iris.Application) {
// 注册服务
mvc.Configure(app.Party("/link"), func(app *mvc.Application) {
app.Register(service.NewLinkService())
app.Register(service.NewTitleService())
app.Handle(new(controllers.LinkController))
})
}
main.go中注册路由
// 注册路由
route.Route(app)
前端代码
前端只写主要代码 如下
{{range $d := .Title}}
<article>
<section>
<h1>{{$d.Name}}</h1>
<p>
{{range $l := $.Link}}
{{if eq $l.Pid $d.Id }}
<a class="layui-btn layui-btn-primary layui-btn-xs" lay-event="show" href="{{unescaped $l.Path}}" target="_blank">
<i class="layui-icon layui-icon-list"></i>{{$l.Title}}
</a>
{{end}}
{{end}}
</p>
</section>
</article>
{{end}}
其中用到了 range 遍历对象 以及 unescaped, unescaped目的为不转义html代码。go template本身没有这种语法，所以需要增加一个自定义标签。在utils里增加一个文件htmlengine.go,具体代码如下：
package utils
import (
"github.com/kataras/iris/v12/view"
"html/template"
)
func HtmlEngine(html *view.HTMLEngine) {
// 自定义标签 不转义HTML
html.AddFunc("unescaped", func(str string) template.HTML {
return template.HTML(str)
})
}
这样在html里就可以直接使用了 使用方法为 {{unescaped $.item}}
结语
友链就是这样了 以后找个服务器部署下
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