Reegan's questions

使用 Angular Material 对话框弹出时，我发现以下错误。单击“添加产品”按钮时，发现以下错误

阻止在元素上使用 aria-hidden，因为其后代保留了焦点。焦点不能对辅助技术用户隐藏。避免在焦点元素或其祖先上使用 aria-hidden。...

我的 stackblitz 链接是 https://stackblitz.com/github/reegan2024/mygithubrepo?file=README.md

有人可以帮忙吗

我有一个带有嵌套对象的对象。我尝试使用 Angular 的 ngFor 指令在 html 中显示。但我得到了多次的结果。在我的对象下面

 productlists = [
    {
      productname: 'orange', price:
        [{ small: 20 }, { medium: 30 }, { large: 40 }], gst: 12
    },
    {
      productname: 'lemon', price:
        [{ small: 40 }, { medium: 80 }, { large: 102 }], gst: 20
    },
    {
      productname: 'apple', price:
        [{ small: 40 }, { medium: 80 }, { large: 102 }], gst: 20
    }

];

html 代码是

<div style="margin-left: 20rem;">
<div *ngFor="let product of productlists" >

    <p style="color: blue;">Product Name {{product.productname}}</p>

    <div *ngFor="let productprice of product.price">
        Product Price
        <p>Small: {{productprice.small}}</p>
        <p>Medium: {{productprice.medium}}</p>
        <p>Large: {{productprice.large}}</p>
    </div>
    <p>Product GST {{product.gst}}</p>

</div>
</div>

我得到的结果是

请帮我正确显示

我有两个单选按钮。当我选择“部分付款”时，输入元素 formControlName="paidamount" 将与 <div class="formGroup" 一起显示在屏幕上。我使用了绑定，但这不起作用。

<mat-radio-group aria-label="Select an option" formControlName="fullypaid" [(ngModel)]="fullypaidvalue">
    <mat-radio-button value="true" [checked]="true">Fully Paid</mat-radio-button>
    <mat-radio-button value="false">Partially Paid</mat-radio-button>
  </mat-radio-group>
  <p>{{fullypaidvalue}}</p>
  <div class="formGroup" [class.d-none]="fullypaidvalue">
    <label for="paidamount" class="form-label" style="margin-top: 10pt;">Paid Amount</label>
    <input type="text" class="form-control form-control1" id="paidamount" formControlName="paidamount"
      placeholder="paidamount" name="paidamount" style="margin-left: 20pt;">
  </div>

我的 stackblitz 链接是 https://stackblitz.com/github/reegan2024/mygithubrepo?file=README.md

有人可以帮帮我吗

我正在 Angular 项目中生成 pdf。在这里我将其用作<app-pagedesign>子组件<app-root>，产品列表在此处提交。提交表单后生成 pdf。一切正常。但是当我单击“联系人”并返回“产品”链接时，pdf 生成时没有提供任何输入。即它采用了之前提交的值。我认为这是由于子组件的初始化造成的。但我无法解决这个问题。有人能帮我解决这个问题吗？

我的 stackblitz 链接是 https://stackblitz.com/github/reegan2024/mygithubrepo?file=README.md

我正在使用带有动态字段（产品名称）的反应式表单。如果提交表单时未填写产品名称，则可能会引发验证错误。

但是当我单击“添加”按钮时，每次输入新内容时都会出现“输入产品名称”错误（formControlName="productname"）。我还提供了 stackblitz 链接，请有人提供解决方案 https://stackblitz.com/github/reegan2024/mygithubrepo?file=src%2Fapp%2Fapp.component.html

我正在开发计费模块，该模块具有动态添加的输入字段。在这里，我使用自动完成搜索过滤器来动态添加输入字段（产品名称）。

但如果有一个产品名称字段，自动完成搜索工作正常。当我添加多个产品名称详细信息时，只有最后添加的字段可以正常工作。当我尝试更改以前的产品名称字段时，它不起作用。

下面是html代码

<form [formGroup]="productFormarray" (ngSubmit)="onSubmit()">
<div class="reg-right">
    <div class="formGroup">
        <label for="customername" class="form-label">Customer Name</label>
        <input type="text" class="form-control" id="customername" placeholder="Customer Name"
            formControlName="customername">
    </div>
    <div class="formGroup" class="formGroup" formArrayName="productdetails">
        <div class="table-responsive">
            <table class="table table-bordered" style="margin-top: 20px;">
                <thead>
                    <tr>
                        <td style="width:40%">
                            Product Name
                        </td>
                        <td style="width:15%">
                            Quantity
                        </td>
                        <td style="width:15%">
                            Price
                        </td>
                        <td style="width:15%">
                            Gst
                        </td>
                        <td>
                        </td>
                    </tr>
                </thead>
                <tr *ngFor="let product of productdetailsarray.controls; let i=index" [formGroupName]="i">
                    <td>
                        <div class="formGroup">
                            <input formControlName="productname" matInput type="text" [matAutocomplete]="auto"
                                class="form-control" [formControl]="formcontrol" />
                            <mat-autocomplete #auto="matAutocomplete">
                                <mat-option *ngFor="let product of filteroptions | async" [value]="product">
                                    {{product}}
                                </mat-option>
                            </mat-autocomplete>
                        </div>
                    </td>
                    <td>
                        <div class="formGroup">
                            <select class="form-control" id="quantit" formControlName="quantit" name="quantit">
                                <option *ngFor="let quantity of quantitylist" [ngValue]="quantity">
                                    {{quantity}}
                                </option>
                            </select>
                        </div>
                    </td>
                    <td>
                        <div class="formGroup">
                            <input type="text" class="form-control" id="price" formControlName="price"
                                placeholder="Price " readonly name="price">
                        </div>
                    </td>
                    <td>
                        <div class="formGroup">
                            <input type="text" class="form-control" id="gst" formControlName="gst" placeholder="Gst"
                                name="gst" readonly>
                        </div>
                    </td>
                    <td>
                        <a type="button" class="form-control btn btn-primary" style="background-color: red;"
                            (click)="removeProduct(i)">Remove (-)</a>
                    </td>
                </tr>
            </table>
        </div>
        <a type="button" class="btn btn-secondary" style="background-color: green;"
            (click)="addNewProduct()">Add(+)</a>
        <br />
    </div>
    <br />
    <br />
    <div class="row">
        <div class="col-md-6">
        </div>
        <div class="col-md-6">
            <div class="formGroup">
                <label for="totalprice" class="form-label" style="margin-top: 10pt;">Total Product Price</label>
                <input type="text" class="form-control form-control1" id="totalprice" formControlName="totalprice"
                    placeholder="totalprice" name="totalprice" style="margin-left: 20pt; float:right" readonly>
            </div>
        </div>
    </div>
    <button type="submit" class="btn btn-primary">Submit</button>
</div>

下面是打字稿代码

import { Component, OnInit, ViewChild } from '@angular/core';
import { FormGroup, FormControl, FormArray, FormBuilder, NgForm, Validators } from '@angular/forms'
import { EMPTY, Observable, map, of, startWith } from 'rxjs';
import { toArray } from 'rxjs';

@Component({
  selector: 'app-test',
  templateUrl: './test.component.html',
  styleUrls: ['./test.component.css']
})
export class TestComponent implements OnInit 
 {
  productFormarray: any;
  quantitylist = [0.5, 1, 1.5];
  items!: FormArray;
  totalGstPrice: number = 0;
  totalProductPrice: number = 0;
  productlist = [{ productname: "apple", price: 10, gst: 10 }, { productname: "orange", price: 20, gst: 12 }, { productname: "lemon", price: 30, gst: 20 }];
  productlistss = ['apple', 'lemon', 'orange'];
  filteroptions!: Observable<string[]>;
  formcontrol = new FormControl('');

  constructor(private fb: FormBuilder) {
    this.productFormarray = new FormGroup({
      customername: new FormControl('', Validators.required),
      productdetails: new FormArray([]),
      remember: new FormControl('true'),
      totalprice: new FormControl(''),
    })
  }

  private _filter(value: string): string[] {
    const searchvalue = value.toLocaleLowerCase();
    return this.productlistss.filter(option => option.toLocaleLowerCase().includes(searchvalue));
  }

  onProductChange(selectedProductName: string, index: number) {
    const selectedProduct = this.productlist.find(
      (product) => product.productname === selectedProductName
    );
    if (selectedProduct) {
      const productDetailsArray = this.productFormarray.get(
        'productdetails'
      ) as FormArray;
      if (productDetailsArray && productDetailsArray.at(index)) {
        const quantityControl = productDetailsArray.at(index).get('quantit');
        if (quantityControl) {
          const quantity = quantityControl.value;
          const price = selectedProduct.price * quantity;
          const priceControl = productDetailsArray.at(index).get('price');
          if (priceControl) {
            priceControl.setValue(price);
          }
        }
      }
    }
  }

  onQuantityChange(selectedQuantity: number, index: number) {
    const productDetailsArray = this.productFormarray.get(
      'productdetails'
    ) as FormArray;
    if (productDetailsArray && productDetailsArray.at(index)) {
      const productNameControl = productDetailsArray.at(index).get('productname');
      if (productNameControl) {
        const selectedProductName = productNameControl.value;
        const selectedProduct = this.productlist.find(
          (product) => product.productname === selectedProductName
        );
        if (selectedProduct) {
          const price = selectedProduct.price * selectedQuantity;
          const priceControl = productDetailsArray.at(index).get('price');
          if (priceControl) {
            priceControl.setValue(price);
          }
        }
      }
    }
  }

  onPriceChange(selectedQuantity: number, index: number) {
    const productDetailsArray = this.productFormarray.get('productdetails') as FormArray;
    if (productDetailsArray && productDetailsArray.at(index)) {
      const productNameControl = productDetailsArray.at(index).get('productname');
      if (productNameControl) {
        const selectedProductName = productNameControl.value;
        const selectedProduct = this.productlist.find(
          (product) => product.productname === selectedProductName
        );
        if (selectedProduct) {
          const priceControl = productDetailsArray.at(index).get('price');
          const gst = ((selectedProduct.gst * priceControl?.value) / 100);
          const gstControl = productDetailsArray.at(index).get('gst');
          gstControl?.setValue(gst);
        }
      }
    }
  }

  addNewProduct() {
    this.items = this.productFormarray.get('productdetails') as FormArray;
    const newProduct = this.createNewProduct();
    this.items.push(newProduct);
    const indexvalue = this.items.length - 1;
    this.productFormarray.get('productdetails').controls[indexvalue].get('quantit').setValue(this.quantitylist[1]);
    const productNameControl = newProduct.get('productname');
    if (productNameControl) {
      this.filteroptions = productNameControl.valueChanges.pipe(startWith(''), map(value => this._filter(value)));
      console.log('filteroption--- = ' + this.filteroptions);
      productNameControl.valueChanges.subscribe(selectedProductName => {
        this.onProductChange(selectedProductName, indexvalue);
      }
      );
    }
    const quantityControl = newProduct.get('quantit');
    if (quantityControl) {
      quantityControl.valueChanges.subscribe(selectedQuantity => {
        this.onQuantityChange(selectedQuantity, indexvalue);
      })
    }
    const priceControl = newProduct.get('price');
    if (priceControl) {
      priceControl.valueChanges.subscribe((selectedProductName) =>
        this.onPriceChange(selectedProductName, indexvalue)
      );
    }
  }

  createNewProduct(): FormGroup {
    return new FormGroup({
      productname: new FormControl('', Validators.required),
      quantit: new FormControl('1', Validators.required),
      price: new FormControl('', Validators.required),
      gst: new FormControl('', Validators.required)
    })
  }

  removeProduct(index: any) {
    this.items = this.productFormarray.get('productdetails') as FormArray;
    this.items.removeAt(index);
  }
  get productdetailsarray() {
    return this.productFormarray.get('productdetails') as FormArray;
  }

  ngOnInit() {
    this.addNewProduct();
  }
  onSubmit() {
  }
}

有人可以帮助我吗？