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[英]PatchValue or setValue with formGroup more formArray and formGroup
[英]Angular FormGroup won't update it's value immediately after patchValue or setValue
我有一個如下形式:
createForm() {
this.procedimentoForm = this.formBuilder.group({
nome: ['', Validators.required],
descricao: ['', Validators.required],
conteudo: ['', Validators.required],
solucao: ['', Validators.required],
mesa: ['', Validators.required]
});
}
模板:
<form [formGroup]="procedimentoForm" class="ui form">
{{procedimentoForm.value.conteudo}}
<div class="field">
<label>Descrição</label>
<input type="text" placeholder="Descrição" formControlName="descricao">
</div>
<div class="field">
<label>Conteúdo</label>
<tinymce [elementId]="'conteudo'" (onEditorKeyup)="keyupHandlerFunction($event)"></tinymce>
</div>
</form>
它使用實現TinyMCE編輯器的自定義組件:
import { Component, AfterViewInit, ViewChild, EventEmitter, forwardRef, ElementRef, OnDestroy, Input, Output } from '@angular/core';
import {
ControlValueAccessor,
NG_VALUE_ACCESSOR,
NG_VALIDATORS,
FormControl,
Validator
} from '@angular/forms';
@Component({
selector: 'tinymce',
templateUrl: './tinymce.component.html',
})
export class TinyMCEComponent implements AfterViewInit, OnDestroy {
@Input() elementId: String;
@Output() onEditorKeyup = new EventEmitter();
editor;
ngAfterViewInit() {
tinymce.init({
selector: '#' + this.elementId,
plugins: ['link', 'paste', 'table'],
skin_url: '../assets/skins/lightgray',
setup: editor => {
this.editor = editor;
editor.on('keyup', () => {
const content = editor.getContent();
this.onEditorKeyup.emit(content);
});
}
});
}
ngOnDestroy() {
tinymce.remove(this.editor);
}
}
表單中的keyup處理程序如下所示:
keyupHandlerFunction(event) {
console.log(this.procedimentoForm);
this.procedimentoForm.markAsDirty()
this.procedimentoForm.patchValue({ conteudo: event }, {onlySelf: false, emitEvent: true});
console.log(this.procedimentoForm.value.conteudo);
}
問題是,我可以看到this.procedimentoForm.value.conteudo正在更改,因為我在keyup事件處理程序中記錄了“ console.log(this.procedimentoForm.value.conteudo)”。 但是,{{procedimentoForm.value.conteudo}}不會更新,除非我將焦點移到編輯器之外。 同樣,只有在焦點更改后,驗證才會更新。 我不明白為什么。
如果支持值正在更新,但是更改未在視圖中反映出來,則很可能尚未將其標記為要更新。
您可以使用ChangeDetectorRef
手動檢測更改: https : ChangeDetectorRef
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