angularjs – 覆盖primeNg的DataTable组件时的模板解析错误

发布时间：2020-12-17 08:52:10 所属栏目：安全来源：网络整理

导读：我想覆盖primeng的DataTable组件的模板,这就是我的代码的样子：我-datatable.component.ts import { Component,OnInit,ElementRef,Renderer2,ChangeDetectorRef } from '@angular/core';import { DataTable,DomHandler } from 'primeng/primeng';import { O

我想覆盖primeng的DataTable组件的模板,这就是我的代码的样子：

我-datatable.component.ts

import { Component,OnInit,ElementRef,Renderer2,ChangeDetectorRef } from '@angular/core';
import { DataTable,DomHandler } from 'primeng/primeng';
import { ObjectUtils } from '../../../../node_modules/primeng/components/utils/ObjectUtils'
import { ColumnHeaders } from '../../../../node_modules/primeng/components/datatable/datatable'

@Component({
  selector: 'my-datatable',templateUrl: './my-datatable.component.html',styleUrls: ['./my-datatable.component.scss']    
})
export class MyDatatableComponent extends DataTable {

    constructor(el: ElementRef,domHandler: DomHandler,renderer: Renderer2,changeDetector: ChangeDetectorRef,objectUtils: ObjectUtils) { 
        super(el,domHandler,renderer,changeDetector,objectUtils);
        console.log('MyDatatableComponent');
    }

}

my-datatable.component.html,此文件与基本组件具有相同的模板.想法是先运行然后进行修改

<div [ngStyle]="style" [class]="styleClass" [style.width]="containerWidth" [ngClass]="{'ui-datatable ui-widget':true,'ui-datatable-reflow':responsive,'ui-datatable-stacked':stacked,'ui-datatable-resizable':resizableColumns,'ui-datatable-scrollable':scrollable}">
  <div class="ui-datatable-loading ui-widget-overlay" *ngIf="loading"></div>
  <div class="ui-datatable-loading-content" *ngIf="loading">
    <i class="fa fa-circle-o-notch fa-spin fa-2x"></i>
  </div>
  <div class="ui-datatable-header ui-widget-header" *ngIf="header">
    <ng-content select="p-header"></ng-content>
  </div>
  <p-paginator [rows]="rows" [first]="first" [totalRecords]="totalRecords" [pageLinkSize]="pageLinks" styleClass="ui-paginator-bottom" (onPageChange)="paginate($event)" [rowsPerPageOptions]="rowsPerPageOptions" *ngIf="paginator && paginatorPosition!='bottom' || paginatorPosition =='both'"></p-paginator>
  <div class="ui-datatable-tablewrapper" *ngIf="!scrollable">
    <table [class]="tableStyleClass" [ngStyle]="tableStyle">
      <thead class="ui-datatable-thead">
        <tr *ngIf="!headerColumnGroup" class="ui-state-default" [pColumnHeaders]="columns"></tr>
        <ng-template [ngIf]="headerColumnGroup">
          <tr *ngFor="let headerRow of headerColumnGroup.rows" class="ui-state-default" [pColumnHeaders]="headerRow.columns"></tr>
        </ng-template>
      </thead>
      <tfoot *ngIf="hasFooter()" class="ui-datatable-tfoot">
        <tr *ngIf="!footerColumnGroup" class="ui-state-default" [pColumnFooters]="columns"></tr>
        <ng-template [ngIf]="footerColumnGroup">
          <tr *ngFor="let footerRow of footerColumnGroup.rows" class="ui-state-default" [pColumnFooters]="footerRow.columns"></tr>
        </ng-template>
      </tfoot>
      <tbody [ngClass]="{'ui-datatable-data ui-widget-content': true,'ui-datatable-hoverable-rows': (rowHover||selectionMode)}" [pTableBody]="columns"></tbody>
    </table>
  </div>

  <ng-template [ngIf]="scrollable">
    <div class="ui-datatable-scrollable-wrapper ui-helper-clearfix" [ngClass]="{'max-height':scrollHeight}">
      <div *ngIf="frozenColumns" [pScrollableView]="frozenColumns" frozen="true" [ngStyle]="{'width':this.frozenWidth}" class="ui-datatable-scrollable-view ui-datatable-frozen-view"></div>
      <div [pScrollableView]="scrollableColumns" [ngStyle]="{'width':this.unfrozenWidth,'left': this.frozenWidth}" class="ui-datatable-scrollable-view" [virtualScroll]="virtualScroll" (onVirtualScroll)="onVirtualScroll($event)" [ngClass]="{'ui-datatable-unfrozen-view': frozenColumns}"></div>
    </div>
  </ng-template>

  <p-paginator [rows]="rows" [first]="first" [totalRecords]="totalRecords" [pageLinkSize]="pageLinks" styleClass="ui-paginator-bottom" [alwaysShow]="alwaysShowPaginator" (onPageChange)="paginate($event)" [rowsPerPageOptions]="rowsPerPageOptions" *ngIf="paginator && paginatorPosition!='top' || paginatorPosition =='both'"></p-paginator>
  <div class="ui-datatable-footer ui-widget-header" *ngIf="footer">
    <ng-content select="p-footer"></ng-content>
  </div>

  <div class="ui-column-resizer-helper ui-state-highlight" style="display:none"></div>
  <span class="fa fa-arrow-down ui-datatable-reorder-indicator-up" style="position: absolute; display: none;"></span>
  <span class="fa fa-arrow-up ui-datatable-reorder-indicator-down" style="position: absolute; display: none;"></span>
</div>

我还在app.module.ts文件的声明数组中添加了这个新组件.所以,我知道它被包含在内,这就是为什么我得到一个解析错误的原因.

我在控制台中遇到的错误是：

Unhandled Promise rejection: Template parse errors:
Can't bind to 'pColumnHeaders' since it isn't a known property of 'tr'. ("ass="ui-datatable-thead">
                  <tr *ngIf="!headerColumnGroup" class="ui-state-default" [ERROR ->][pColumnHeaders]="columns"></tr>
                  <ng-template [ngIf]="headerColumnGroup">
         "): ng:///AppModule/CsxDatatableComponent.html@14:74
Can't bind to 'pColumnHeaders' since it isn't a known property of 'tr'. ("                      <tr *ngFor="let headerRow of headerColumnGroup.rows" class="ui-state-default" [ERROR ->][pColumnHeaders]="headerRow.columns"></tr>
                  </ng-template>
              </thead>
"): ng:///AppModule/CsxDatatableComponent.html@16:100
Can't bind to 'pColumnFooters' since it isn't a known property of 'tr'. ("ass="ui-datatable-tfoot">
                  <tr *ngIf="!footerColumnGroup" class="ui-state-default" [ERROR ->][pColumnFooters]="columns"></tr>
                  <ng-template [ngIf]="footerColumnGroup">
         "): ng:///AppModule/CsxDatatableComponent.html@20:74
Can't bind to 'pColumnFooters' since it isn't a known property of 'tr'. ("                      <tr *ngFor="let footerRow of footerColumnGroup.rows" class="ui-state-default" [ERROR ->][pColumnFooters]="footerRow.columns"></tr>
                  </ng-template>
              </tfoot>
"): ng:///AppModule/CsxDatatableComponent.html@22:100
Can't bind to 'pTableBody' since it isn't a known property of 'tbody'. ("datatable-data ui-widget-content': true,'ui-datatable-hoverable-rows': (rowHover||selectionMode)}" [ERROR ->][pTableBody]="columns"></tbody>
          </table>
      </div>
"): ng:///AppModule/CsxDatatableComponent.html@25:137
Can't bind to 'pScrollableView' since it isn't a known property of 'div'. ("-helper-clearfix" [ngClass]="{'max-height':scrollHeight}">
              <div *ngIf="frozenColumns" [ERROR ->][pScrollableView]="frozenColumns" frozen="true" 
                  [ngStyle]="{'width':this.frozenWid"): ng:///AppModule/CsxDatatableComponent.html@31:41
Can't bind to 'pScrollableView' since it isn't a known property of 'div'. ("ozenWidth}" class="ui-datatable-scrollable-view ui-datatable-frozen-view"></div>
              <div [ERROR ->][pScrollableView]="scrollableColumns" [ngStyle]="{'width':this.unfrozenWidth,'left': this.frozenWidt"): ng:///AppModule/CsxDatatableComponent.html@33:19
Can't bind to 'virtualScroll' since it isn't a known property of 'div'. ("is.unfrozenWidth,'left': this.frozenWidth}"
                  class="ui-datatable-scrollable-view" [ERROR ->][virtualScroll]="virtualScroll" (onVirtualScroll)="onVirtualScroll($event)"
                  [ngClas"): ng:///AppModule/CsxDatatableComponent.html@34:55 ; Zone: <root> ; Task: Promise.then ;

pColumnHeaders,pColumnFooters是已经通过DataTableModule导出的所有组件.我无法弄清楚如何使这些解析错误消失,我相信我错过了一些东西.

任何帮助深表感谢.

更新：
这就是我的app.module.ts的样子.我导入了DataTableModule,BrowserModule和FormsModule.我可以在我的视图上使用标准的primeNg数据表组件,但是无法覆盖它.

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';

/* PRIME NG */
import { 
          AutoCompleteModule,PanelMenuModule,MenuItem,MenubarModule,OverlayPanelModule,TabViewModule,ButtonModule,CodeHighlighterModule,DropdownModule,DialogModule,MultiSelectModule,InputTextModule,TooltipModule,CheckboxModule,SplitButtonModule,RadioButtonModule,MessagesModule,ConfirmDialogModule,ConfirmationService,AccordionModule,PanelModule,FieldsetModule,CalendarModule,DataTableModule,MenuModule,BreadcrumbModule,TreeModule,DomHandler,ChartModule
        } from 'primeng/primeng';
import { ObjectUtils } from '../../node_modules/primeng/components/utils/ObjectUtils';


/* APP-SPECIFIC */
import { WindowRef } from './windowref';
import { routing } from './app.routing';
import { MyDatatableComponent } from './components/my-datatable.component';


@NgModule({
  declarations: [ 
    DatatableComponent,ChartsGraphsComponent,CsxDatatableComponent
  ],imports: [
    BrowserModule,FormsModule,HttpModule,routing,AutoCompleteModule,BrowserAnimationsModule,ChartModule
  ],providers: [
    DomHandler,ObjectUtils
  ],bootstrap: [AppComponent]
})
export class AppModule { }

您会看到此错误,因为您尝试使用的选择器不会由各自的模块导出,因为它们是PrimeNG框架的内部/私有部分的一部分.

如果未导出您尝试使用的选择器,则导入DataTableModule将没有任何区别.

对于[pColumnHeaders],由ColumnHeaders组件在datatable.ts中定义,您将看到ColumnHeaders组件未在DataTableModule定义中导出：

@NgModule({
    imports: [CommonModule,SharedModule,PaginatorModule,FormsModule],exports: [DataTable,SharedModule],declarations: [DataTable,DTRadioButton,DTCheckbox,ColumnHeaders,ColumnFooters,TableBody,ScrollableView,RowExpansionLoader]
})
export class DataTableModule { }

Source of datatable.ts

为了能够使用[pColumnHeaders]选择器,DataTableModule必须像这样导出ColumnHeaders组件：

@NgModule({
    imports: [CommonModule,ColumnHeaders],RowExpansionLoader]
})
export class DataTableModule { }

我的猜测是这个设计是有意的,你试图使用不属于API的’私有’和未记录的选择器.

你必须问自己的问题是你想要实现的目标.有可能是PrimeNG DataTable API provides the interface to do that.

（编辑：李大同）

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