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POMongoengine list filtering
 

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    <p>I have a list of required perms in some mongoengine's documents and I would like filtering on it.</p> <p>Consider this Document:</p> <pre class="lang-python prettyprint-override"><code>class Entry(Document): required_perms = ListField(StringField()) e = Entry(required_perms=['create', 'update']) e.save() </code></pre> <p>Here are some usecases:</p> <pre class="lang-python prettyprint-override"><code>all_perms = ['create', 'update', 'delete'] Entry.objects.filter(required_perms__in=all_perms) [&lt;Entry: Entry object&gt;] # Returned because 'create' OR 'update' are in required_perms Entry.objects.filter(required_perms__in=['create', 'delete']) [&lt;Entry: Entry object&gt;] # Returned because 'create' is in required_perms Entry.objects.filter(required_perms__all=all_perms) [] # Not returned because 'delete' is not in required_perms </code></pre> <p>When querying with <code>$in</code>, I get the <code>Entry</code>, because at least one of the string is in the list. <code>$all</code> does not cover my needs because according to the doc it is the reverse of what I'm intending to do: <em>"every item in list of values provided is in array"</em> ; and I would like: <em>"every item in array is in list of provided values"</em>.</p> <p>So, I would like to request something <em>like</em> this:</p> <pre class="lang-python prettyprint-override"><code>Entry.objects.filter(everyoneof__required_perms__in=['create', 'delete']) </code></pre> <p>I tricked this to clearly explain it but this is ugly, not dynamic and <em>should</em> not be used:</p> <pre class="lang-python prettyprint-override"><code>Entry.objects(Q(required_perms__0__in=all_perms) &amp; Q(required_perms__1__in=all_perms)) """ Can be tested with: all_perms = ['create', 'delete'] -&gt; No results and: all_perms = ['create', 'update', 'delete'] -&gt; 1 result """ </code></pre> <p>Is there a way to do something like that ? Maybe with a raw query ?</p> <p>Thanks.</p>
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