{"id":39405,"date":"2022-12-13T17:13:35","date_gmt":"2023-08-17T10:59:44","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8angular%e7%bb%84%e4%bb%b6%ef%bc%88sample2-template-driven-form%ef%bc%89%e8%bf%9b%e8%a1%8c%e6%b5%8b%e8%af%95%e7%9a%84%e6%96%b9%e6%b3%95%e3%80%82%e6%b5%8b%e8%af%95angular%e7%bb%84\/"},"modified":"2024-04-29T05:07:41","modified_gmt":"2024-04-28T21:07:41","slug":"%e4%bd%bf%e7%94%a8angular%e7%bb%84%e4%bb%b6%ef%bc%88sample2-template-driven-form%ef%bc%89%e8%bf%9b%e8%a1%8c%e6%b5%8b%e8%af%95%e7%9a%84%e6%96%b9%e6%b3%95%e3%80%82%e6%b5%8b%e8%af%95angular%e7%bb%84","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8angular%e7%bb%84%e4%bb%b6%ef%bc%88sample2-template-driven-form%ef%bc%89%e8%bf%9b%e8%a1%8c%e6%b5%8b%e8%af%95%e7%9a%84%e6%96%b9%e6%b3%95%e3%80%82%e6%b5%8b%e8%af%95angular%e7%bb%84\/","title":{"rendered":"\u4f7f\u7528Angular\u7ec4\u4ef6\uff08sample2 \/ Template driven Form\uff09\u8fdb\u884c\u6d4b\u8bd5\u7684\u65b9\u6cd5\u3002\u6d4b\u8bd5Angular\u7ec4\u4ef6\uff08\u4f7f\u7528sample2 \/ \u6a21\u677f\u9a71\u52a8\u8868\u5355\uff09\u7684\u65b9\u6cd5"},"content":{"rendered":"

\u76ee\u5f55\uff1aAngular \u7ec4\u4ef6\u7684\u6d4b\u8bd5<\/p>\n

\n

\u5728Angular\u4e2d\uff0c\u6709\u51e0\u79cd\u5b9e\u73b0\u8868\u5355\u7684\u65b9\u6cd5\uff0c\u4f46\u5728\u672c\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u57fa\u672c\u7684\u57fa\u4e8e\u6a21\u677f\u7684\u8868\u5355\u7684\u6d4b\u8bd5\u65b9\u6cd5\u3002<\/p>\n

\u6a21\u677f\u9a71\u52a8\u8868\u5355\u662fAngular\u4e2d\u7684\u4e00\u79cd\u8868\u5355\u5904\u7406\u65b9\u5f0f\u3002\u5b83\u53ef\u4ee5\u4f7f\u7528\u6a21\u677f\u6765\u5b9a\u4e49\u8868\u5355\u7684\u7ed3\u6784\u548c\u9a8c\u8bc1\u89c4\u5219\u3002\u5177\u4f53\u7684\u4f7f\u7528\u65b9\u6cd5\u53ef\u4ee5\u5728Angular\u7684\u5b98\u65b9\u6587\u6863\u4e2d\u627e\u5230\u3002<\/p><\/blockquote>\n

\u672c\u6587\u53c2\u8003\u81ea\u4e0b\u5217\u6d4b\u8bd5\u4ee3\u7801\u3002<\/p>\n

Angular v5.2.8 \u6a21\u677f\u96c6\u6210\u6d4b\u8bd5\u4ee3\u7801
\nhttps:\/\/github.com\/angular\/angular\/blob\/5.2.8\/packages\/forms\/test\/template_integration_spec.ts<\/p><\/blockquote>\n

\u521b\u5efa\u7ec4\u4ef6<\/h1>\n

\u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u7f16\u5199\u6d4b\u8bd5\u7684\u7ec4\u4ef6\u3002<\/p>\n

$ <\/span>ng generate component sample2\r\n<\/code><\/pre>\n
\u5728\u521b\u5efa\u7684\u7a7a\u7ec4\u4ef6\u4e2d\uff0c\u8bbe\u7f6e\u4ee5\u4e0b\u6a21\u677f\u548c\u5c5e\u6027\u3002
\nHTML\u5143\u7d20\u4e0e\u4e0a\u4e00\u7ae0\u4e2d\u7684Sample1Component\u76f8\u540c\uff0c\u4f46\u6709\u4e00\u4e2a\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u5c06\u6574\u4e2a\u5143\u7d20\u7528<\/p>\n
\u6807\u7b7e\u5305\u56f4\u8d77\u6765\u3002<\/p>\n
\/\/ sample2.component.ts<\/span>\r\n\r\nimport<\/span> {<\/span> Component<\/span>,<\/span> OnInit<\/span> }<\/span> from<\/span> '<\/span>@angular\/core<\/span>'<\/span>;<\/span>\r\n\r\n@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> '<\/span>app-sample2<\/span>'<\/span>,<\/span>\r\n  templateUrl<\/span>:<\/span> '<\/span>.\/sample2.component.html<\/span>'<\/span>,<\/span>\r\n  styleUrls<\/span>:<\/span> [<\/span>'<\/span>.\/sample2.component.css<\/span>'<\/span>]<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> Sample2Component<\/span> implements<\/span> OnInit<\/span> {<\/span>\r\n  id<\/span>:<\/span> number<\/span>;<\/span>\r\n  name<\/span>:<\/span> string<\/span>;<\/span>\r\n  agreement<\/span>:<\/span> boolean<\/span>;<\/span>\r\n  gender<\/span>:<\/span> string<\/span>;<\/span>\r\n  works<\/span> =<\/span> [<\/span>\r\n    {<\/span> id<\/span>:<\/span> '<\/span>employee<\/span>'<\/span>,<\/span> label<\/span>:<\/span> '<\/span>\u4f1a\u793e\u54e1<\/span>'<\/span> },<\/span>\r\n    {<\/span> id<\/span>:<\/span> '<\/span>student<\/span>'<\/span>,<\/span> label<\/span>:<\/span> '<\/span>\u5b66\u751f<\/span>'<\/span> },<\/span>\r\n    {<\/span> id<\/span>:<\/span> '<\/span>other<\/span>'<\/span>,<\/span> label<\/span>:<\/span> '<\/span>\u305d\u306e\u4ed6<\/span>'<\/span> },<\/span>\r\n  ];<\/span>\r\n  work<\/span>:<\/span> {<\/span> [<\/span>key<\/span>:<\/span> string<\/span>]:<\/span> string<\/span> };<\/span>\r\n  note<\/span>:<\/span> string<\/span>;<\/span>\r\n\r\n  ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\/\/ sample2.component.html\r\n\r\n<form><\/span>\r\n  <span<\/span> name=<\/span>\"id\"<\/span>><\/span>{{id}}<\/span><\/span>\r\n\r\n  <input<\/span> name=<\/span>\"name\"<\/span> type=<\/span>\"text\"<\/span> [(ngModel)]=<\/span>\"name\"<\/span>><\/span>\r\n\r\n  <input<\/span> type=<\/span>\"checkbox\"<\/span> name=<\/span>\"agreement\"<\/span> [(ngModel)]=<\/span>\"agreement\"<\/span>><\/span>\r\n\r\n  <input<\/span> type=<\/span>\"radio\"<\/span> name=<\/span>\"gender\"<\/span> value=<\/span>\"male\"<\/span> [(ngModel)]=<\/span>\"gender\"<\/span>><\/span>\u7537\r\n  <input<\/span> type=<\/span>\"radio\"<\/span> name=<\/span>\"gender\"<\/span> value=<\/span>\"female\"<\/span> [(ngModel)]=<\/span>\"gender\"<\/span>><\/span>\u5973\r\n\r\n  <select<\/span> name=<\/span>\"work\"<\/span> [(ngModel)]=<\/span>\"work\"<\/span>><\/span>\r\n    <option<\/span> *ngFor=<\/span>\"let item of works\"<\/span> [ngValue]=<\/span>\"item\"<\/span>><\/span>{{item.label}}<\/option><\/span>\r\n  <\/select><\/span>\r\n\r\n  <textarea<\/span> name=<\/span>\"note\"<\/span> [(ngModel)]=<\/span>\"note\"<\/span>><\/textarea><\/span>\r\n<\/form><\/span>\r\n<\/code><\/pre>\n
\/\/ app.module.ts\r\n\r\n+ import { FormsModule } from '@angular\/forms';\r\n\r\n@NgModule({\r\n  declarations: [\r\n    ...\r\n  ],\r\n  imports: [\r\n+    FormsModule,\r\n  ],\r\n  ...\r\n<\/code><\/pre>\n
\u4e3a\u8fdb\u884c\u7ec4\u4ef6\u6d4b\u8bd5\u505a\u51c6\u5907\u3002<\/h1>\n
\u8868\u5355\u4e2d\u4f7f\u7528\u4e86ngForm\u6307\u4ee4\uff0c\u8be5\u6307\u4ee4\u5728\u6a21\u677f\u4e2d\u5b9a\u4e49\u3002
\n\u7531\u4e8e\u8fd9\u4e9b\u6307\u4ee4\u662f\u5728FormsModule\u4e2d\u5b9a\u4e49\u7684\uff0c\u56e0\u6b64\u5728\u6d4b\u8bd5\u73af\u5883\u4e2d\u4e5f\u9700\u8981\u52a0\u8f7d\u8be5\u6a21\u5757\u3002<\/p>\n
Angular v5.2.8 form_providers.ts
\nhttps:\/\/github.com\/angular\/angular\/blob\/5.2.8\/packages\/forms\/src\/form_providers.ts#L16-L24
\nhttps:\/\/github.com\/angular\/angular\/blob\/5.2.8\/packages\/forms\/src\/directives.ts#L68<\/p>\n
Angular v5.2.8 form_providers.ts
\nhttps:\/\/github.com\/angular\/angular\/blob\/5.2.8\/packages\/forms\/src\/form_providers.ts \u7b2c16\u884c\u81f3\u7b2c24\u884c
\nhttps:\/\/github.com\/angular\/angular\/blob\/5.2.8\/packages\/forms\/src\/directives.ts \u7b2c68\u884c<\/p><\/blockquote>\n
\/\/<\/span> sample2.component.spec.ts\r\n\r\nimport {\r\n  async,\r\n  ComponentFixture,\r\n+  fakeAsync,\r\n<\/span>  TestBed,\r\n+  tick\r\n<\/span>}<\/span> from '@angular\/core\/testing';\r\n\r\n+ import {\r\n+   FormsModule,\r\n+   NgForm\r\n+ } from '@angular\/forms';\r\n<\/span>\r\n+ import { By } from '@angular\/platform-browser';\r\n\r\ndescribe('Sample2Component', () => {\r\n  let component: Sample2Component;\r\n  let fixture: ComponentFixture<Sample2Component>;\r\n\r\n  beforeEach(async(() => {\r\n    TestBed.configureTestingModule({\r\n+      imports: [FormsModule],\r\n<\/span>      declarations: [ Sample2Component ]\r\n    })\r\n    .compileComponents();\r\n  }));\r\n<\/code><\/pre>\n
\u9a8c\u8bc1\u7ec4\u4ef6\u7684\u5c5e\u6027\u662f\u5426\u5728\u6a21\u677f\u4e2d\u53cd\u6620\u51fa\u6765<\/h1>\n
\u6211\u5c06\u4f7f\u7528\u6dfb\u52a0\u5230\u6a21\u677f\u7684\u6765\u8fdb\u884c\u9a8c\u8bc1\u3002<\/p>\n
\/\/<\/span> sample2.component.spec.ts\r\n\r\n  beforeEach(() => {\r\n    fixture = TestBed.createComponent(Sample2Component);\r\n    component = fixture.componentInstance;\r\n-    fixture.detectChanges(); \/\/ \u2460\r\n<\/span>  });\r\n\r\n  ...\r\n\r\n+  it('input - \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u30d5\u30a9\u30fc\u30e0\u306b\u53cd\u6620\u3055\u308c\u308b', fakeAsync(() => {\r\n+    component.name = 'abc'; \/\/ \u2461\r\n+    fixture.detectChanges(); \/\/ \u2462\r\n+    tick();\r\n+\r\n+    const element = fixture.debugElement.query(By.css('[name=name]')).nativeElement as HTMLInputElement;\r\n+    expect(element.value).toBe('abc');\r\n+  }));\r\n<\/span><\/code><\/pre>\n
\u8fd9\u4e2a\u4e5f\u548c\u5728 Sample1Component \u4e2d\u5199\u7684\u6d4b\u8bd5\u51e0\u4e4e\u662f\u4e00\u6837\u7684\uff0c\u53ea\u6709\u4e00\u4e2a\u4e0d\u540c\u4e4b\u5904\u3002
\n\u5728 beforeEach \u4e2d\u8c03\u7528 fixture.detectChanges() \u540e\uff08\u2460\uff09\uff0c\u4fee\u6539\u4e86\u7ec4\u4ef6\u7684\u5c5e\u6027\uff08\u2461\uff09\uff0c\u518d\u6b21\u8c03\u7528 fixture.detectChanges() \u540e\uff08\u2462\uff09\uff0c\u6a21\u677f\u6ca1\u6709\u66f4\u65b0\u3002
\n\u56e0\u6b64\uff0c\u6211\u4eec\u5c06 fixture.detectChanges() \u7684\u8c03\u7528\u65b9\u5f0f\u4fee\u6539\u4e3a\u53ea\u5728\u6d4b\u8bd5\u5957\u4ef6\u5185\u90e8\u8c03\u7528\u3002<\/p>\n
\u901a\u8fc7\u8868\u5355\u8fdb\u884c\u9a8c\u8bc1<\/h2>\n
\u5982\u679c\u5728\u6a21\u677f\u4e2d\u4f7f\u7528<\/p>\n<\/form>\n\u6807\u7b7e\uff0cAngular\u4f1a\u81ea\u52a8\u5e94\u7528NgForm\u6307\u4ee4\u3002
\n\u5728\u6a21\u677f\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<\/form>\n\u6765\u5f15\u7528\u4e0eNgForm\u6307\u4ee4\u76f8\u5173\u8054\u7684\u7c7b\u5b9e\u4f8b\u3002
\n\u5982\u679c\u60f3\u8981\u5728\u6d4b\u8bd5\u4ee3\u7801\u4e2d\u5f15\u7528\u76f8\u540c\u7684\u8868\u5355\uff0c\u53ef\u4ee5\u4f7f\u7528injector\u3002<\/p>\n
\/\/<\/span> sample2.component.spec.ts\r\n\r\n+  function getForm() {\r\n+    return fixture.debugElement.children[0].injector.get(NgForm);\r\n+  }\r\n<\/span>\r\n  ...\r\n\r\n  it('input \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u30d5\u30a9\u30fc\u30e0\u306b\u53cd\u6620\u3055\u308c\u308b', fakeAsync(() => {\r\n    component.name = 'abc';\r\n    fixture.detectChanges();\r\n    tick();\r\n\r\n    const element = fixture.debugElement.query(By.css('[name=name]')).nativeElement as HTMLInputElement;\r\n    expect(element.value).toBe('abc');\r\n+    expect(getForm().value.name).toBe('abc');\r\n<\/span>  }));\r\n<\/code><\/pre>\n
\u4e3a\u4e86\u9a8c\u8bc1\u8868\u5355\u7684\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528value\u5c5e\u6027\u3002
\n\u9664\u4e86\u503c\u4ee5\u5916\uff0c\u8fd8\u53ef\u4ee5\u5f15\u7528\u5176\u4ed6\u4e0e\u8868\u5355\u7279\u5b9a\u5c5e\u6027\u76f8\u5173\u7684\u9a8c\u8bc1\u7ed3\u679c\u7b49\uff0c\u8fd9\u6837\u53ef\u4ee5\u589e\u52a0\u6d4b\u8bd5\u7684\u65b9\u6cd5\u3002<\/p>\n
\u9a8c\u8bc1\u66f4\u6539\u8868\u5355\u503c\u65f6\u7ec4\u4ef6\u5c5e\u6027\u53d1\u751f\u53d8\u5316\u7684\u60c5\u51b5\u3002<\/h1>\n
\u6700\u5f00\u59cb\uff0c\u9700\u8981\u4f7f\u7528fakeAsync \/ tick\u6765\u5b8c\u6210ngModel\u7684\u5f02\u6b65\u5904\u7406\u3002<\/p>\n
\/\/ sample2.component.spec.ts\r\n\r\n+ it('input \u30d5\u30a9\u30fc\u30e0\u306e\u5024\u306e\u5909\u66f4\u304c\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u53cd\u6620\u3055\u308c\u308b', fakeAsync(() => {\r\n+   fixture.detectChanges();\r\n+   tick();\r\n+\r\n+   const element = fixture.debugElement.query(By.css('[name=name]')).nativeElement as HTMLInputElement;\r\n+   element.value = 'def';\r\n+   element.dispatchEvent(new Event('input'));\r\n+\r\n+   expect(component.name).toBe('def');\r\n+   expect(getForm().value.name).toBe('def');\r\n+ }));\r\n<\/code><\/pre>\n
\u9a8c\u8bc1<\/h1>\n
\u53ef\u4ee5\u4f7f\u7528\u4e0eHTML5\u9a8c\u8bc1\u76f8\u540c\u7684\u8868\u793a\u65b9\u6cd5\u5728\u8868\u5355\u4e2d\u6dfb\u52a0\u9a8c\u8bc1\u7684\u6a21\u677f\u9a71\u52a8\u5f62\u5f0f\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528required\u5c5e\u6027\u6765\u7f16\u5199\u6d4b\u8bd5\u3002<\/p>\n
\/\/<\/span> sample2.component.html\r\n\r\n<form>\r\n...<\/span>\r\n-   <input name=\"name\" type=\"text\" [(ngModel)]=\"name\">\r\n+   <input name=\"name\" type=\"text\" [(ngModel)]=\"name\" required>\r\n<\/span><\/code><\/pre>\n
\/\/<\/span> sample2.component.spec.ts\r\n\r\n+ it('input \u30d5\u30a9\u30fc\u30e0\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3', fakeAsync(() => {\r\n+   fixture.detectChanges();\r\n+   tick();\r\n+\r\n+   const element = fixture.debugElement.query(By.css('[name=name]')).nativeElement as HTMLInputElement;\r\n+\r\n+   element.value = '';\r\n+   element.dispatchEvent(new Event('input'));\r\n+   expect(getForm().valid).toBe(false);\r\n+\r\n+   element.value = 'abc';\r\n+   element.dispatchEvent(new Event('input'));\r\n+   expect(getForm().valid).toBe(true);\r\n<\/span>}));<\/span>\r\n<\/code><\/pre>\n
\u5728\u5b9e\u9645\u8fd0\u7528\u4e2d\uff0c\u4ec5\u4ec5\u4f7f\u7528HTML5\u7684\u9a8c\u8bc1\u662f\u4e0d\u591f\u7684\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u9700\u8981\u66f4\u590d\u6742\u64cd\u4f5c\u7684\u60c5\u51b5\u3002Angular\u5efa\u8bae\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u4f7f\u7528Reactive-forms\uff0c\u800c\u4e0d\u662fTemplate driven Form\u3002<\/p>\n
\n
\u4ee5\u4e0b\u662f\u4f7f\u7528Reactive form\u6d4b\u8bd5\u7ec4\u4ef6\u7684\u793a\u4f8b3\u7684\u6587\u7ae0\u3002<\/p>\n<\/form>\n","protected":false},"excerpt":{"rendered":"
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