server/models/utils.ts

   1 // Translate for example "-name" to [ [ 'name', 'DESC' ], [ 'id', 'ASC' ] ]
   2 function getSort (value: string, lastSort: string[] = [ 'id', 'ASC' ]) {
   3   let field: string
   4   let direction: 'ASC' | 'DESC'
   5
   6   if (value.substring(0, 1) === '-') {
   7     direction = 'DESC'
   8     field = value.substring(1)
   9   } else {
  10     direction = 'ASC'
  11     field = value
  12   }
  13
  14   return [ [ field, direction ], lastSort ]
  15 }
  16
  17 function getSortOnModel (model: any, value: string, lastSort: string[] = [ 'id', 'ASC' ]) {
  18   let [ firstSort ] = getSort(value)
  19
  20   if (model) return [ [ model, firstSort[0], firstSort[1] ], lastSort ]
  21   return [ firstSort, lastSort ]
  22 }
  23
  24 function throwIfNotValid (value: any, validator: (value: any) => boolean, fieldName = 'value') {
  25   if (validator(value) === false) {
  26     throw new Error(`"${value}" is not a valid ${fieldName}.`)
  27   }
  28 }
  29
  30 // ---------------------------------------------------------------------------
  31
  32 export {
  33   getSort,
  34   getSortOnModel,
  35   throwIfNotValid
  36 }