Building a custom Angular 6 pipe for generating a summary of a text snippet

Question

Building a custom Angular 6 pipe for generating a summary of a text snippet

Looking to create a pipe that limits the text box to only show the first 150 characters of the description. If the description is shorter than that, it should display the entire description followed by (...)

Currently working on this:

 export class TeaserPipe implements PipeTransform {

  transform(value: any, args?: any): any {
    let teaser = "";
    if(teaser.length >= 150){

    }
    return teaser;
  }
}

Need more information about custom pipes to fully understand. Any insights would be appreciated!

angular typescript pipe angular6

Answer 1

Answer №1

If you're looking for a customized solution beyond CSS, consider implementing a custom pipe like the following:

import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
  name: 'truncate'
})
export class TruncatePipe implements PipeTransform {

    transform(value: any, limit: number = 10, trail: string = '...'): string {
        if (value == null) {
             return "";
        }
        return value.length > limit ? value.substring(0, limit) + trail : value;
    }

}

To use this in your template, you can incorporate it like so:

{{ variablegoeshere | truncate : 150 : '...' }}

Answer 2

If you're looking for a customized solution beyond CSS, consider implementing a custom pipe like the following:

import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
  name: 'truncate'
})
export class TruncatePipe implements PipeTransform {

    transform(value: any, limit: number = 10, trail: string = '...'): string {
        if (value == null) {
             return "";
        }
        return value.length > limit ? value.substring(0, limit) + trail : value;
    }

}

To use this in your template, you can incorporate it like so:

{{ variablegoeshere | truncate : 150 : '...' }}

Building a custom Angular 6 pipe for generating a summary of a text snippet

Answer №1

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