几天来我一直在为此苦思冥想,但我找不到发生这种情况的原因。
所以我收到以下错误消息:
TypeError: Cannot assign to read only property 'closed' of object '[object Object]'
如您所见,它发生在 civilliability-step3.component.ts 的 sendProposal 函数中:
civilliability-step3.component.ts
@Component({
selector: 'app-civilliability-step3',
templateUrl: './civilliability-step3.component.html',
styleUrls: ['./civilliability-step3.component.scss']
})
export class CivilliabilityStep3Component implements OnInit, OnDestroy {
@Output() modelChange = new EventEmitter<CivilLiabilityRequestType>();
@Output() onCloseForm = new EventEmitter();
@Input() model: CivilLiabilityRequestType;
public formGroup: FormGroup;
private closedProposalSub: Subscription;
constructor(private formBuilder: FormBuilder, private store: Store) {}
ngOnInit() {
this.buildForm();
if (this.model !== undefined && this.model.details.closed) {
disableFormGroup(this.formGroup);
}
this.closedProposalSub = this.store
.select(ProposalsState.closedProposalResult)
.subscribe(val => {
if (val !== undefined) {
this.modelChange.emit(val);
this.onCloseForm.emit();
}
});
}
ngOnDestroy() {
if (this.closedProposalSub && !this.closedProposalSub.closed) {
this.closedProposalSub.unsubscribe();
}
this.store.dispatch(new ResetClosedProposalResult());
}
sendProposal() {
this.model.details.closed = true;
this.store.dispatch(new CloseProposal(this.model));
}
closeForm() {
disableFormGroup(this.formGroup);
}
private buildForm() {
this.formGroup = this.formBuilder.group({});
}
}
组件的使用:
civilliability-detail.component.html
<app-civilliability-step3
(onCloseForm)="step1.closeForm(); step2.closeForm(); step3.closeForm()"
[(model)]="model"
#step3></app-civilliability-step3>
我试过以不同的方式分配真值,因为我想也许我不能将它直接添加到模型中,这是一个Input
。但这也无济于事。
sendProposal() {
const detailsModel = this.model.details;
detailsModel.closed = true; // <-- same error
this.model.details = detailsModel;
const tmpModel = this.model;
tmpModel.details.closed = true; // <-- same error
this.model = tmpModel;
// this.model.details.closed = true;
this.store.dispatch(new CloseProposal(this.model));
}
更新 1: 添加了 CivilLiabilityRequestType
export interface CivilLiabilityRequestType extends IRequestData {
details: CivilLiabilityDetailsModel;
questionnaire: CivilLiabilityQuestionnaireModel;
comments: CivilLiabilityCommentsModel;
}
export class CivilLiabilityDetailsModel {
baseReqId: number;
startDate: string;
branch: NamedResource;
fractioning: NamedResource;
closed: boolean;
}
更新 2:显示 this.model 的来源:
civilliability-detail.component.ts
export class CivilliabilityProposalDetailComponent implements OnInit, OnDestroy {
@Input() model: CivilLiabilityRequestType;
@Input() tab: Tab;
@Input() tabs: Tab[] = [];
@Input() selectedTabIndex;
@Input() idx: number;
constructor() {}
ngOnInit() {}
ngOnDestroy() {
this.model = getEmptyCivilLiabilityRequest();
}
}
detail.component.html
<mat-tab *ngFor="let tab of tabs; let idx = index">
...
<app-civilliability-proposal-detail
[model]="tab.tabData.data"
[tab]="tab"
[tabs]="tabs"
[selectedTabIndex]="selectedTabIndex"
[idx]="idx"
>
</app-civilliability-proposal-detail>
...
</mat-tab>
detail.component.ts
@Component({
selector: 'app-detail',
templateUrl: './detail.component.html',
styleUrls: ['./detail.component.scss']
})
export class DetailComponent implements OnInit {
public tabs: Tab[] = [];
public selectedTabIndex = 0;
public quote?: QuoteData;
public quoteModel: QuoteData;
public originalModel: any[];
public readonly = false;
@Input() public requestType;
constructor(private activeRoute: ActivatedRoute) {}
ngOnInit() {
const snapshot = this.activeRoute.snapshot;
this.originalModel = snapshot.data['model'];
if (this.originalModel) {
this.tabs = this.createTabsFromQuoteModel(this.originalModel);
}
}
private createTabsFromQuoteModel(model: any): Tab[] {
let tabs: Tab[] = [];
for (const key of Object.keys(model)) {
const element = model[key];
let type: RequestTypes;
let proposalData: IRequestData = {};
if (key === 'civilLiability') {
type = RequestTypes.CivilLiability;
proposalData.type = RequestTypes.CivilLiability;
proposalData.data = element;
}
tabs = [...tabs, { type: type, name: '', tabData: proposalData }];
proposalData = {};
}
return tabs;
}
}
只是为了概述结构,让我们保持清醒:
<app-detail>
<mat-tab *ngFor="let tab of tabs; let idx = index">
<app-civilliability-proposal-detail [model]="tab.tabData.data">
<app-civilliability-step3 [(model)]="model" ></app-civilliability-step3>
</app-civilliability-step3
</app-civilliability-proposal-detail>
</mat-tab
</app-detail>
最佳答案
我相信发生这种情况是因为您无法修改存储在状态 (ngRx) 中的对象,您可以尝试这样的事情:
sendProposal() {
this.store.dispatch(new CloseProposal(Object.assign({}, this.model, {
details: { closed: true }
})));
}
关于javascript - 无法分配给对象 'closed' 的只读属性 '[object Object]',我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/55587708/