Remove null params in HttpParams
You should filter them client side using JavaScript's delete (MDN) keyword if they have a value of undefined (which is different than the key not being in the object at all):
if (queryObject.secsymb === undefined) { delete queryObject.secsymb;}and then use a default method parameter in your controller method:
GetExposureRunsData(int id, string fund, SecType sectype, string secsymb = null)If you ensure that the query string parameter is not included then your parameter will default to null
That's what I usually do. Works like a charm.
getDocumentsReport(filter: object) { let params = new HttpParams(); Object.keys(filter).forEach( key => filter[key] && (params = params.append(key, filter[key])) ); return this.http.get<object>( environment.apiServer + '/api/reports/documents', { params } ); }
You can try this:
this.httpClient.get('../api/path', { params: Object.entries(queryParameterObject).reduce((queryParams, [key, value]) => queryParams.set(key, value), new HttpParams());});It worked for me.