title: Search calendarview events by title and attendee email with Microsoft Graph
body: <p>I am trying to implement a search on top of the Microsoft Graph calendarview API to provide feature parity with Google Calendar search, where the search term will return results with a matching event subject, or attendee name/email.</p>
  <p>I am able to implement subject search with</p>
  <p><code>$filter=contains(subject, '&lt;query'&gt;)</code></p>
  <p>however, I have been unable to figure out how to return results with matching attendee name/email.</p>
  <p>I have tried</p>
  <p><code>$filter=contains(subject, '&lt;term&gt;') OR attendees/any(a: contains(a/emailAddress/address, '&lt;term&gt;'))</code></p>
  <p>but get the error:</p>
  <blockquote>
  <p>The query filter contains one or more invalid nodes.</p>
  </blockquote>
  <p>I tried using eq instead</p>
  <p><code>$filter=contains(subject, '&lt;term&gt;') OR attendees/any(a: a/emailAddress/address eq '&lt;term&gt;')</code></p>
  <p>but then get the error:</p>
  <blockquote>
  <p>An internal server error occurred. The operation failed.</p>
  </blockquote>
  <p>I also tried using</p>
  <p><code>$search=&quot;&lt;term&gt;&quot;</code></p>
  <p>this returns no error, but doesn't filter the results at all.</p>
  <p>Is it possible to search for calendar events with matching title or attendee, using this, or another, api?</p>