title: How to query mongoengine by using contains in list?
body: <p>If I have a collection with a list field similar to the below.</p>
  <pre><code>class Post(Document):
     tags = ListField(StringField())
  </code></pre>
  <p>Let's say I have a post with the tags: interesting, funny.</p>
  <p>And if I want to search for posts with tags fulfill any of the search terms, how should I do?</p>
  <p>Say if I put in the search terms &quot;interesting&quot; and &quot;fantastic&quot;, the above post should be there in the result set.</p>
  <p>I tried to read through <a href="https://mongoengine-odm.readthedocs.org/en/latest/guide/querying.html#query-operators" rel="nofollow noreferrer">documentation</a> but seems like there is no such operator.  &quot;all&quot; and &quot;in&quot; are similar but can't perform what I want.</p>