If I have an array of the object where I'm storing all the search filters selected by a user and here is its structure: 

```
export const filterDataObject = [{
    date: '',
    tid: '',
    className: '',
    userName: '',
    category: [],
    limit: '50',
    sort: 'acs'
}];

```

the REST call should be for example something like that :

```
   http://localhost:1234/api/query? 
_filter=tid%3Dcdfg&_limit=50&_sort=asc

```

while \_filter is collecting all params but limit and sort 

How can I pass the result array as params to my httpClient rest request especially the category array ?