基于JEECG制作一个通用的级联字典选择控件-DictCascadeUniversal
Posted 瀚岳-诸葛弩
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字典是所有MIS系统不可缺少的重要组成部分。为减少输入,标准化输入内容,使得数据更加准确地被输入。往往需要在数据库中配置各种各样的字典表。如下图:
而绝大部分字典的字段简单,且高度一致。建议一个通用的字典表,并设计一个灵活度高的字典选择控件能大大提高效率。很多低代码开发平台提供了基础字典的通用方式,但灵活度上稍有欠缺,如:显示效果不好,不能管理级联(树状)字典信息……以JEECG所提供的字典管理为例,如下图所示:
针对上面两个问题,进行一个方便管理,方便自定义的通用字典选择控件
(1)数据库表设计
(2)具体效果
(3)使用配置
(4)效果展示
目前共配置了4种方式,可通过对组件的修改,不断增加选择样式。获取值通过@getSelectedItem方法,获取的是对象,属性丰富。如下:
复选框获取值
单选框获取值
下拉框获取值
下拉树获取值
(5)代码下载
见有道云笔记(下面的代码端是图太多发不了文章凑字的,直接下载有道云笔记里的代码文件即可,欢迎交流)
数据库表结构,放置于boot数据库
/*
Navicat mysql Data Transfer
Source Server : 116.62.233.186
Source Server Type : MySQL
Source Server Version : 50737
Source Host : 116.62.233.186:3306
Source Schema : hanlin_boot
Target Server Type : MySQL
Target Server Version : 50737
File Encoding : 65001
Date: 23/07/2022 16:13:36
*/
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for dict_cascade_universal
-- ----------------------------
DROP TABLE IF EXISTS `dict_cascade_universal`;
CREATE TABLE `dict_cascade_universal` (
`id` varchar(36) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL,
`create_by` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '创建人',
`create_time` datetime NULL DEFAULT NULL COMMENT '创建日期',
`update_by` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '更新人',
`update_time` datetime NULL DEFAULT NULL COMMENT '更新日期',
`sys_org_code` varchar(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '所属部门',
`pid` varchar(36) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '父级节点',
`has_child` varchar(3) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '是否有子节点',
`name` varchar(32) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '名称',
`show_order` int(11) NULL DEFAULT NULL COMMENT '显示顺序',
`comment` text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL COMMENT '备注',
`del_flag` int(11) NULL DEFAULT 0 COMMENT '是否删除',
`path` varchar(32) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '路径',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci ROW_FORMAT = Dynamic;
SET FOREIGN_KEY_CHECKS = 1;
组件文件:放置于前端component任意文件夹处
<template>
<div>
<div v-if='controlType=="弹出窗口树"'>
hello,树
</div>
<div v-else-if='controlType=="dropdown"'>
<a-select @change="onChange" style="width: 220px" v-model='selectedItemId'>
<a-select-option v-for='item in options' :value="item.key">
item.title
</a-select-option>
</a-select>
<!-- selectedItems-->
</div>
<div v-else-if='controlType=="treeSelect_single"'>
<a-tree-select
v-model="selectedItemId"
style="width: 100%"
:dropdown-style=" maxHeight: '300px', overflow: 'auto' "
:tree-data="options"
:placeholder="placeholder"
@change='onChange'
>
</a-tree-select>
<!-- selectedItems-->
</div>
<div v-else-if='controlType=="radiobox_group"'>
<a-radio-group name="radioGroup" v-model='selectedItems' @change="onChange">
<a-radio v-for="item in options" :value="item">
item.title
</a-radio>
</a-radio-group>
<!-- selectedItems-->
</div>
<div v-else-if='controlType=="checkbox_group"'>
<a-checkbox-group @change="onChange" v-model='selectedItems'>
<a-checkbox v-for='item in options' :value="item">
item.title
</a-checkbox>
</a-checkbox-group>
<!-- selectedItems-->
</div>
<div v-else>
请配置控件类型
</div>
</div>
</template>
<script>
import httpAction, getAction, postAction from '@/api/manage'
export default
name: 'KingDictCascadeUniversal',
props:
DictRootId: '',
controlType: '',//弹出窗口树、下拉菜单、下拉树菜单、单选框、复选框
placeholder:''
,
data()
return
dictName: '',
dictPath: '',
dictId: '',
options:[],
selectedItems:[],
selectedItemId:""
,
methods:
getArrayItem(arr)
let that = this
arr.forEach(function(arrItem)
if (arrItem.key === that.selectedItemId)
that.selectedItems = arrItem
that.selectedItems.children=[]
return
if (arrItem.children != null && arrItem.children.length > 0)
that.getArrayItem(arrItem.children)
)
,
onChange:function()
//region 获取对象信息 selectedItems
let that = this
switch(this.controlType)
case "dropdown":
let rsArr = this.options.filter(function(item)
return item.key === that.selectedItemId
)
this.selectedItems = rsArr[0]
break
case "treeSelect_single":
this.getArrayItem(this.options)
break
//endregion
this.$emit('getSelectedItems', this.selectedItems)
,
getTreeNodes(arr, pid, rootNode)
debugger
let that = this
let parentNodes = arr.filter(function(item)
return item.pid === pid
)
parentNodes.forEach(function(item)
let optionObj = new Object();
optionObj.key = item.id
optionObj.value = item.id
optionObj.title = item.name
optionObj.path = item.path
if(rootNode == null)
optionObj.children = []
that.options.push(optionObj)
else
rootNode.children.push(optionObj)
that.getTreeNodes(arr, optionObj.key, optionObj)
)
,
created()
let that = this
this.options = []
let params = new Object()
params.rootID = this.DictRootId
getAction('/jeecg-system/kingsystem/dictCascadeUniversal/getAllNodesFromRoot', params).then(function(res)
if(that.DictRootId == "-1")
that.DictRootId = "0"
that.getTreeNodes(res, that.DictRootId, null)
)
</script>
<style scoped>
</style>
调用示例:放置于views下任意文件夹后端
<template>
<div>
<kingDictCascadeUniversal DictRootId='1550011878280650753' controlType='dropdown' @getSelectedItems='getSelectedValue'></kingDictCascadeUniversal>
<br>
<kingDictCascadeUniversal DictRootId='1550011878280650753' controlType='checkbox_group' @getSelectedItems='getSelectedValue'></kingDictCascadeUniversal>
<br>
<kingDictCascadeUniversal DictRootId='1550011911256268801' controlType='radiobox_group' @getSelectedItems='getSelectedValue'></kingDictCascadeUniversal>
<br>
<kingDictCascadeUniversal DictRootId='1550744481837195266' controlType='treeSelect_single' style='width:200px' placeholder='请选择' @getSelectedItems='getSelectedValue'></kingDictCascadeUniversal>
selectedItems
</div>
</template>
<script>
import kingDictCascadeUniversal from '@comp/kingsystem/KingDictCascadeUinversal/KingDictCascadeUniversal'
export default
components:
kingDictCascadeUniversal,
,
data()
return
selectedItems:
,
methods:
getSelectedValue(rs)
this.selectedItems = rs
;
</script>
后端代码:根据jeecg,按需自动生成。或通过mybatisplus生成(略)
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