element-ui +tree树节点懒加载下的添加,编辑,移除

话不多说,先看图再看代码,因为我第一层是默认就会带出来的,不能删除和编辑,所以第一个只有添加
element-ui +tree树节点懒加载下的添加,编辑,移除

 

 以下是代码,

<template>
  <div>
    <el-tree
      :props="props"
      :load="loadNode"
      lazy
      ref="tree"
      accordion
      :default-expanded-keys="expandedKeys"
      node-key="id"
      style="height: 750px"
      @node-click="handleNodeClick"
    >
      <span class="custom-tree-node" slot-scope="{ node, data }">
        <span>{{ data.name }}</span>
        <span>
          <el-button
            style="margin-left: 5px"
            type="text"
            size="mini"
            @click="() => open(node, data, 1)"
          >
            添加
          </el-button>
          <el-button
            style="margin-left: 5px"
            v-if="!data.project"
            type="text"
            size="mini"
            @click="() => open(node, data, 2)"
          >
            编辑
          </el-button>
          <el-button
            v-if="!data.project"
            style="margin-left: 5px"
            type="text"
            size="mini"
            @click="() => remove(node, data)"
          >
            删除
          </el-button>
        </span>
      </span>
    </el-tree>
    <el-dialog :visible.sync="dialogVisible" width="30%">
      <el-form ref="form" :model="temp" label-width="80px" :rules="rules">
        <el-form-item label="编码" prop="code">
          <el-input v-model="temp.code"></el-input>
        </el-form-item>
        <el-form-item label="名称" prop="name">
          <el-input v-model="temp.name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button size="small" @click="dialogVisible = false">取 消</el-button>
        <el-button size="small" type="primary" @click="submit">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
import {
  add,
  remove,
  update,
  selectListByParentId,
} from "@/api/cost/costbudgetcategory";
export default {
  data() {
    return {
      expandedKeys: [],
      rules: {
        code: [{ required: true, message: "请输入编码", trigger: "blur" }],
        name: [{ required: true, message: "请输入名称", trigger: "blur" }],
      },
      dialogVisible: false,
      data: [],
      defaultProps: {
        children: "children",
        label: "name",
      },
      parentId: 0,
      temp: {
        id: undefined,
        parentId: undefined, // 父id
        mainProjectId: undefined, //项目id
        name: undefined, // 名称
        code: undefined, //编码
        project: undefined,
      },
      id: undefined,
      node_had: undefined,
      resolve_had: undefined,
    };
  },
  components: {},
  mounted() {},
  methods: {
    handleNodeClick(data) {
      //   this.expandedKeys = [];
      //   this.expandedKeys.push(data.id);
      this.$emit("data", data);
    },
    /**
     * 懒加载事件
     */
    loadNode(node, resolve) {
      this.node_had = node;
      this.resolve_had = resolve;
      if (node.level == 0) {
        selectListByParentId(this.parentId).then((response) => {
          return resolve(response.data.data);
        });
      } else if (node.level > 0) {
        selectListByParentId(node.data.id).then((response) => {
          return resolve(response.data.data);
        });
      }
    },
    // 添加传当前节点,编辑传父节点
    refresh() {
      let node = this.$refs.tree.getNode(this.id);
      node.loaded = false;
      node.expand();
    },
    open(node, data, type) {
      // 添加
      if (type == 1) {
        this.restemp();
        this.id = data.id;
        this.temp.parentId = data.id;
        this.temp.mainProjectId = data.mainProjectId;
        this.temp.project = false;
      } else {
        // 编辑
        this.temp = data;
        this.id = node.parent.data.id;
      }
      this.dialogVisible = true;
    },
    // 提交数据
    submit() {
      this.$refs["form"].validate((valid) => {
        if (valid) {
          add(this.temp).then((res) => {
            this.dialogVisible = false;
            this.refresh();
          });
        } else {
          console.log("error submit!!");
          return false;
        }
      });
    },
    remove(node, data) {
      if (node.childNodes.length > 0) {
        this.$message.error("请从最后一级删除");
        return false;
      } else {
        const parent = node.parent;
        const children = parent.childNodes;
        const index = children.findIndex((d) => d.id === data.id);
        children.splice(index, 1);
        remove(data.id).then((res) => {});
      }
    },
    restemp() {
      this.temp = {
        id: undefined,
        parentId: undefined, // 父id
        mainProjectId: undefined, //项目id
        name: undefined, // 名称
        code: undefined, //编码
      };
    },
  },
};
</script>

<style lang="scss" scoped>
/deep/.custom-tree-node {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  padding-right: 8px;
}

/deep/.el-tree-node__content {
  height: 40px !important;
}
</style>

element-ui +tree树节点懒加载下的添加,编辑,移除

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