Model binding in Angular Query builder component

27 Sep 20232 minutes to read

Model binding allows to bind properties for the components used in field, operator, and value columns. To implement model binding, assign fieldModel, operatorModel, and valueModel properties in QueryBuilder.

app.component.ts

import { Component, ViewChild, OnInit } from '@angular/core';
import { QueryBuilderComponent } from '@syncfusion/ej2-angular-querybuilder';
import {  RuleModel } from '@syncfusion/ej2-querybuilder';

@Component({
  selector: 'app-root',
  templateUrl: `template-driven.html`
})
export class AppComponent implements OnInit {
  @ViewChild('querybuilder') qryBldrObj: QueryBuilderComponent | undefined;
  public importRules?: RuleModel;
  ngOnInit(): void {
    this.importRules = {
      'condition': 'and',
      'rules': [{
        'label': 'Employee ID',
        'field': 'EmployeeID',
        'type': 'number',
        'operator': 'equal',
        'value': 1001
    }]
    };
  }
}

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { QueryBuilderModule } from '@syncfusion/ej2-angular-querybuilder';
import { DropDownListModule, MultiSelectModule } from '@syncfusion/ej2-angular-dropdowns';
import { CheckBoxModule, RadioButtonModule} from '@syncfusion/ej2-angular-buttons';
import { TextBoxModule, NumericTextBoxModule } from '@syncfusion/ej2-angular-inputs';
import { AppComponent } from './app.component'
import { DropDownButtonModule } from '@syncfusion/ej2-angular-splitbuttons';
import { DatePickerModule } from '@syncfusion/ej2-angular-calendars';

/**
 * Module
 */

@NgModule({
  imports: [
    BrowserModule,
	  QueryBuilderModule,
    CheckBoxModule,
    DropDownListModule,
    DropDownButtonModule,
    DatePickerModule,
    TextBoxModule,
    NumericTextBoxModule,
    MultiSelectModule,
    RadioButtonModule
  ],
  declarations: [AppComponent],
  bootstrap: [AppComponent]
})
export class AppModule { }

main.ts

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

import 'zone.js';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);