Ngx-Bootstrap - Rating

ngx-bootstrap rating component provides a configurable rating component, a star bar by default.

RatingComponent

selector

rating

Inputs

customTemplate − TemplateRef<any>, custom template for icons.

max − number, no. of icons, default: 5.

readonly − boolean, if true will not react on any user events.

titles − string[], array of icons titles, default: ([1, 2, 3, 4, 5])

Outputs

onHover − fired when icon selected, $event:number equals to selected rating.

onLeave − fired when icon selected, $event:number equals to previous rating value.

Example

As we re going to use a rating, We ve to update app.module.ts used in ngx-bootstrap ProgressBar chapter to use RatingModule, RatingConfig.

Update app.module.ts to use the RatingModule and RatingConfig.

app.module.ts

import { BrowserModule } from  @angular/platform-browser ;
import { NgModule } from  @angular/core ;
import { BrowserAnimationsModule } from  @angular/platform-browser/animations ;
import { AppComponent } from  ./app.component ;
import { TestComponent } from  ./test/test.component ;
import { AccordionModule } from  ngx-bootstrap/accordion ;
import { AlertModule,AlertConfig } from  ngx-bootstrap/alert ;
import { ButtonsModule } from  ngx-bootstrap/buttons ;
import { FormsModule } from  @angular/forms ;
import { CarouselModule } from  ngx-bootstrap/carousel ;
import { CollapseModule } from  ngx-bootstrap/collapse ;
import { BsDatepickerModule, BsDatepickerConfig } from  ngx-bootstrap/datepicker ;
import { BsDropdownModule,BsDropdownConfig } from  ngx-bootstrap/dropdown ;
import { PaginationModule,PaginationConfig } from  ngx-bootstrap/pagination ;
import { PopoverModule, PopoverConfig } from  ngx-bootstrap/popover ;
import { ProgressbarModule,ProgressbarConfig } from  ngx-bootstrap/progressbar ;
import { RatingModule, RatingConfig } from  ngx-bootstrap/rating ;

@NgModule({
   declarations: [
      AppComponent,
      TestComponent
   ],
   imports: [
      BrowserAnimationsModule,
      BrowserModule,
      AccordionModule,
      AlertModule,
      ButtonsModule,
      FormsModule,
      CarouselModule,
      CollapseModule,
      BsDatepickerModule.forRoot(),
      BsDropdownModule,
      ModalModule,
      PaginationModule,
      PopoverModule,
      ProgressbarModule,
      RatingModule
   ],
   providers: [AlertConfig, 
      BsDatepickerConfig, 
      BsDropdownConfig,
      BsModalService,
      PaginationConfig,
      ProgressbarConfig,
      RatingConfig],
   bootstrap: [AppComponent]
})
export class AppModule { }

Update test.component.html to use the rating.

test.component.html

<rating [(ngModel)]="value" 
   [max]="max" 
   [readonly]="false" 
   [titles]="[ one , two , three , four ]"></rating>

Update test.component.ts for corresponding variables and methods.

test.component.ts

import { Component, OnInit } from  @angular/core ;

@Component({
   selector:  app-test ,
   templateUrl:  ./test.component.html ,
   styleUrls: [ ./test.component.css ]
})
export class TestComponent implements OnInit {
   max: number = 10;
   value: number = 5;
   constructor() {}
   ngOnInit(): void {
   } 
}

Build and Serve

Run the following command to start the angular server.

ng serve

Once server is up and running. Open http://localhost:4200. Cpck on Open modal button and verify the following output.