pretty-operator.service.ts

import { Injectable } from '@angular/core';

@Injectable()
export class PrettyOperatorService {
    getPrettyOperator(operator: string): string {
        switch (operator) {
            case 'eq':
                return '=';
            case 'neq':
                return '≠';
            case 'gt':
                return '>';
            case 'gte':
                return '>=';
            case 'lt':
                return '<';
            case 'lte':
                return '<=';
            case 'lk':
                return 'like';
            case 'nlk':
                return 'not like';
            case 'in':
                return 'in';
            case 'nin':
                return 'not in';
            default:
                return operator;
        }
    }
}