Golang beego ORM + CRUP 操作详解

  构建beego Web 项目

        首先构建一个beego 的web 项目，这个我们完全可以参考beego 官网中的开发文档，上面介绍的非常的详细，在这我就不给大家介绍，主要是介绍ORM 的CRUP 的操作；这是beego 的官网 https://beego.me/docs/intro/

    

    CRUP 操作

        使用的ORM 的操作，大致步骤是首先创建 数据库的实例，Model实体，控制器 ，还有View 视图；我的实例中使用的是MySQL 数据库；所用应用的数据库驱动也是MySQL 的。

      代码块

      第一: 数据库实例

package models

import (
	"github.com/astaxie/beego"
	"github.com/astaxie/beego/orm"
	_ "github.com/go-sql-driver/mysql"
)

func init() {

	mysqluser := beego.AppConfig.String("mysqluser")
	mysqlpass := beego.AppConfig.String("mysqlpass")
	mysqlurls := beego.AppConfig.String("mysqlurls")
	mysqldb := beego.AppConfig.String("mysqldb")

	orm.RegisterModel(new(DbBrand), new(DbProduct))
	orm.RegisterDriver("mysql", orm.DRMySQL)
	orm.RegisterDataBase("default", "mysql", mysqluser+":"+mysqlpass+"@tcp("+mysqlurls+")/"+mysqldb+"?charset=utf8&loc=Asia%2FShanghai")
	orm.RunSyncdb("default", false, true)
	if beego.AppConfig.String("runmode") == "dev" {
		orm.Debug = true
	}
}

       第二：实体，下面我是创建了两个实体，这个两个实体是有关系，但是在实例中并没有使用它们的关系进行数据库的操作，这个后续为大家补上的。 有关创建model 实体的关系，在beego 开发文档说明的很清楚了我就不这里解析了。

              

  Brand 实体

 

package models

import (
    "time"

    "github.com/astaxie/beego/orm"
)

type DbBrand struct {
    BrandID    int64     `orm:"auto;pk;column(BrandID);" json:"BrandID"`
    BrandName  string    `orm:"size(100);column(BrandName);"json:"BrandName"`
    SortID     int64     `orm:"column(SortID)"`
    Memo       string    `orm:"size(500);column(Memo);"`
    CreateTime time.Time `orm:"auto_now;type(datetime);column(CreateTime)"`

    Product []*DbProduct `orm:"reverse(many)"`
}

func (b *DbBrand) TableName() string {
    return "_Brand"
}

func (b *DbBrand) Query() orm.QuerySeter {
    return orm.NewOrm().QueryTable(b)
}

func (b *DbBrand) Insert() (int64, error) {
    return orm.NewOrm().Insert(b)
}

func (b *DbBrand) Delete() (int64, error) {
    num, err := orm.NewOrm().Delete(b)
    if err != nil {
        return , err
    }
    return num, nil
}

func (b *DbBrand) Update(fields ...string) error {
    _, err := orm.NewOrm().Update(b, fields...)
    if err != nil {
        return err
    }
    return nil
}

func (b *DbBrand) Read(fields ...string) error {
    err := orm.NewOrm().Read(b, fields...)
    if err != nil {
        return err
    }
    return nil
}

Product实体

 

package models

import (
    "time"

    "github.com/astaxie/beego/orm"
)

type DbProduct struct {
    ProductID               int32     `orm:"auto;pk;column(ProductID);" json:"ProductID"`
    Name                    string    `orm:"size(100);column(Name)"`
    Store                   int32     `orm:"column(Store);"`
    CostPrice               float32   `orm:"digits(12);decimals(2);column(CostPrice)"`
    SalePrice               float32   `orm:"digits(12);decimals(2);column(SalePrice)"`
    MarketPrice             float32   `orm:"digits(12);decimals(2);column(MarketPrice)"`
    Memo                    string    `orm:"size(500);null;column(Memo)"`
    Code                    string    `orm:"size(100);column(Code)"`
    OpEmployeeID            int32     `orm:"column(OpEmployeeID);"`
    UseIntegralRule         int32     `orm:"column(UseIntegralRule);"`
    DeductionIntegralRule   int32     `orm:"column(DeductionIntegralRule);"`
    Unit                    string    `orm:"size(100);column(Unit)"`
    Weight                  string    `orm:"size(100);column(Weight)"`
    ReturnIntegralRule      int32     `rm:"column(ReturnIntegralRule);"`
    ReturnIntegralRuleValue int32     `orm:"column(ReturnIntegralRuleValue);"`
    ReturnIntegralValue     int32     `orm:"column(ReturnIntegralValue);"`
    IsAudit                 bool      `orm:"column(IsAudit)"`
    IsHaveInvoice           bool      `orm:"column(IsHaveInvoice)"`
    CreateTime              time.Time `orm:"auto_now;type(datetime);column(CreateTime)"`
    UpdateTime              time.Time `orm:"auto_now;type(datetime);column(UpdateTime)"`

    Brand *DbBrand `orm:"rel(fk);null;on_delete(do_nothing);"`
    // Type           *DbProductType      `orm:"rel(fk);null;on_delete(do_nothing);"`
    // Channel        *DbChannel          `orm:"rel(fk);null;on_delete(do_nothing);"`
    // ProductColor   []*DbProductColor   `orm:"reverse(many)"`
    // ProductSize    []*DbProductSize    `orm:"reverse(many)"`
    // ProductImage   []*DbProductImage   `orm:"reverse(many)"`
    // ProductService []*DbProductService `orm:"reverse(many)"`
    // OrderItem      []*DbOrderItem      `orm:"null;reverse(many)"`
}

func (b *DbProduct) TableName() string {
    return "_Product"
}

func (b *DbProduct) Query() orm.QuerySeter {
    return orm.NewOrm().QueryTable(b)
}

func (b *DbProduct) Insert() (int64, error) {
    return orm.NewOrm().Insert(b)
}

func (b *DbProduct) Delete() error {
    _, err := orm.NewOrm().Delete(b)
    if err != nil {
        return err
    }
    return nil
}

func (b *DbProduct) Update(fields ...string) error {
    _, err := orm.NewOrm().Update(b, fields...)
    if err != nil {
        return err
    }
    return nil
}

func (b *DbProduct) Read(fields ...string) error {
    err := orm.NewOrm().Read(b, fields...)
    if err != nil {
        return err
    }
    return nil
}

Controller 控制器的操作

package controllers

import (
    "strconv"
    "strings"
    "time"
    models "wechatSystem/models"

    "github.com/astaxie/beego"
)

type BrandController struct {
    baseController
}

//品牌列表页
func (this *BrandController) Get() {

    this.Data["Title"] = "品牌管理"
    this.TplName = "Brand/Index.html"

    var dbBrand models.DbBrand
    var list []*models.DbBrand
    dbBrand.Query().OrderBy("-sortID").All(&list)
    this.Data["list"] = list
}

//查询品牌
func (this *BrandController) SeachIndex() {

    brandName := this.GetString("Keys")
    this.TplName = "Brand/Index.html"

    var dbBrand models.DbBrand
    var list []*models.DbBrand

    //模糊查询
    dbBrand.Query().Filter("BrandName__icontains", brandName).All(&list)

    this.Data["list"] = list

}

//品牌添加
func (this *BrandController) Add() {

    this.TplName = "Brand/Details.html"
}

//详情
func (this *BrandController) Details() {
    brandId, _ := strconv.ParseInt(this.Ctx.Input.Param(":id"), , )

    //查询品牌分类集合
    var dbBrandList []*models.DbBrand
    var dbBrand models.DbBrand

    dbBrand.Query().All(&dbBrandList)
    if brandId <=  {
        this.Showmsg("编辑数据错误，返回重试...")
    }

    //根据ID 进行查询
    dbBrand.BrandID = brandId
    err := dbBrand.Read()
    if err != nil {
        this.Showmsg("该数据不存在...")
    }
    this.Data["BrandId"] = brandId
    this.Data["BrandName"] = dbBrand.BrandName
    this.Data["StorId"] = dbBrand.SortID
    this.Data["Memo"] = dbBrand.Memo

    this.TplName = "Brand/Details.html"

}

//保存品牌
func (this *BrandController) Save() {
    var err error
    var brandModel models.DbBrand

    brandID, _ := this.GetInt64("brandId")
    brandName := strings.TrimSpace(this.GetString("BrandName"))
    sortID, _ := this.GetInt64("SortId")
    memo := strings.TrimSpace(this.GetString("Memo"))
    SaveRule := this.GetString("SaveRule")
    brandModel.BrandName = brandName
    brandModel.SortID = sortID
    brandModel.Memo = memo

    brandModel.CreateTime = time.Now()

    if len(brandName) ==  {
        this.Showmsg("品牌名称不能为空！")
    }

    if brandID >  {
        //编辑更新
        brandModel.BrandID = brandID
        err = brandModel.Update("BrandName", "SortID", "Memo", "CreateTime")
    } else {
        //添加信息
        _, err = brandModel.Insert()
    }

    // if err != nil {
    //     this.Showmsg("保存出错，错误信息：" + err.Error())
    // } else {
    //     this.Showmsg("保存成功！")
    // }
    if err != nil {
        this.Showmsg("保存出错，错误信息：" + err.Error())
    }
    if SaveRule == "SaveReturnList" {
        //this.TplName = "Brand/Index.html"
        this.Ctx.Redirect(, "/Brand")
        return
    }

    //this.Ctx.Redirect(302, "/Brand/Details/0")
    this.TplName = "Brand/Details.html"
}

//重新排序
func (this *BrandController) SaveSortId() {

    var err error
    //var modelList []Model
    var brands []string
    var sortIDs []string
    this.Ctx.Input.Bind(&brands, "brandId")

    this.Ctx.Input.Bind(&sortIDs, "sortId")

    // brandId, _ := strconv.ParseInt(this.GetString("brandId"), 10, 64)

    // sortId, _ := strconv.ParseInt(this.GetString("SortID"), 10, 64)

    this.TplName = "Brand/Index.html"

    for i := ; i < len(brands); i++ {
        for j := ; j < len(sortIDs); j++ {
            var dbBrand models.DbBrand
            sID, _ := strconv.ParseInt(sortIDs[j], , )
            dbBrand.SortID = sID
            dbBrand.CreateTime = time.Now()
            bID, _ := strconv.ParseInt(brands[i], , )

            if dbBrand.Query().Filter("BrandId", bID).Exist() {

                dbBrand.BrandID = bID

                err = dbBrand.Update("SortID", "CreateTime")

            }
        }

    }
    if err == nil {
        this.Data["json"] = map[string]interface{}{"Isuccess": "true"}
    } else {
        this.Data["json"] = map[string]interface{}{"Isuccess": "false"}
    }
    this.ServeJSON()

}

//删除
func (this *BrandController) Delete() {

    brandId, _ := strconv.ParseInt(this.GetString("brandId"), , )

    this.TplName = "Brand/Index.html"

    var dbBrand models.DbBrand

    if dbBrand.Query().Filter("BrandId", brandId).Exist() {
        dbBrand.BrandID = brandId
        if num, err := dbBrand.Delete(); err == nil {
            beego.Info("Brand delete", num)

            this.Data["json"] = map[string]interface{}{"Isuccess": "true"}
        } else {
            beego.Error("Brand couldn't be delete. Reason", err)
            this.Data["json"] = map[string]interface{}{"Isuccess": "false"}
        }

        this.ServeJSON()
    }
}

View 视图  视图中使用了模板页

{{template "layout/basemain.html" .}}
{{define "layout/body.html"}}

<div class="location">
        <a class="home"><i></i></a><span>当前页面：金色平台</span>
        <i class="arrow"></i>
        <span>品牌维护</span>
</div>

<form id="searchForm" action="/Brand/SeachIndex" method="post" >
    <!--工具栏-->
    <div class="toolbar-wrap">
        <div id="floatHead" class="toolbar">
            <div class="l-list">
                <ul class="icon-list">
                    <li><a class="add" href="/Brand/Add"><i></i><span>添加</span></a></li>
                    <li><a id="selectAll" href="javascript:;" class="all"><i></i><span>全选</span></a></li>
                    <li><a id="saveBrandId" href="javascript:;" class="save"><i></i><span>保存</span></a></li>
                    <li><a id="delete" href="javascript:;" class="del"><i></i><span>删除</span></a></li>
                </ul>
            </div>
            <div class="r-list">
                 <input type="text" name="Keys" class="keyword" />
                <a id="lbtnSearch" class="btn-search" href="javascript:;" onclick="$('#searchForm').submit();">查询</a>

            </div>
        </div>
    </div>
  <!--/工具栏-->
</form>
<table class="ltable" style="margin-top:10px;text-align: center;">
    <thead>
        <tr>
            <td>选择</td>
            <td>商品品牌</td>
            <td>排序</td>
            <td>创建时间</td>
            <td>操作</td>
        </tr>
    </thead>
    <tbody>
       {{range .list}}
       <tr>
           <td><input id="BrandId" name="BrandId" type="checkbox" class="checkall" value="{{.BrandID}}"/> </td>
           <!--<td>{{.BrandID}}</td>-->
           <td>{{.BrandName}}</td>
           <td><input id="BrandId{{.BrandID}}" name="SortID" type="text" value="{{.SortID}}" class="sort" /></td>
           <td>{{dateformat .CreateTime "2006-01-02 15:04"}}</td>
           <td><a href="/Brand/Details/{{.BrandID}}"> 编辑 </a></td>
       </tr>
       {{end}}
    </tbody>
</table>
{{end}}

<script type="text/javascript">
   $(function(){
       //全选功能 start
       $("#selectAll").click(function(){
           $(".checkall").each(function(){
              this.checked = !this.checked
           })
       })
       //end 

       //排序功能 start
       $("#saveBrandId").click(function(){
           if($(":checkbox:checked[name='BrandId']").length == 0){
               wxframe.warn("请选择需要操作的项！");
               return;
           }

           var brandIds = [];
           var sortIdS = [];

            $(":checkbox:checked[name='BrandId']").each(function(){

               var SortID = $("#BrandId"+ this.value).val();
               <!--brandIds.push({BrandId:this.value,SortID:SortID})-->
               brandIds.push(this.value)
               sortIdS.push(SortID)
            })

             $.ajax({
                url: '/Brand/SaveSortId',
                data: { brandId:brandIds,sortId : sortIdS },
                dataType: 'json',
                type: 'post',
                success: function (json) {
                    if (json.Isuccess) {

                        location.href = '/Brand';
                    }
                }
            });

       })

       //删除功能 start
       $("#delete").click(function(){

           if($(":checkbox:checked[name='BrandId']").length == 0){
               wxframe.warn("请选择需要操作的项！");
               return;
           }

        wxframe.confirm("您确定要删除服务名称吗？",function(){

            var brandIds = [];

            $(":checkbox:checked[name='BrandId']").each(function(){
               brandIds.push(this.value)
            })

             $.ajax({
               url : '/Brand/Delete',
               data : {brandId:brandIds[0]},
               dataType : 'json',
               type : 'post',
               success : function(json){
                   if(json.Isuccess){
                       wxframe.success("删除成功！")
                       location.href = "/Brand"
                   }
               }

            })
        })
       })
       //end

   })
</script>

详情页：

{{template "layout/basemain.html" .}}
{{define "layout/body.html"}}

  <div class="location">
        <a class="home"><i></i></a><span>当前页面：金色平台</span>
        <i class="arrow"></i>
        <span>品牌维护</span>
  </div>

   <div class="content-tab-wrap">
      <div id="floatHead" class="content-tab">
         <div class="content-tab-ul-wrap">
            <ul>
                <li><a href="javascript:" class="selected"> 基本信息 </a></li>
            </ul>
         </div>
      </div>
   </div>
<form id="form1" method="post" action="/Brand/Save" >
   <div class="tab-content">
      <dl>
          <dt>品牌名称：</dt>
          <dd><input type="text" name="BrandName" value="{{.BrandName}}" class="input normal" /> </dd>
      </dl>
      <dl>
          <dt>排序：</dt>
          <dd><input type="text" name="SortId" value="{{.StorId}}" class="input normal" /> </dd>
      </dl>
      <dl>
          <dt>备注：</dt>
          <dd>
              <input type="textarea" name="Memo" class="input" style="width:24%;height:150px;" datatype="*0-300"  tip="300个字符以内。" value="300个字符以内。"/>
          </dd>
      </dl>
   </div>

  <!--工具栏-->
    <div class="page-footer">
        <div class="btn-list btn">
            <input type="hidden" name="brandId" value="{{.BrandId}}" />
            <input type="hidden" name="SaveRule" id="SaveRule"  />
            <input type="submit" class="btn" value="保存" onclick="$('#SaveRule').val('SaveReturnList')" />
            <input type="submit" class="btn" value="保存并继续" onclick="$('#SaveRule').val('SaveAndNext')" />
            <input type="button" class="btn yellow" value="返回列表" onclick="location.href = '/Brand';" />
        </div>
        <div class="clear"></div>
    </div>
 <!--/工具栏-->
 </form>
{{end}}

路由注册

 有关路由的注册规则，可以参考beego 中的开发文档路由设置中有详细的介绍

package routers

import (
    "wechatSystem/controllers"

    "github.com/astaxie/beego"
)

func init() {
    beego.Router("/", &controllers.MainController{})

    //品牌维护
    beego.Router("/Brand", &controllers.BrandController{})
    //添加品牌
    beego.Router("/Brand/Add", &controllers.BrandController{}, "*:Add")
    //删除品牌
    beego.Router("/Brand/Delete", &controllers.BrandController{}, "*:Delete")
    //编辑品牌
    beego.Router("/Brand/Details/:id([0-9]+)", &controllers.BrandController{}, "*:Details")
    //保存品牌
    beego.Router("/Brand/Save", &controllers.BrandController{}, "post:Save")
    //保存排序
    beego.Router("/Brand/SaveSortId", &controllers.BrandController{}, "*:SaveSortId")
    //搜索品牌
    beego.Router("/Brand/SeachIndex", &controllers.BrandController{}, "*:SeachIndex")

}

 本文只提供了一下 实例的代码，有什么问题请留言，谢谢；相互学习，共同进步！！！