Angular-QueryBuilder

A modernized Angular 4+ query builder based on jQuery QueryBuilder. Support for heavy customization with Angular components and provides a flexible way to handle custom data types.

Getting Started

Install

• Angular 9, use 0.6.0
• Angular 8, use 0.5.1
• Angular 6-7, use 0.4.2
• Angular 4-5, use 0.3.2

npm install angular2-query-builder

Demo

Play with the Demo here.

Editable Demo

Documentation

Documentation link

Examples

Basic Usage

app.module.ts

import { QueryBuilderModule } from "angular2-query-builder";
import { AppComponent } from "./app.component"

@NgModule(imports: [
  ...,
  QueryBuilderModule,
  IonicModule.forRoot(AppComponent) // (Optional) for IonicFramework 2+
])
export class AppModule { }

app.component.html

...
<query-builder [(ngModel)]='query' [config]='config'></query-builder>
...

app.component.ts

import { QueryBuilderConfig } from 'angular2-query-builder';

export class AppComponent {
  query = {
    condition: 'and',
    rules: [
      {field: 'age', operator: '<=', value: 'Bob'},
      {field: 'gender', operator: '>=', value: 'm'}
    ]
  };

  config: QueryBuilderConfig = {
    fields: {
      age: {name: 'Age', type: 'number'},
      gender: {
        name: 'Gender',
        type: 'category',
        options: [
          {name: 'Male', value: 'm'},
          {name: 'Female', value: 'f'}
        ]
      }
    }
  }
}

Custom Input Components

app.component.html

<query-builder [(ngModel)]='query' [config]='config'>
  <ng-container *queryInput="let rule; type: 'date'">
    <custom-datepicker [(ngModel)]="rule.value"></custom-datepicker>
  </ng-container>
</query-builder>

app.component.ts

query = {
  condition: 'and',
  rules: [
    {field: 'birthday', operator: '=', value: new Date()}
  ]
};

config: QueryBuilderConfig = {
  fields: {
    birthday: {name: 'Birthday', type: 'date', operators: ['=', '<=', '>']
      defaultValue: (() => return new Date())
    },
  }
}

Custom Styling (with Bootstrap 4)

Bootstrap demo.

app.component.html

<query-builder [(ngModel)]='query' [config]='config' [classNames]='classNames'></query-builder>

app.component.ts

classNames: QueryBuilderClassNames = {
  removeIcon: 'fa fa-minus',
  addIcon: 'fa fa-plus',
  arrowIcon: 'fa fa-chevron-right px-2',
  button: 'btn',
  buttonGroup: 'btn-group',
  rightAlign: 'order-12 ml-auto',
  switchRow: 'd-flex px-2',
  switchGroup: 'd-flex align-items-center',
  switchRadio: 'custom-control-input',
  switchLabel: 'custom-control-label',
  switchControl: 'custom-control custom-radio custom-control-inline',
  row: 'row p-2 m-1',
  rule: 'border',
  ruleSet: 'border',
  invalidRuleSet: 'alert alert-danger',
  emptyWarning: 'text-danger mx-auto',
  operatorControl: 'form-control',
  operatorControlSize: 'col-auto pr-0',
  fieldControl: 'form-control',
  fieldControlSize: 'col-auto pr-0',
  entityControl: 'form-control',
  entityControlSize: 'col-auto pr-0',
  inputControl: 'form-control',
  inputControlSize: 'col-auto'
}

Customizing with Angular Material

Example of how you can completely customize the query component with another library like Angular Material. For the full example, please look at the source code provided in the demo.

app.component.html

<query-builder [(ngModel)]='query' [config]='config'>
  <ng-container *queryButtonGroup="let ruleset; let addRule=addRule; let addRuleSet=addRuleSet; let removeRuleSet=removeRuleSet">
    <button type="button" mat-button (click)="addRule()">+ Rule</button>
    <button type="button" mat-button (click)="addRuleSet()">+ Ruleset</button>
    <button type="button" mat-button (click)="removeRuleSet()">- Ruleset</button>
  </ng-container>
  <ng-container *queryRemoveButton="let rule; let removeRule=removeRule">
    <button type="button" mat-icon-button color="accent" (click)="removeRule(rule)">
      <mat-icon>remove</mat-icon>
    </button>
  </ng-container>
  <ng-container *querySwitchGroup="let ruleset">
    <mat-radio-group *ngIf="ruleset" [(ngModel)]="ruleset.condition">
      <mat-radio-button value="and">And</mat-radio-button>
      <mat-radio-button value="or">Or</mat-radio-button>
    </mat-radio-group>
  </ng-container>
  <ng-container *queryField="let rule; let fields=fields; let onChange=onChange">
    <mat-form-field>
      <mat-select [(ngModel)]="rule.field" (ngModelChange)="onChange($event, rule)">
        <mat-option *ngFor="let field of fields" [value]="field.value">{{field.name}}</mat-option>
      </mat-select>
    </mat-form-field>
  </ng-container>
  <ng-container *queryOperator="let rule; let operators=operators">
    <mat-form-field>
      <mat-select [(ngModel)]="rule.operator">
        <mat-option *ngFor="let value of operators" [value]="value">{{value}}</mat-option>
      </mat-select>
    </mat-form-field>
  </ng-container>
  <!-- Override input component for 'boolean' type -->
  <ng-container *queryInput="let rule; type: 'boolean'">
    <mat-checkbox [(ngModel)]="rule.value"></mat-checkbox>
  </ng-container>
  <!-- Override input component for 'category' type -->
  <ng-container *queryInput="let rule; let field=field; let options=options; type: 'category'">
    <mat-form-field>
      <mat-select [(ngModel)]="rule.value" [placeholder]="field.name">
        <mat-option *ngFor="let opt of options" [value]="opt.value">
          {{ opt.name }}
        </mat-option>
      </mat-select>
    </mat-form-field>
  </ng-container>
  ...
</query-builder>

Property Bindings Quick Reference

See documentation for more details on interfaces and properties.

query-builder

Structural Directives

Use these directives to replace different parts of query builder with custom components. See example, or demo to see how it's done.

queryInput

Used to replace the input component. Specify the type/queryInputType to match specific field types to input template.

queryOperator

Used to replace the query operator selection component.

queryField

Used this directive to replace the query field selection component.

queryEntity

Used to replace entity selection component.

querySwitchGroup

Useful for replacing the switch controls, for example the AND/OR conditions. More custom conditions can be specified by using this directive to override the default component.

queryArrowIcon

Directive to replace the expand arrow used in collapse/accordion mode of the query builder.

queryEmptyWarning

Can be used to customize the default empty warning message, alternatively can specify the emptyMessage property binding.

queryButtonGroup

For replacing the default button group for Add, Add Ruleset, Remove Ruleset buttons.

queryRemoveButton

Directive to replace the default remove single rule button component.

Dependencies

• Angular 8+

That's it.

Workflow

See the angular-library-seed project for details on how to build and run tests.