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

npm install angular2-query-builder

Demo

Play with the demo here.

Editable demo

See the Plunker

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 changeField=changeField">
    <mat-form-field>
      <mat-select [(ngModel)]="rule.field" (ngModelChange)="changeField($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

|Name|Type|Required|Default|Description| |:--- |:--- |:--- |:--- |:--- | |allowRuleset|boolean|Optional|true| Displays the + Ruleset button if true. | |allowCollapse|boolean|Optional|false| Enables collapsible rule sets if true. (See Demo) | |classNames|object|Optional|| CSS class names for different child elements in query-builder component. | |config|QueryBuilderConfig|Required|| Configuration object for the main component. | |data|Ruleset|Optional|| (Use ngModel or value instead.) | |emptyMessage|string|Optional|| Message to display for an empty Ruleset if empty rulesets are not allowed. | |ngModel| Ruleset |Optional|| Object that stores the state of the component. Supports 2-way binding. | |operatorMap|{ [key: string]: string[] }|Optional|| Used to map field types to list of operators. | |value| Ruleset |Optional|| Object that stores the state of the component. |

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.

|Context Name|Type|Description| |:--- |:--- |:--- | |$implicit|Rule|Current rule object which contains the field, value, and operator| |field|Field|Current field object which contains the field's value and name| |options|Option[]|List of options for the field, returned by getOptions| |onChange|() => void|Callback to handle changes to the input component|

queryOperator

Used to replace the query operator selection component.

|Context Name|Type|Description| |:--- |:--- |:--- | |$implicit|Rule|Current rule object which contains the field, value, and operator| |operators|string[]|List of operators for the field, returned by getOperators| |onChange|() => void|Callback to handle changes to the operator component| |type|string|Input binding specifying the field type mapped to this input template, specified using syntax in above example|

queryField

Used this directive to replace the query field selection component.

|Context Name|Type|Description| |:--- |:--- |:--- | |$implicit|Rule|Current rule object which contains the field, value, and operator| |getFields|(entityName: string) => void|Get the list of fields corresponding to an entity| |fields|Field[]|List of fields for the component, specified by config| |onChange|(fieldValue: string, rule: Rule) => void|Callback to handle changes to the field component|

queryEntity

Used to replace entity selection component.

|Context Name|Type|Description| |:--- |:--- |:--- | |$implicit|Rule|Current rule object which contains the field, value, and operator| |entities|Entity[]|List of entities for the component, specified by config| |onChange|(entityValue: string, rule: Rule) => void|Callback to handle changes to the entity 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.

|Context Name|Type|Description| |:--- |:--- |:--- | |$implicit|RuleSet|Current rule set object which contain a list of child rules| |onChange|() => void|Callback to handle changes to the switch group component|

queryArrowIcon

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

|Context Name|Type|Description| |:--- |:--- |:--- | |$implicit|RuleSet|Current rule set object which contain a list of child rules|

queryEmptyWarning

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

|Context Name|Type|Description| |:--- |:--- |:--- | |$implicit|RuleSet|Current rule set object which contain a list of child rules| |message|string|Value passed to emptyMessage|

queryButtonGroup

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

|Context Name|Type|Description| |:--- |:--- |:--- | |$implicit|RuleSet|Current rule set object which contain a list of child rules| |addRule|() => void|Function to handle adding a new rule| |addRuleSet|() => void|Function to handle adding a new rule set| |removeRuleSet|() => void|Function to handle removing the current rule set|

queryRemoveButton

Directive to replace the default remove single rule button component.

|Context Name|Type|Description| |:--- |:--- |:--- | |$implicit|Rule|Current rule object which contains the field, value, and operator| |removeRule|(rule: Rule) => void|Function to handle removing a rule|

Dependencies

• Angular 4+

That's it.

Workflow

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