小编Eug*_*ukh的帖子

我的 Angular 组件中有返回数据的方法

这是这个方法

 getRecognitionById() {
    this.loaderService.show(null, true);
    forkJoin(
      this.vendorWebApiService.getRecognitionById(this.executiveChangeId),
      this.vendorWebApiService.getLatestFeedback(this.executiveChangeId)).pipe(take(1))
      .subscribe(res => {
        this.recognitionData = res[0];
        this.latestFeedback = res[1];
        this.generateResponseFeedbackGroup();
        this.loaderService.hide(true);
      });
  }

我需要检查 8 秒内是否没有响应，提醒用户alert(response.exceptionMessage);

我怎样才能做到这一点？

我有Angular组件

这是代码

    @Component({
  selector: 'app-testcomponent',
  templateUrl: './testcomponent.component.html',
  styleUrls: ['./testcomponent.component.scss']
})
export class TestcomponentComponent implements OnInit {

  version: string = environment.version;
  error: string;
  searchForm: FormGroup;

  constructor(
    private formBuilder: FormBuilder,
    private http: HttpClient
    ) {
    this.createForm();
   }

  ngOnInit() {}

  search() {
    this.http.get('https://api.chucknorris.io/jokes/search?query='+this.searchForm.value.jokevalue ).subscribe(
    data => [
      console.log(data)
    ])
  }

  private createForm() {
    this.searchForm = this.formBuilder.group({
      jokevalue: ['', Validators.required],
    });
  }
}

函数search()与从API获取值并为提交按钮上的数组中的每个元素制作html标记相关.这是模板html

<div class="container-fluid">
  <form class="form-inline" (ngSubmit)="search()" [formGroup]="searchForm" novalidate>
      <label for="text">Enter value:</label>
      <input formControlName="jokevalue" style="margin-left:20px;" type="text" class="form-control" id="email">
      <button style="margin-left:20px;" …

我需要通过提交按钮从API获取数据

这是网址-https : //api.chucknorris.io/jokes/search ? query = ******

*****是来自输入的值

这是API的回应

{
"total": 1,
"result": [
    {
        "category": null,
        "icon_url": "https://assets.chucknorris.host/img/avatar/chuck-norris.png",
        "id": "cq6hLP0ETeW4VSrm7SYg5A",
        "url": "https://api.chucknorris.io/jokes/cq6hLP0ETeW4VSrm7SYg5A",
        "value": "Chuck Norris knows WAZZZUP!"
    }
]

}

我需要从结果中获取价值并将其显示在View中

如您所见，它是一个对象，而不是array。

我试图这样

模板代码

<div class="container-fluid">
  <form class="form-inline" (ngSubmit)="search()" [formGroup]="searchForm" novalidate>
      <label for="text">Enter value:</label>
      <input formControlName="jokevalue" style="margin-left:20px;" type="text" class="form-control" id="email">
      <button style="margin-left:20px;" type="submit" class="btn btn-primary">Submit</button>
  </form>
  <div style="background: black; height: 60px;" *ngFor="let joke of jokes;index as i">
      <p style="color: white">{{i}}</p>
      <p style="color: white">{{joke.result[i].value}}</p>
  </div>

组件代码

   import …

我使用了 Angular 的材质对话框，我需要在其中输入标题并选择批准或拒绝变体。

这里的组件代码

  import {Component, Inject, OnInit} from '@angular/core';
import {MAT_DIALOG_DATA, MatDialogRef} from "@angular/material";
import {FormBuilder, Validators, FormGroup} from "@angular/forms";
import { Payment } from '../payments/payment';


@Component({
    selector: 'editing-dialog',
    templateUrl: './editing-dialog.component.html',
    styleUrls: ['./editing-dialog.component.scss']
})
export class EditingDialogComponent implements OnInit {
    form: FormGroup;
    reason:String;
    id: Number;
    statusdescription: String;

    constructor(
        fb: FormBuilder,
        private dialogRef: MatDialogRef<EditingDialogComponent>,
        @Inject(MAT_DIALOG_DATA) data:Payment) {
            this.reason = data.Reason;
            this.id  = data.Id;
            this.statusdescription = data.StatusDescription;
            this.form = fb.group({
                reason: [this.reason, Validators.maxLength(5)],
                id: this.id,
                status: status
            });
    }

    ngOnInit() { …

我有sql server脚本,我需要转换为Redshift

这是我遇到问题的代码的一部分

IIF(smf.channelid IS NULL, 0, 1) AS IsFeatureKey,
IIF(codeLabel.CslId > 0, 1, 0) AS IsCslCode,
IIF(codeLabel.LearnId > 0, 1, 0) AS IsLearnCode,
IIF(codeLabel.PMId > 0, 1, 0) AS IsPMCode,
IIF(codeLabel.UpSell > 0, 1, 0) AS IsUpSell

我怎样才能正确地将它转换为Redshift？

我有需要下载文件并转换为 Base64 字符串的 url

我写了这段代码来做到这一点

private string GetImageAsBase64(string url)
    {
        using (var client = new WebClient())
        {
            var bytes = client.DownloadData(url);
            var base64String = Convert.ToBase64String(bytes);
            return base64String;
        }
    }

如何使其异步使用返回类型Task<string>？

我有方法，要检查房东的数目？房东类型

我有这段代码来检查它

var type = _landlordTypeRepository.GetAll()
    .Include(x => x.Landlords)
    .FirstOrDefault(x => x.Id == input.Id);

if (type.Landlords.Count > 0)
{
    throw new UserFriendlyException(L("ThisTypeIsInUse"));
}

但是我这样改写了

var type = _landlordTypeRepository
    .GetAll()
    .AnyAsync(x=> x.Id == input.Id && x.Landlords.Any());

但是现在返回类型ID Task<bool>

如果我该如何使用呢？

我有一个从后端获取数据的 Angular 组件。

这是组件的代码

 export class MessagesComponent implements OnInit {
  constructor(private _router: Router, private http: HttpClient) {
  }
  timer: any;
  chats: any;
  autoresize: boolean = false;
  chatId: number;
  moment: any = moment;
  chatMessages: any;
  messageToSend: string;
  messageObject: CreateMessageDto = new CreateMessageDto();
  ngOnInit(): void {
    this.getChatsList();

  }


  getChatsList(): any {
    var reqHeader = new HttpHeaders({
      'Content-Type': 'application/json',
      Authorization: 'Bearer ' + localStorage.getItem('jwt'),
    });
    return this.http
      .get(environment.baseUrl + '/Chat/GetUserChats', {
        headers: reqHeader,
      })
      .subscribe((data: any) => {
        this.chats = data.reverse();
        this.getChatId(data[0].id);
      }); …