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How to implement a tree control in Element? I believe many inexperienced people don't know what to do about it. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

1. Front-end layout Search for New Vue ({el:'# home' Data: {bkTopoData: [{bk_inst_name: 'level 1', child: [{bk_inst_name: 'level 1-1' Child: [{bk_inst_name: 'level 3 1-1-1'}]} ]} {bk_inst_name: 'level 2', child: [{bk_inst_name: 'level 2-1' Child: [{bk_inst_name: 'level 3 2-1-1'}]} {bk_inst_name: 'level 2-2' Child: [{bk_inst_name: 'level 3 2-2-1'}]} ]} {bk_inst_name: 'level 3, child: [{bk_inst_name:' level 3-1' Child: [{bk_inst_name: 'level 3-1-1'}]} {bk_inst_name: 'level 2 3-2' Child: [{bk_inst_name: 'level 3-2-1'}]} ]}] SetProps: {children: 'child', label:' bk_inst_name'}, searchBkId:'', searchContent:'', bkBizData: [], tableData: [], hostData: []} Mounted () {this.init ()}, methods: {init () {axios.get (site_url + "get_biz_list/") .then (res = > {if (res.data.result) {this.bkBizData = res.data.data) } else {this.$message.error ('failed to acquire business');}}, 'json') }, handleNodeClick (data) {axios.post (site_url + "search_host/", data) .then (res = > {if (res.data.result) {this.hostData = res.data.data) } else {this.$message.error ('failed to acquire host');}}, 'json') }, bizChange () {axios.get (site_url + "get_bk_topo/?bk_biz_id=" + this.searchBkId) .then (res = > {if (res.data.result) {this.bkTopoData = res.data.data) } else {this.$message.error ('failed to acquire business');}}, 'json') }, search () {console.log ("aaa")}}) / * table header and table data center CSS * / .el-table .cell {text-align: center;} 2. Backend interface from django.views.decorators.csrf import csrf_exemptdef get_bk_topo (request): bk_biz_id = request.GET.get ("bk_biz_id") res_data = cc_search_biz_inst_topo (request, bk_biz_id) return JsonResponse ({"result": True, "data": res_data}) def get_biz_list (request): fields = ["bk_biz_id" "bk_biz_name"] data = cc_search_business (fields) return JsonResponse ({"result": True, "data": data}) def search_host (request): res_data = [] data = json.loads (request.body) bk_obj_id = data.get ("bk_obj_id") bk_inst_id = data.get ("bk_inst_id") host_data = cc_search_host (request, bk_obj_id Bk_inst_id) for h in host_data: bk_host_name = h.get ("host", {}). Get ("bk_host_name") bk_os_name = h.get ("host", {}). Get ("bk_os_name") bk_cloud_id = h.get ("host") {}) .get ("bk_cloud_id") [0] .get ("bk_inst_id") bk_cloud_name = h.get ("host", {}). Get ("bk_cloud_id") [0] .get ("bk_inst_name") bk_host_id = h.get ("host", {}). Get ("bk_host_id") bk_host_innerip = h.get ("host") Get ("bk_host_innerip") res_data.append ({"bk_host_name": bk_host_name, "bk_os_name": bk_os_name, "bk_cloud_id": bk_cloud_id, "bk_cloud_name": bk_cloud_name, "bk_host_id": bk_host_id "bk_host_innerip": bk_host_innerip,}) return JsonResponse ({"result": True, "data": res_data})

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