PrimeNG DataTables适配Angular4问题求助：能否修复及方案？

Hey there, let's work through your problem—this is absolutely fixable, and PrimeNG does support Angular 4 for its DataTable component. Let's break down what's going wrong and how to fix it:

First, Clarify PrimeNG Version Compatibility #

PrimeNG doesn't have a separate "Angular 4 version" of DataTable, but you need to use a PrimeNG release that's compatible with Angular 4. Angular 4 works best with PrimeNG 4.x.x versions (e.g., 4.3.0). If you're using a newer PrimeNG version (like 5+), that's likely causing compatibility issues.

Step 1: Fix Your PrimeNG Version #

Check your package.json file:

• Update the primeng dependency to a 4.x release, e.g.:

  "primeng": "^4.3.0"
  

• Run these commands to refresh dependencies:

  rm -rf node_modules
  npm cache clean --force
  npm install
  

Fixing the 'app-table' Template Error #

The error 'app-table' is not... points to one of two scenarios:

1. You're using a custom app-table component that isn't properly declared/imported in your module.
2. You meant to use PrimeNG's native <p-dataTable> but accidentally used <app-table> instead.

If You're Using a Custom app-table Component: #

• Confirm the component's selector is explicitly set to app-table:

  @Component({
    selector: 'app-table',
    templateUrl: './app-table.component.html'
  })
  export class AppTableComponent { }
  

• Add this component to the declarations array of the NgModule where you're using it (e.g., AppModule):

  @NgModule({
    declarations: [
      // ... other components
      AppTableComponent
    ]
  })
  

• If app-table lives in a separate feature module, ensure that module exports the component and is imported into your main module.

If You Meant to Use PrimeNG's DataTable: #

• Replace <app-table> in your template with PrimeNG's native <p-dataTable> tag.
• Import the DataTableModule into your NgModule to enable the component:

  import { DataTableModule } from 'primeng/primeng';
  
  @NgModule({
    imports: [
      // ... other modules like BrowserModule, FormsModule
      DataTableModule
    ]
  })
  export class AppModule { }
  

Verify Template Syntax #

PrimeNG's syntax was mostly consistent between Angular 2 and 4, so the docs you referenced should work with small checks. A basic PrimeNG 4 DataTable example looks like this:

<p-dataTable [value]="yourDataArray">
  <p-column field="id" header="ID"></p-column>
  <p-column field="name" header="Name"></p-column>
</p-dataTable>

Final Checks #

• Restart your Angular development server after making changes—cached builds can retain old errors.
• Ensure all core Angular dependencies (like @angular/core, @angular/common) are on 4.x versions to avoid mismatches.

This should resolve your template parsing error and get your PrimeNG DataTable working in Angular 4.

内容的提问来源于stack exchange，提问作者Billy