使用angular4和asp.net core 2 web api做个练习项目(二), 这部分都是angular
上一篇: http://www.cnblogs.com/cgzl/p/7755801.html
完成client.service.ts:
import { Injectable } from '@angular/core';
import { Http, Headers } from '@angular/http';
import { Observable } from 'rxjs/Observable';
import { ErrorHandler } from '@angular/core';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
import 'rxjs/add/observable/throw';
import { Client } from '../models/Client';
@Injectable()
export class ClientService {
private url = 'http://localhost:5001/api/client';
private headers = new Headers({ 'Content-Type': 'application/json' });
constructor(private http: Http) { }
getAll(): Observable<Client[]> {
return this.http.get(this.url)
.map(response => response.json() as Client[]);
}
getOne(id: number): Observable<Client> {
return this.http.get(`${this.url}/${id}`)
.map(response => response.json() as Client);
}
create(client: Client) {
return this.http.post(this.url, JSON.stringify(client), { headers: this.headers })
.map(response => response.json())
.catch(this.handleError);
}
update(client: Client) {
return this.http.patch(`${this.url}/${client.id}`, JSON.stringify(client), { headers: this.headers })
.map(response => response.json())
.catch(this.handleError);
}
delete(id: number) {
return this.http.delete(`${this.url}/${id}`)
.map(response => response.json())
.catch(this.handleError);
}
private handleError(error: Response) {
if (error.status === 400) {
return Observable.throw('Bad Request');
}
if (error.status === 404) {
return Observable.throw('Not Found');
}
return Observable.throw('Error Occurred');
}
}
我个人比较喜欢 observable的方式而不是promise.
然后再Client.Component里面, 注入ClientService, 在NgOnInit里面调用查询方法:
import { Component, OnInit } from '@angular/core';
import { ClientService } from '../../services/client.service';
import { Client } from '../../models/Client';
@Component({
selector: 'app-clients',
templateUrl: './clients.component.html',
styleUrls: ['./clients.component.css']
})
export class ClientsComponent implements OnInit {
public clients: Client[];
constructor(private service: ClientService) { }
ngOnInit() {
this.service.getAll().subscribe(
clients => {
this.clients = clients;
console.log(this.clients);
}
);
}
}
然后修改Client.Component.html:
<table class="table table-striped" *ngIf="clients?.length > 0; else noClients"> <thead class="thead-dark"> <tr> <th>ID</th> <th>Name</th> <th>Email</th> <th>Balance</th> <th></th> </tr> </thead> <tbody> <tr *ngFor="let client of clients"> <td>{{client.id}}</td> <td>{{client.firstName + ' ' + client.lastName}}</td> <td>{{client.email}}</td> <td>{{client.balance}}</td> <td><a href="" class="btn btn-secondary btn-sm">明细</a></td> </tr> </tbody> </table> <ng-template #noClients> <hr> <h5>系统中没有客户..</h5> </ng-template>
然后把client.component放在dashboard中:
dashboard.component.html:
<app-clients></app-clients>
然后看看浏览器:
我这里还没有数据, 如果有数据的话, 将会显示一个table, header是黑色的.
使用font-awesome
npm install font-awesome --save
然后打开.angular-cli.json:
"styles": [ "styles.css", "../node_modules/bootstrap/dist/css/bootstrap.css", "../node_modules/font-awesome/css/font-awesome.css" ], "scripts": [ "../node_modules/jquery/dist/jquery.js", "../node_modules/tether/dist/js/tether.js", "../node_modules/bootstrap/dist/js/bootstrap.bundle.js" ]
重新运行ng serve
修改 client.component.html的明细按钮:
<td><a href="" class="btn btn-secondary btn-sm"><i class="fa fa-arrow-circle-o-right"></i> 明细</a></td>
然后还是使用swagger添加两条数据吧: http://localhost:5001/swagger, 现在的效果:
添加一个总计:
import { Component, OnInit } from '@angular/core';
import { ClientService } from '../../services/client.service';
import { Client } from '../../models/Client';
@Component({
selector: 'app-clients',
templateUrl: './clients.component.html',
styleUrls: ['./clients.component.css']
})
export class ClientsComponent implements OnInit {
public clients: Client[];
public total: number;
constructor(private service: ClientService) { }
ngOnInit() {
this.service.getAll().subscribe(
clients => {
this.clients = clients;
this.getTotal();
}
);
}
getTotal() {
this.total = this.clients.reduce((previous, current) => previous + current.balance, 0);
}
}
html:
<div class="row"> <div class="col-md-6"> <h2> <i class="fa fa-users">客户</i> </h2> </div> <div class="col-md-6"> <h5 class="pull-right text-muted"> 总计: {{total | currency:"USD":true}} </h5> </div> </div> <table class="table table-striped" *ngIf="clients?.length > 0; else noClients"> <thead class="thead-dark"> <tr> <th>ID</th> <th>Name</th> <th>Email</th> <th>Balance</th> <th></th> </tr> </thead> <tbody> <tr *ngFor="let client of clients"> <td>{{client.id}}</td> <td>{{client.firstName + ' ' + client.lastName}}</td> <td>{{client.email}}</td> <td>{{client.balance}}</td> <td> <a href="" class="btn btn-secondary btn-sm"> <i class="fa fa-arrow-circle-o-right"></i> 明细</a> </td> </tr> </tbody> </table> <ng-template #noClients> <hr> <h5>系统中没有客户..</h5> </ng-template>
Sidebar 侧边栏
打开sidebar.component.html:
<a routerLink="/add-client" href="#" class="btn btn-success btn-block"><i class="fa fa-plus"></i>添加新客户</a>
然后再dashboard中添加sidebar:
<div class="row"> <div class="col-md-10"> <app-clients></app-clients> </div> <div class="col-md-2"> <app-sidebar></app-sidebar> </div> </div>
添加在了右边. 效果如图:
然后需要在app.module.ts里面添加路由:
const appRoutes: Routes = [ { path: '', component: DashboardComponent }, { path: 'register', component: RegisterComponent }, { path: 'login', component: LoginComponent }, { path: 'add-client', component: AddClientComponent } ];
Add-Client 添加客户的表单:
打开add-client.component.html:
<div class="row"> <div class="col-md-6"> <a routerLink="/" href="#" class="btn btn-link"><i class="fa fa-arrow-circle-o-left"></i> 回到Dashboard </a> </div> <div class="col-md-6"> </div> </div> <div class="card"> <div class="card-header"> Add Client </div> <div class="card-body"> <form #f="ngForm" (ngSubmit)="onSubmit(f)"> <div class="form-group"> <label for="firstName">名</label> <input type="text" class="form-control" [(ngModel)]="client.firstName" name="firstName" #clientFirstName="ngModel" minlength="2" required> <div *ngIf="clientFirstName.errors.required && clientFirstName.touched" class="alter alert-danger"> 名字是必填的 </div> <div *ngIf="clientFirstName.errors.minlength && clientFirstName.touched" class="alter alert-danger"> 名字最少是两个字 </div> </div> </form> </div> </div>
现在表单里面添加一个字段, 然后在app.module里面添加FormsModule:
import { FormsModule } from '@angular/forms'; imports: [ BrowserModule, RouterModule.forRoot(appRoutes), HttpModule, FormsModule ],
现在应该是这个样子:
然后把表单都完成 add-client.component.html:
<div class="row"> <div class="col-md-6"> <a routerLink="/" href="#" class="btn btn-link"> <i class="fa fa-arrow-circle-o-left"></i> 回到Dashboard </a> </div> <div class="col-md-6"> </div> </div> <div class="card"> <div class="card-header"> 添加客户 </div> <div class="card-body"> <form #f="ngForm" (ngSubmit)="onSubmit(f)" novalidate> <div class="form-group"> <label for="firstName">名</label> <input type="text" class="form-control" [(ngModel)]="client.firstName" name="firstName" #clientFirstName="ngModel" minlength="2" required> <div *ngIf="clientFirstName.touched && clientFirstName.invalid"> <div *ngIf="clientFirstName.errors.required" class="alert alert-danger"> 名字是必填的 </div> <div *ngIf="clientFirstName.errors.minlength" class="alert alert-danger"> 名字最少是两个字 </div> </div> </div> <div class="form-group"> <label for="lastName">姓</label> <input type="text" class="form-control" [(ngModel)]="client.lastName" name="lastName" #clientLastName="ngModel" minlength="2" required> <div *ngIf="clientLastName.touched && clientLastName.invalid"> <div *ngIf="clientLastName.errors.required" class="alert alert-danger"> 姓是必填的 </div> <div *ngIf="clientLastName.errors.minlength" class="alert alert-danger"> 姓最少是两个字 </div> </div> </div> <div class="form-group"> <label for="email">Email</label> <input type="email" class="form-control" [(ngModel)]="client.email" name="email" #clientEmail="ngModel" required> <div *ngIf="clientEmail.touched && clientEmail.invalid"> <div *ngIf="clientEmail.errors.required" class="alert alert-danger"> Email是必填的 </div> </div> </div> <div class="form-group"> <label for="phone">联系电话</label> <input type="text" class="form-control" [(ngModel)]="client.phone" name="phone" #clientPhone="ngModel" minlength="10"> <div *ngIf="clientPhone.touched && clientPhone.invalid"> <div *ngIf="clientPhone.errors.minlength" class="alert alert-danger"> 电话最少是10位 </div> </div> </div> <div class="form-group"> <label for="balance">余额</label> <input type="number" class="form-control" [(ngModel)]="client.balance" name="balance" #clientBalance="ngModel" [disabled]="disableBalanceOnAdd"> </div> <input type="submit" class="btn btn-primary btn-block" value="提交"> </form> </div> </div>
现在看起来是这样:
再安装一个库: npm install --save angular2-flash-messages
这个库可以略微灵活的显示提示信息.
npm install --save angular2-flash-messages
在app.module里面:
import { FlashMessagesModule } from 'angular2-flash-messages'; imports: [ BrowserModule, RouterModule.forRoot(appRoutes), HttpModule, FormsModule, FlashMessagesModule ],
add-client.component.ts:
import { Component, OnInit } from '@angular/core';
import { FlashMessagesService } from 'angular2-flash-messages';
import { Router } from '@angular/router';
import { Client } from '../../models/Client';
@Component({
selector: 'app-add-client',
templateUrl: './add-client.component.html',
styleUrls: ['./add-client.component.css']
})
export class AddClientComponent implements OnInit {
public client: Client = {
id: 0,
firstName: '',
lastName: '',
email: '',
phone: '',
balance: 0
};
public disableBalanceOnAdd = true;
constructor(
public flashMessagesService: FlashMessagesService,
public router: Router
) { }
ngOnInit() {
}
onSubmit({ value, valid }: { value: Client, valid: boolean }) {
if (!valid) {
this.flashMessagesService.show('请正确输入表单', { cssClass: 'alert alert-danger', timeout: 4000 });
this.router.navigate(['/add-client']);
} else {
console.log('valid');
}
}
}
然后需要在某个地方放置flash messages, 打开app.component.html:
<app-navbar></app-navbar> <div class="container"> <flash-messages></flash-messages> <router-outlet></router-outlet> </div>
然后运行一下:
大约这个样子.
然后修改提交, 注入clientService, 把数据新增到web api:
import { Component, OnInit } from '@angular/core';
import { FlashMessagesService } from 'angular2-flash-messages';
import { Router } from '@angular/router';
import { Client } from '../../models/Client';
import { ClientService } from '../../services/client.service';
@Component({
selector: 'app-add-client',
templateUrl: './add-client.component.html',
styleUrls: ['./add-client.component.css']
})
export class AddClientComponent implements OnInit {
public client: Client = {
id: 0,
firstName: '',
lastName: '',
email: '',
phone: '',
balance: 0
};
public disableBalanceOnAdd = true;
constructor(
public flashMessagesService: FlashMessagesService,
public router: Router,
public clientService: ClientService
) { }
ngOnInit() {
}
onSubmit({ value, valid }: { value: Client, valid: boolean }) {
if (this.disableBalanceOnAdd) {
value.balance = 0;
}
if (!valid) {
this.flashMessagesService.show('请正确输入表单', { cssClass: 'alert alert-danger', timeout: 4000 });
this.router.navigate(['/add-client']);
} else {
this.clientService.create(value).subscribe(
client => {
console.log(client);
this.flashMessagesService.show('新客户添加成功', { cssClass: 'alert alert-success', timeout: 4000 });
this.router.navigate(['/']);
}
);
}
}
}
可以运行试试. 应该是好用的.
Client Detail 客户明细:
首先在app.module.ts里面添加路由:
const appRoutes: Routes = [ { path: '', component: DashboardComponent }, { path: 'register', component: RegisterComponent }, { path: 'login', component: LoginComponent }, { path: 'add-client', component: AddClientComponent }, { path: 'client/:id', component: ClientDetailsComponent } ];
然后在clients.componet.html修改:
<td> <a href="" [routerLink]="['/client', client.id]" class="btn btn-secondary btn-sm"> <i class="fa fa-arrow-circle-o-right"></i> 明细</a> </td>
修改client-detail.component.ts:
import { Component, OnInit } from '@angular/core';
import { ClientService } from '../../services/client.service';
import { FlashMessagesService } from 'angular2-flash-messages';
import { Router, ActivatedRoute, Params } from '@angular/router';
import { Client } from '../../models/Client';
@Component({
selector: 'app-client-details',
templateUrl: './client-details.component.html',
styleUrls: ['./client-details.component.css']
})
export class ClientDetailsComponent implements OnInit {
id: string;
client: Client;
hasBalance = false;
showBalanceUpdateInput = false;
constructor(
public clientService: ClientService,
public router: Router,
public route: ActivatedRoute,
public flashMessagesService: FlashMessagesService
) { }
ngOnInit() {
// 获取ID
this.id = this.route.snapshot.params['id'];
// 获取Client
this.clientService.getOne(+this.id).subscribe(
client => {
if (client.balance > 0) {
this.hasBalance = true;
}
this.client = client;
}
);
}
}
然后修改html:
<div class="row"> <div class="col-md-6"> <a routerLink="/" class="btn btn-link"> <i class="fa fa-arrow-circle-o-left"></i> 回到Dashboard</a> </div> <div class="col-md-6"> <div class="btn-group pull-right"> <a [routerLink]="['/edit-client', id]" class="btn btn-secondary">编辑</a> <button type="button" class="btn btn-danger" (click)="onDeleteClick()">删除</button> </div> </div> </div> <hr> <div class="card" *ngIf="client"> <div class="card-header"> <h3> {{client.firstName + ' ' + client.lastName}}</h3> </div> <div class="card-body"> <div class="row"> <div class="col-md-8"> <h4>客户ID: {{id}}</h4> </div> <div class="col-md-4"> <h4 class="pull-right"> 余额: <span [class.text-danger]="!hasBalance" [class.text-success]="hasBalance"> {{client.balance | currency: 'USD': true}} </span> <small> <a (click)="showBalanceUpdateInput = !showBalanceUpdateInput"><i class="fa fa-pencil"></i></a> </small> </h4> <div class="clearfix"> <form *ngIf="showBalanceUpdateInput" (submit)="updateBalance(id)" class="form-inline pull-right"> <div class="form-group"> <input type="number" class="form-control" name="balance" [(ngModel)]="client.balance"> </div> <button type="submit" class="btn btn-primary"> 更新 </button> </form> </div> </div> </div> <hr> <ul class="list-group"> <li class="list-group-item"> Email: {{client.email}} </li> <li class="list-group-item"> 联系电话: {{client.phone}} </li> </ul> </div> </div>
然后要做一个修改余额的动作, 这是个部分更新, 应该对应http patch.
目前client.service里没有patch, 所以需要添加一个patch方法, 不过首先建立一个PatchModel.ts:.
export interface PatchModel {
op: string;
path: string;
value: any;
}
client.service.ts:
import { PatchModel } from '../models/PatchModel';
patch(id: number, patchs: PatchModel[]) {
return this.http.patch(`${this.url}/${id}`, JSON.stringify(patchs), { headers: this.headers })
.map(response => response.json())
.catch(this.handleError);
}
然后修改 client-detail.component.ts:
import { PatchModel } from '../../models/PatchModel';
updateBalance(id: string) {
// 更新客户的余额
this.clientService.patch(+id, [{ op: 'replace', path: '/balance', value: this.client.balance }])
.subscribe(() => {
this.showBalanceUpdateInput = false;
this.flashMessagesService.show('更新余额成功', { cssClass: 'alert alert-success', timeout: 4000 });
});
}
运行一下, 应该好用:
删除动作:
onDeleteClick() { if (confirm('确定要删除?')) { this.clientService.delete(+this.id).subscribe(() => { this.flashMessagesService.show('客户删除成功', { cssClass: 'alert alert-success', timeout: 4000 }); this.router.navigate(['/']); }); } }
应该好用, 删除后跳转到dashboard.
编辑客户 Edit-Client
先添加路由 app.module.ts:
const appRoutes: Routes = [ { path: '', component: DashboardComponent }, { path: 'register', component: RegisterComponent }, { path: 'login', component: LoginComponent }, { path: 'add-client', component: AddClientComponent }, { path: 'client/:id', component: ClientDetailsComponent }, { path: 'edit-client/:id', component: EditClientComponent } ];
然后修改edit-client.component.html:
<div class="row"> <div class="col-md-6"> <a [routerLink]="['/client', id]" href="#" class="btn btn-link"> <i class="fa fa-arrow-circle-o-left"></i> 回到客户明细 </a> </div> <div class="col-md-6"> </div> </div> <div class="card"> <div class="card-header"> 编辑客户 </div> <div class="card-body"> <form #f="ngForm" (ngSubmit)="onSubmit(f)" *ngIf="client" novalidate> <div class="form-group"> <label for="firstName">名</label> <input type="text" class="form-control" [(ngModel)]="client.firstName" name="firstName" #clientFirstName="ngModel" minlength="2" required> <div *ngIf="clientFirstName.touched && clientFirstName.invalid"> <div *ngIf="clientFirstName.errors.required" class="alert alert-danger"> 名字是必填的 </div> <div *ngIf="clientFirstName.errors.minlength" class="alert alert-danger"> 名字最少是两个字 </div> </div> </div> <div class="form-group"> <label for="lastName">姓</label> <input type="text" class="form-control" [(ngModel)]="client.lastName" name="lastName" #clientLastName="ngModel" minlength="2" required> <div *ngIf="clientLastName.touched && clientLastName.invalid"> <div *ngIf="clientLastName.errors.required" class="alert alert-danger"> 姓是必填的 </div> <div *ngIf="clientLastName.errors.minlength" class="alert alert-danger"> 姓最少是两个字 </div> </div> </div> <div class="form-group"> <label for="email">Email</label> <input type="email" class="form-control" [(ngModel)]="client.email" name="email" #clientEmail="ngModel" required> <div *ngIf="clientEmail.touched && clientEmail.invalid"> <div *ngIf="clientEmail.errors.required" class="alert alert-danger"> Email是必填的 </div> </div> </div> <div class="form-group"> <label for="phone">联系电话</label> <input type="text" class="form-control" [(ngModel)]="client.phone" name="phone" #clientPhone="ngModel" minlength="10"> <div *ngIf="clientPhone.touched && clientPhone.invalid"> <div *ngIf="clientPhone.errors.minlength" class="alert alert-danger"> 电话最少是10位 </div> </div> </div> <div class="form-group"> <label for="balance">余额</label> <input type="number" class="form-control" [(ngModel)]="client.balance" name="balance" #clientBalance="ngModel" [disabled]="disableBalanceOnEdit"> </div> <input type="submit" class="btn btn-primary btn-block" value="提交"> </form> </div> </div>
修改edit-client.component.ts:
import { Component, OnInit } from '@angular/core';
import { ClientService } from '../../services/client.service';
import { FlashMessagesService } from 'angular2-flash-messages';
import { Router, ActivatedRoute, Params } from '@angular/router';
import { Client } from '../../models/Client';
@Component({
selector: 'app-edit-client',
templateUrl: './edit-client.component.html',
styleUrls: ['./edit-client.component.css']
})
export class EditClientComponent implements OnInit {
id: string;
client: Client;
disableBalanceOnEdit = true;
constructor(
public clientService: ClientService,
public router: Router,
public route: ActivatedRoute,
public flashMessagesService: FlashMessagesService
) { }
ngOnInit() {
// 获取ID
this.id = this.route.snapshot.params['id'];
// 获取Client
this.clientService.getOne(+this.id).subscribe(
client => {
this.client = client;
}
);
}
onSubmit({ value, valid }: { value: Client, valid: boolean }) {
if (!valid) {
this.flashMessagesService.show('请正确输入表单', { cssClass: 'alert alert-danger', timeout: 4000 });
this.router.navigate(['/edit-client', this.id]);
} else {
this.clientService.update(+this.id, value).subscribe(
client => {
console.log(client);
this.flashMessagesService.show('更新客户成功', { cssClass: 'alert alert-success', timeout: 4000 });
this.router.navigate(['/client', this.id]);
}
);
}
}
}
client.service.ts需要修改一下, 之前的update方法写的不正确也不符合规范:
update(id: number, client: Client) { return this.http.put(`${this.url}/${id}`, JSON.stringify(client), { headers: this.headers }) .map(response => response.json()) .catch(this.handleError); }
然后运行, 好用.
先写到这, 估计还得写一篇, 下一篇文章里面要使用identity server 4了, implicit grant flow.
