feat(core): add null query param control to request method of rest service

#4129

npm/ng-packs/apps/dev-app/src/app/app.module.ts

@@ -23,6 +23,8 @@ const LOGGERS = [NgxsLoggerPluginModule.forRoot({ disabled: false })];
     AppRoutingModule,
     CoreModule.forRoot({
       environment,
+      sendNullsAsQueryParam: false,
+      skipGetAppConfiguration: false,
     }),
     ThemeSharedModule.forRoot(),
     AccountConfigModule.forRoot({ redirectUrl: '/' }),

npm/ng-packs/packages/core/src/lib/services/rest.service.ts

@@ -1,5 +1,5 @@
 import { HttpClient, HttpRequest } from '@angular/common/http';
-import { Injectable } from '@angular/core';
+import { Injectable, Inject } from '@angular/core';
 import { Store } from '@ngxs/store';
 import { Observable, throwError } from 'rxjs';
 import { catchError } from 'rxjs/operators';
@@ -7,12 +7,18 @@ import { RestOccurError } from '../actions/rest.actions';
 import { Rest } from '../models/rest';
 import { ConfigState } from '../states/config.state';
 import { isUndefinedOrEmptyString } from '../utils/common-utils';
+import { ABP } from '../models/common';
+import { CORE_OPTIONS } from '../tokens/options.token';
 
 @Injectable({
   providedIn: 'root',
 })
 export class RestService {
-  constructor(private http: HttpClient, private store: Store) {}
+  constructor(
+    @Inject(CORE_OPTIONS) private options: ABP.Root,
+    private http: HttpClient,
+    private store: Store,
+  ) {}
 
   private getApiFromStore(apiName: string): string {
     return this.store.selectSnapshot(ConfigState.getApiUrl(apiName));
@@ -41,7 +47,12 @@ export class RestService {
           params: Object.keys(params).reduce((acc, key) => {
             const value = params[key];
 
-            if (!isUndefinedOrEmptyString(value)) acc[key] = value;
+            if (
+              !isUndefinedOrEmptyString(value) &&
+              (value === null ? this.options.sendNullsAsQueryParam : true)
+            ) {
+              acc[key] = value;
+            }
 
             return acc;
           }, {}),