谷粒商城【成神路】-【4】——分类维护

1.删除功能的实现

2.新增功能的实现

3.修改功能的实现

4.拖拽功能

1.删除功能的实现

1.1逻辑删除

逻辑删除：不删除数据库中真实的数据，用指定字段，显示的表示是否删除

1.在application.yml中加入配置

mybatis-plus:
  global-config:
    db-config:
      logic-delete-value: 1     #1代表删除
      logic-not-delete-value: 0 #0代表没删除

2.实体类字段添加@TableLogic注解

    /**
	 * 是否显示[0-不显示，1显示]
	 */
    @TableLogic(value = "1",delval = "0")
	private Integer showStatus;

@TableLogic的属性值：

谷粒商城【成神路】-【4】——分类维护

1.2 service层删除

1.检查删除的菜单是否被其他地方引用

2.controller层直接调用service

  /**
     * 删除
     *
     * @param asList
     */
    @Override
    public void removeMenuByIds(List asList) {
        //TODO 1.检查当前删除的菜单，是否被其他地方引用

        
        baseMapper.deleteBatchIds(asList);
    }

2.新增功能的实现

因为后端已经生成了save添加功能的接口，所以只对前端代码做改动即可

提示：后端带有@RequestBody注解的要用post请求

  
    
      
        {{ node.label }}
        
          <el-button
            v-if="node.level  append(data)"
          >
            Append
          
           remove(node, data)"
          >
            Delete
          
        
      
    

    
      
    
      
    
  
      
        取 消
        确 定
      
    
  




export default {
  data () {
    return {
      category: {name: '', parentCid: 0, catLevel: 0, showStatus: 1, sort: 0},
      dialogVisible: false,
      menus: [],
      expandedKey: [],
      defaultProps: {
        children: 'children',
        label: 'name'
      }
    }
  },
  methods: {
    handleNodeClick (data) {
      console.log(data)
    },
    getMenus () {
      this.$http({
        url: this.$http.adornUrl('/product/category/list/tree'),
        method: 'get'
      }).then(({ data }) => {
        console.log('获取成功菜单数据', data.data)
        this.menus = data.data
      })
    },
    append (data) {
      console.log('append', data)
      this.dialogVisible = true
      this.category.parentCid = data.catId
      this.category.catLevel = data.catLevel * 1 + 1
    },
     // 添加三级分类
    addCategory () {
      console.log('提交三级分类数据', this.category)
      this.$http({
        url: this.$http.adornUrl('/product/category/save'),
        method: 'post',
        data: this.$http.adornData(this.category, false)
      }).then(({ data }) => {
        this.$message({
          message: '菜单保存成功',
          type: 'success'
        })
        // 关闭对话框
        this.dialogVisible = false
        // 刷新出新的菜单
        this.getMenus()
        // 设置默认要展开的菜单
        this.expandedKey = [this.category.parentCid]
      })
    },
    remove (node, data) {
      var ids = [data.catId]
      this.$confirm(`是否删除【${data.name}】菜单？`, '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      })
        .then(() => {
          // 发送post请求
          this.$http({
            url: this.$http.adornUrl('/product/category/delete'),
            method: 'post',
            data: this.$http.adornData(ids, false)
          }).then(({ data }) => {
            this.$message({
              message: '菜单删除成功',
              type: 'success'
            })
            // 刷新出新菜单
            this.getMenus()
            // 设置需要默认展开的菜单
            this.expandedKey = [node.parent.data.catId]
          })
        })
        .catch(() => {})
      console.log('remove', node, data)
    }
  },
  created () {
    this.getMenus()
  }
}

3.修改功能的实现

后端用直接生成好的接好，直接调用

    /**
     * 批量修改
     */
    @RequestMapping("/update/sort")
    public R updateSort(@RequestBody CategoryEntity[] category){
           categoryService.updateBatchById(Arrays.asList(category));
        return R.ok();
    }

    /**
     * 修改
     */
    @RequestMapping("/update")
    //@RequiresPermissions("product:category:update")
    public R update(@RequestBody CategoryEntity category){
		categoryService.updateById(category);

        return R.ok();
    }

前端直接调用接口即可~（全部放到后面）

4.拖拽功能

全部都是vue+elementUI完成，直接上代码

  
    
    批量保存
    批量删除
    
      
        {{ node.label }}
        
          <el-button
            v-if="node.level  append(data)"
            >添加
          修改
           remove(node, data)"
            >删除
        
      
    

    
      
        
          
        
        
          
        
        
          
        
      
      
        取 消
        确 定
      
    
  



//这里可以导入其他文件（比如：组件，工具js，第三方插件js，json文件，图片文件等等）
//例如：import 《组件名称》 from '《组件路径》';

export default {
  //import引入的组件需要注入到对象中才能使用
  components: {},
  props: {},
  data() {
    return {
      pCid: [],
      draggable: false,
      updateNodes: [],
      maxLevel: 0,
      title: "",
      dialogType: "", //edit,add
      category: {
        name: "",
        parentCid: 0,
        catLevel: 0,
        showStatus: 1,
        sort: 0,
        productUnit: "",
        icon: "",
        catId: null,
      },
      dialogVisible: false,
      menus: [],
      expandedKey: [],
      defaultProps: {
        children: "children",
        label: "name",
      },
    };
  },

  //计算属性 类似于data概念
  computed: {},
  //监控data中的数据变化
  watch: {},
  //方法集合
  methods: {
    getMenus() {
      this.$http({
        url: this.$http.adornUrl("/product/category/list/tree"),
        method: "get",
      }).then(({ data }) => {
        console.log("成功获取到菜单数据...", data.data);
        this.menus = data.data;
      });
    },
    batchDelete() {
      let catIds = [];
      let checkedNodes = this.$refs.menuTree.getCheckedNodes();
      console.log("被选中的元素", checkedNodes);
      for (let i = 0; i  {
          this.$http({
            url: this.$http.adornUrl("/product/category/delete"),
            method: "post",
            data: this.$http.adornData(catIds, false),
          }).then(({ data }) => {
            this.$message({
              message: "菜单批量删除成功",
              type: "success",
            });
            this.getMenus();
          });
        })
        .catch(() => {});
    },
    batchSave() {
      this.$http({
        url: this.$http.adornUrl("/product/category/update/sort"),
        method: "post",
        data: this.$http.adornData(this.updateNodes, false),
      }).then(({ data }) => {
        this.$message({
          message: "菜单顺序等修改成功",
          type: "success",
        });
        //刷新出新的菜单
        this.getMenus();
        //设置需要默认展开的菜单
        this.expandedKey = this.pCid;
        this.updateNodes = [];
        this.maxLevel = 0;
        // this.pCid = 0;
      });
    },
    handleDrop(draggingNode, dropNode, dropType, ev) {
      console.log("handleDrop: ", draggingNode, dropNode, dropType);
      //1、当前节点最新的父节点id
      let pCid = 0;
      let siblings = null;
      if (dropType == "before" || dropType == "after") {
        pCid =
          dropNode.parent.data.catId == undefined
            ? 0
            : dropNode.parent.data.catId;
        siblings = dropNode.parent.childNodes;
      } else {
        pCid = dropNode.data.catId;
        siblings = dropNode.childNodes;
      }
      this.pCid.push(pCid);

      //2、当前拖拽节点的最新顺序，
      for (let i = 0; i  0) {
        for (let i = 0; i < node.childNodes.length; i++) {
          var cNode = node.childNodes[i].data;
          this.updateNodes.push({
            catId: cNode.catId,
            catLevel: node.childNodes[i].level,
          });
          this.updateChildNodeLevel(node.childNodes[i]);
        }
      }
    },
    allowDrop(draggingNode, dropNode, type) {
      //1、被拖动的当前节点以及所在的父节点总层数不能大于3

      //1）、被拖动的当前节点总层数
      console.log("allowDrop:", draggingNode, dropNode, type);
      //
      this.countNodeLevel(draggingNode);
      //当前正在拖动的节点+父节点所在的深度不大于3即可
      let deep = Math.abs(this.maxLevel - draggingNode.level) + 1;
      console.log("深度：", deep);

      //   this.maxLevel
      if (type == "inner") {
        // console.log(
        //   `this.maxLevel：${this.maxLevel}；draggingNode.data.catLevel：${draggingNode.data.catLevel}；dropNode.level：${dropNode.level}`
        // );
        return deep + dropNode.level <= 3;
      } else {
        return deep + dropNode.parent.level  0) {
        for (let i = 0; i  this.maxLevel) {
            this.maxLevel = node.childNodes[i].level;
          }
          this.countNodeLevel(node.childNodes[i]);
        }
      }
    },
    edit(data) {
      console.log("要修改的数据", data);
      this.dialogType = "edit";
      this.title = "修改分类";
      this.dialogVisible = true;

      //发送请求获取当前节点最新的数据
      this.$http({
        url: this.$http.adornUrl(`/product/category/info/${data.catId}`),
        method: "get",
      }).then(({ data }) => {
        //请求成功
        console.log("要回显的数据", data);
        this.category.name = data.data.name;
        this.category.catId = data.data.catId;
        this.category.icon = data.data.icon;
        this.category.productUnit = data.data.productUnit;
        this.category.parentCid = data.data.parentCid;
        this.category.catLevel = data.data.catLevel;
        this.category.sort = data.data.sort;
        this.category.showStatus = data.data.showStatus;
        /**
         *         parentCid: 0,
        catLevel: 0,
        showStatus: 1,
        sort: 0,
         */
      });
    },
    append(data) {
      console.log("append", data);
      this.dialogType = "add";
      this.title = "添加分类";
      this.dialogVisible = true;
      this.category.parentCid = data.catId;
      this.category.catLevel = data.catLevel * 1 + 1;
      this.category.catId = null;
      this.category.name = "";
      this.category.icon = "";
      this.category.productUnit = "";
      this.category.sort = 0;
      this.category.showStatus = 1;
    },

    submitData() {
      if (this.dialogType == "add") {
        this.addCategory();
      }
      if (this.dialogType == "edit") {
        this.editCategory();
      }
    },
    //修改三级分类数据
    editCategory() {
      var { catId, name, icon, productUnit } = this.category;
      this.$http({
        url: this.$http.adornUrl("/product/category/update"),
        method: "post",
        data: this.$http.adornData({ catId, name, icon, productUnit }, false),
      }).then(({ data }) => {
        this.$message({
          message: "菜单修改成功",
          type: "success",
        });
        //关闭对话框
        this.dialogVisible = false;
        //刷新出新的菜单
        this.getMenus();
        //设置需要默认展开的菜单
        this.expandedKey = [this.category.parentCid];
      });
    },
    //添加三级分类
    addCategory() {
      console.log("提交的三级分类数据", this.category);
      this.$http({
        url: this.$http.adornUrl("/product/category/save"),
        method: "post",
        data: this.$http.adornData(this.category, false),
      }).then(({ data }) => {
        this.$message({
          message: "菜单保存成功",
          type: "success",
        });
        //关闭对话框
        this.dialogVisible = false;
        //刷新出新的菜单
        this.getMenus();
        //设置需要默认展开的菜单
        this.expandedKey = [this.category.parentCid];
      });
    },

    remove(node, data) {
      var ids = [data.catId];
      this.$confirm(`是否删除【${data.name}】菜单?`, "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(() => {
          this.$http({
            url: this.$http.adornUrl("/product/category/delete"),
            method: "post",
            data: this.$http.adornData(ids, false),
          }).then(({ data }) => {
            this.$message({
              message: "菜单删除成功",
              type: "success",
            });
            //刷新出新的菜单
            this.getMenus();
            //设置需要默认展开的菜单
            this.expandedKey = [node.parent.data.catId];
          });
        })
        .catch(() => {});

      console.log("remove", node, data);
    },
  },
  //生命周期 - 创建完成（可以访问当前this实例）
  created() {
    this.getMenus();
  },
  //生命周期 - 挂载完成（可以访问DOM元素）
  mounted() {},
  beforeCreate() {}, //生命周期 - 创建之前
  beforeMount() {}, //生命周期 - 挂载之前
  beforeUpdate() {}, //生命周期 - 更新之前
  updated() {}, //生命周期 - 更新之后
  beforeDestroy() {}, //生命周期 - 销毁之前
  destroyed() {}, //生命周期 - 销毁完成
  activated() {}, //如果页面有keep-alive缓存功能，这个函数会触发
};

谷粒商城【成神路】-【4】——分类维护