client/src/app/shared/rest/rest.service.ts

   1 import { Injectable } from '@angular/core'
   2 import { HttpParams } from '@angular/common/http'
   3 import { SortMeta } from 'primeng/components/common/sortmeta'
   4
   5 import { RestPagination } from './rest-pagination'
   6
   7 @Injectable()
   8 export class RestService {
   9
  10   addRestGetParams (params: HttpParams, pagination?: RestPagination, sort?: SortMeta | string) {
  11     let newParams = params
  12
  13     if (pagination !== undefined) {
  14       newParams = newParams.set('start', pagination.start.toString())
  15                            .set('count', pagination.count.toString())
  16     }
  17
  18     if (sort !== undefined) {
  19       let sortString = ''
  20
  21       if (typeof sort === 'string') {
  22         sortString = sort
  23       } else {
  24         const sortPrefix = sort.order === 1 ? '' : '-'
  25         sortString = sortPrefix + sort.field
  26       }
  27
  28       newParams = newParams.set('sort', sortString)
  29     }
  30
  31     return newParams
  32   }
  33
  34 }