How to filter multiple metadata fields when using the SharePoint REST API

To place a filter on multiple metadata fields when you're leveraging the SharePoint REST API to extract information from a SharePoint list or document library, you can utilize the $filter operator; however, you'll need to be careful with how you structure the query or you'll get an error when submitting the request.

To combine these filters, you will need to utilize parentheses to seperate each unique filter operator.  To demonstrate this technique, I'm going to place two filters in my query that will be used to filter on two different metadata fields:

http://SharePointWebApp/SharePointSite/_api/web/lists/getbytitle('Documents')/items?$select=Name,LinkFilename&$filter=((Field1%20eq%20'FilterValueOnField1')%20and%20(Field2%20eq%20'FilterValueOnField2'))&$orderby=Name%20asc

Essentially, the basics of the REST call is that it will obtain the the Name and LinkFilename fields from documents contained in the default Documents library and order the results alphabetically. These results will be filtered so that only documents that have a value in Field1 equal to the specified value of FilterValueOnField1 and a value in Field2 equal to the specified value of FilterValueOnField2.