问题描述
我在Angular7中使用devextreme的CustomStore。我正在调用两个API
- https://*****.execute-api.us-east-1.amazonaws.com/POD/cost
- https://*****.execute-api.us-east-1.amazonaws.com/POD/costApi
在获得第一个api的响应时,这里需要每5秒调用第二个api,最多3次。我试图将第二个api放在setTimeout块中并每5秒钟调用一次,但响应未附加到CustomSotre。
我尝试了多种选择来实现这一目标,但运气还不是。
从“ devextreme / data / custom_store”导入CustomStore; 请在下面找到示例代码
// using tableDataSource as datasource in datagrid
this.tableDataSource.store = new CustomStore({
key: 'index',load: async function (loadOptions: any) {
let params: HttpParams = new HttpParams();
let newmrodata: any ={};
self.dataGridParams = newmrodata;
httpVerb = 'POST';
self.dataGridParams = self.tableParams;
}
let res;
const req = await self.costDataService.getTableDataForCost(httpVerb,self.loadUrl,self.dataGridParams)
.toPromise()
.then((result: any) => {
res = self.httpClient.post(self.allUrl + 'read-records',{
'connectionId': 1,'schemaName': "userCountDb ",'tableName': 'sqs_api','user_email': sessionStorage.getItem('username')
})
.toPromise()
.then((result: any) => {
if(result['totalCount'] !== undefined && result['totalCount'] !== null) {
return {
data: result['data'] ? result['data'] : [{ Error: JSON.stringify(result) }],totalCount: result['totalCount'] ? result['totalCount'] : 0
};
}
});
});
return res;
},update: (key,values) => self
});
解决方法
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