feat: 过滤条件增加下拉树

frontend/src/components/ElTreeSelect/utils.js

@@ -0,0 +1,78 @@
+/*
+ * @moduleName:通用工具类
+ * @Author: dawdler
+ * @Date: 2019-01-09 15:30:18
+ * @LastModifiedBy: dawdler
+ * @LastEditTime: 2020-12-26 14:06:09
+ */
+export default {
+  getTreeData,
+  each
+}
+/*
+each(arr, (item, children) => {
+    item.value = xx;
+    // 该item 包含children，因此直接赋值,不需要单独处理children里面的值
+});
+ * [_each description]  倒查、展平、数据回调返回回当前一条数据和子集
+ * @param  {[Array]}   data     [description]
+ * @param  {Function}  callback [description]
+ * @param  {String}    childName[description]
+ * @return {[Array]}            [description]
+ * 默认使用副本,在callback处理数据，如果不使用副本，那么需要重新对treeData赋值
+    treeData = each(treeData, (item, children) => {
+        item.value = xx;
+    });
+ */
+export function each(data, callback, childName = 'children') {
+  let current
+  let children
+  for (let i = 0, len = data.length; i < len; i++) {
+    current = data[i]
+    children = []
+    if (current[childName] && current[childName].length > 0) {
+      children = current[childName]
+    }
+    callback && callback(current, children)
+    if (children.length > 0) {
+      each(children, callback, childName)
+    }
+  }
+}
+
+/**
+ * @Author yihuang",
+ * @param data     数据
+ * @param id       要比对的名称
+ * @param val      要比对的值
+ * @param name     要返回的名称
+ * @param children 子集名称
+ * @param isRow    是否返回这一行的数据
+ * @注 迭代判断多层
+ * //=======================
+ * 返回这一条数据的中文名
+ * let name=utils.getTreeData(arr, 'flowId', item.decategoryId, 'name');
+ * //=======================
+ * 返回所有匹配的数据
+ * let arr=utils.getTreeData(arr, 'flowId', item.decategoryId, 'name','children',true);
+ */
+export function getTreeData(data, id = 'id', val = '', name = 'name', children = 'children', isRow = false) {
+  const arr = []
+  each(
+    data,
+    item => {
+      if (item[id] === val) {
+        arr.push(item)
+      }
+    },
+    children
+  )
+  return arr.length > 0 ? (isRow ? arr : arr[0][name]) : null
+}
+export function guid() {
+  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
+    const r = (Math.random() * 16) | 0
+    const v = c === 'x' ? r : (r & 0x3) | 0x8
+    return v.toString(16)
+  })
+}