Angular使用Restful的增删改
编程学习 2021-07-04 15:50www.dzhlxh.cn编程入门
今天长沙网络推广就为大家分享一篇关于Angular使用Restful的增删改，长沙网络推广觉得内容挺不错的，现在分享给大家，具有很好的参考价值，需要的朋友一起跟随长沙网络推广来看看吧
这篇来看一下如何进行增删改。
删除
使用delete进行删除，一般页面设计的时候也基本都是在列表页进行操作的。首先为删除的链接添加一个函数，因为一般删除都需要传入可定位删除的id或者name，前提是后端api是否支持，查看如下的调用之后，可以看到：
所以，只需要method使用delete，在传入的url中指定id或者name即可。
删除的restful调用：
模版修改
html页面做如下修改
<a nz-tooltip nzTitle="Delete" (click)="handleDeleteFunc()"><i class="anticon anticon-minus-circle-o"></i></a>
添加click处理函数
添加页面定义的click处理函数handleDeleteFunc：
handleDeleteFunc(apiName) {
this._actionInformation = 'Delete';
this.isSpinning = true;
this.modalService.confirm({
nzTitle : '<i>Are you sure to delete this item selected?</i>',
nzContent: '<b>The api selected will be deleted.</b>',
nzOnOk : () => {
this.http.delete('/apis/' + apiName.toString()).subscribe(
item => {
this.isSpinning = false;
this._getApis();
}
);
}
});
}
添加&更新&查看
其他操作诸如添加/更新/查看, 这样基本上get/delete/post/put都进行了使用
TS文件
import { Component, OnInit } from '@angular/core';
import {HttpClient, HttpHeaders} from '@angular/common/http';
import { NzModalService } from 'ng-zorro-antd';
export class ApiModel {
created_at: string;
strip_uri: boolean;
id: string;
hosts: [''];
name: string;
http_if_terminated: boolean;
https_only: boolean;
retries: number;
preserve_host: boolean;
upstream_connect_timeout: number;
upstream_read_timeout: number;
upstream_send_timeout: number;
upstream_url: string;
}
@Component({
selector: 'app-rest-demo',
templateUrl: './rest-demo.component.html',
styleUrls: ['./rest-demo.component.css']
})
export class RestDemoComponent implements OnInit {
dataModel = [];
isModalVisible = false;
_actionInformation: string;
_dataSelected: ApiModel;
isSpinning = true;
public httpOptions = {
headers: new HttpHeaders({ 'Content-Type': 'application/json' })
};
constructor(private http: HttpClient,
private modalService: NzModalService) {
}
ngOnInit() {
this._getApis();
this._initData();
}
_initData() {
this._dataSelected = new ApiModel();
this._dataSelected.upstream_connect_timeout = 6000;
this._dataSelected.retries = 5;
}
_getApis() {
this.isSpinning = true;
this.http.get('/apis').subscribe(
item => {
this.dataModel = item['data'];
this.isSpinning = false;
}
);
}
handleAddFunc() {
this._actionInformation = 'Add';
this.isModalVisible = true;
}
handleSearchFunc(apiName) {
this._actionInformation = 'Search';
this.http.get('/apis/' + apiName).subscribe(
item => {
this._dataSelected = <ApiModel> item;
this.isSpinning = false;
}
);
this.isModalVisible = true;
}
handleDeleteFunc(apiName) {
this._actionInformation = 'Delete';
this.isSpinning = true;
this.modalService.confirm({
nzTitle : '<i>Are you sure to delete this item selected?</i>',
nzContent: '<b>The api selected will be deleted.</b>',
nzOnOk : () => {
this.http.delete('/apis/' + apiName.toString()).subscribe(
item => {
this.isSpinning = false;
this._getApis();
}
);
}
});
}
handleEditeFunc(apiName) {
this._actionInformation = 'Edit';
this.http.get('/apis/' + apiName).subscribe(
item => {
this._dataSelected = <ApiModel> item;
this.isSpinning = false;
}
);
this.isModalVisible = true;
}
handleOperationCancel() {
this.isModalVisible = false;
}
handleOperationOk() {
this.isSpinning = true;
this.isModalVisible = false;
if (this._actionInformation === 'Add') {
this.http.post('/apis/', JSON.stringify(this._dataSelected), this.httpOptions).subscribe( item => {
this.isSpinning = false;
this._getApis();
});
} else if (this._actionInformation === 'Edit') {
this.http.put('/apis/', JSON.stringify(this._dataSelected), this.httpOptions).subscribe( item => {
this.isSpinning = false;
this._getApis();
});
} else if (this._actionInformation === 'Search') {
}
}
}
HTML模版
<div style="display:inline-block;width: 50%;">
<nz-breadcrumb style="line-height: 40px; vertical-align: middle">
<nz-breadcrumb-item>Operations</nz-breadcrumb-item>
<nz-breadcrumb-item>Apis</nz-breadcrumb-item>
</nz-breadcrumb>
</div>
<div style="display:inline-block;width: 45%;text-align: right;margin-right: 5%; line-height: 40px; font-size: xx-large">
<a nz-tooltip nzTitle="Add" (click)="handleAddFunc()"> <i style="text-align: right" class="anticon anticon-plus-circle-o"></i> </a>
</div>
<br>
<nz-table #dataSource [nzData]="dataModel">
<thead>
<tr>
<th>Name</th>
<th>Host</th>
<th>Https only</th>
<th>Retry Cnt</th>
<th>Upstream url</th>
<th>Created</th>
<th>Operation</th>
</tr>
</thead>
<tbody>
<tr *ngFor="let data of dataSource.data">
<td>{{data.name}}</td>
<td>{{data.hosts}}</td>
<td>{{data.https_only}}</td>
<td>{{data.retries}}</td>
<td>{{data.upstream_url}}</td>
<td>{{data.created_at | date:'yyyy/MM/dd HH:MM:SS'}}</td>
<td>
<a nz-tooltip nzTitle="Delete" (click)="handleDeleteFunc(data.name)"><i class="anticon anticon-minus-circle-o"></i></a>
<nz-divider nzType="vertical">|</nz-divider>
<a nz-tooltip nzTitle="Update" (click)="handleEditeFunc(data.name)"><i class="anticon anticon-edit"></i></a>
<nz-divider nzType="vertical">|</nz-divider>
<a nz-tooltip nzTitle="Retrieve" (click)="handleSearchFunc(data.name)"><i class="anticon anticon-exclamation-circle-o"></i></a>
</td>
</tr>
</tbody>
</nz-table>
<nz-modal nzWrapClassName="vertical-center-modal" [(nzVisible)]="isModalVisible" nzTitle="Api Detail (Operation: {{_actionInformation}})" (nzOnCancel)="handleOperationCancel()" (nzOnOk)="handleOperationOk()">
<form nz-form>
<nz-form-item>
<nz-form-label nzRequired [nzSpan]="3" nzFor="id-api-name">Name</nz-form-label>
<nz-form-control [nzSpan]="9">
<input nz-input name='id-api-name' id='id-api-name' [(ngModel)]=_dataSelected.name>
</nz-form-control>
<nz-form-label [nzSpan]="3" nzFor="id-api-host">Host</nz-form-label>
<nz-form-control [nzSpan]="9">
<input nz-input name="id-api-host" id="id-api-host" [(ngModel)]='_dataSelected.hosts'>
</nz-form-control>
</nz-form-item >
<nz-form-item>
<nz-col [nzSpan]="3" >
</nz-col>
<nz-col [nzSpan]="9">
<label name="id-api-https" nz-checkbox [(ngModel)]="_dataSelected.https_only">Https
</label>
</nz-col>
<nz-form-label [nzSpan]="3" nzFor="id-api-retry">Retry</nz-form-label>
<nz-form-control [nzSpan]="9">
<input nz-input id="id-api-retry" name="id-api-retry" [(ngModel)]="_dataSelected.retries">
</nz-form-control>
</nz-form-item >
<nz-form-item>
<nz-form-label [nzSpan]="3" nzFor="id-api-url">Url</nz-form-label>
<nz-form-control [nzSpan]="21">
<input nz-input id="id-api-url" name="id-api-url" [(ngModel)]="_dataSelected.upstream_url">
</nz-form-control>
</nz-form-item >
</form>
</nz-modal>
总结
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