feat: added search on key #297

Author: SDAdham

projects/ngx-select-dropdown/src/lib/pipes/filter-by.pipe.ts

@@ -7,7 +7,7 @@ import { Pipe, PipeTransform } from '@angular/core';
    name: 'filterBy'
 })
 export class FilterByPipe implements PipeTransform {
-   public transform(array: any[], searchText?: string, keyName?: string) {
+   public transform(array: any[], searchText?: string, keyName?: string | string[]) {
       if (!array || !searchText || !Array.isArray(array)) {
          return array;
       }
@@ -27,8 +27,16 @@ export class FilterByPipe implements PipeTransform {
          });
       } else {
          return array.filter((item: any) => {
-            if (typeof item[keyName] !== 'object' && item[keyName].toString().toLowerCase().indexOf(searchText.trim().toLowerCase()) > -1) {
-               return true;
+            if (typeof keyName === 'string') {
+               if (typeof item[keyName] !== 'object' && item[keyName].toString().toLowerCase().indexOf(searchText.trim().toLowerCase()) > -1) {
+                  return true;
+               }
+            } else {
+               for (const key of keyName) {
+                  if (typeof item[key] !== 'object' && item[key].toString().toLowerCase().indexOf(searchText.trim().toLowerCase()) > -1) {
+                     return true;
+                  }
+               }
             }
             return false;
          });

projects/ngx-select-dropdown/src/lib/types/ngx-select-dropdown.types.ts

@@ -9,7 +9,7 @@ export interface NgxDropdownConfig {
   moreText?: string;
   noResultsFound?: string;
   searchPlaceholder?: string;
-  searchOnKey?: string;
+  searchOnKey?: string | string[];
   clearOnSelection?: boolean;
   inputDirection?: string;
   selectAllLabel?: string;