Fixed Q-object list query issue

mongoengine/queryset.py

@@ -36,7 +36,9 @@ class Q(object):
     OR = '||'
     AND = '&&'
     OPERATORS = {
-        'eq': 'this.%(field)s == %(value)s',
+        'eq': ('((this.%(field)s instanceof Array) && '
+               '  this.%(field)s.indexOf(%(value)s) != -1) ||'
+               ' this.%(field)s == %(value)s'),
         'ne': 'this.%(field)s != %(value)s',
         'gt': 'this.%(field)s > %(value)s',
         'gte': 'this.%(field)s >= %(value)s',
@@ -62,7 +64,8 @@ class Q(object):
         if not other.query[0]:
             return self
         if self.query[0]:
-            obj.query = ['('] + copy.deepcopy(self.query) + [op] + copy.deepcopy(other.query) + [')']
+            obj.query = (['('] + copy.deepcopy(self.query) + [op] +
+                         copy.deepcopy(other.query) + [')'])
         else:
             obj.query = copy.deepcopy(other.query)
         return obj
@@ -111,11 +114,13 @@ class Q(object):
                 value, field_js = self._build_op_js(op, key, value, value_name)
                 js_scope[value_name] = value
                 js.append(field_js)
+        print ' && '.join(js)
         return ' && '.join(js)
 
     def _build_op_js(self, op, key, value, value_name):
         """Substitute the values in to the correct chunk of Javascript.
         """
+        print op, key, value, value_name
         if isinstance(value, RE_TYPE):
             # Regexes are handled specially
             if op.strip('$') == 'ne':

tests/queryset.py

@@ -503,6 +503,22 @@ class QuerySetTest(unittest.TestCase):
         obj = self.Person.objects(Q(name__ne=re.compile('^Gui'))).first()
         self.assertEqual(obj, None)
 
+    def test_q_lists(self):
+        """Ensure that Q objects query ListFields correctly.
+        """
+        class BlogPost(Document):
+            tags = ListField(StringField())
+
+        BlogPost.drop_collection()
+
+        BlogPost(tags=['python', 'mongo']).save()
+        BlogPost(tags=['python']).save()
+
+        self.assertEqual(len(BlogPost.objects(Q(tags='mongo'))), 1)
+        self.assertEqual(len(BlogPost.objects(Q(tags='python'))), 2)
+
+        BlogPost.drop_collection()
+
     def test_exec_js_query(self):
         """Ensure that queries are properly formed for use in exec_js.
         """
@@ -1172,10 +1188,15 @@ class QTest(unittest.TestCase):
         """
         q = Q()
         examples = [
-            ({'name': 'test'}, 'this.name == i0f0', {'i0f0': 'test'}),
+            
+            ({'name': 'test'}, ('((this.name instanceof Array) &&   '
+             'this.name.indexOf(i0f0) != -1) || this.name == i0f0'), 
+             {'i0f0': 'test'}),
             ({'age': {'$gt': 18}}, 'this.age > i0f0o0', {'i0f0o0': 18}),
             ({'name': 'test', 'age': {'$gt': 18, '$lte': 65}},
-             'this.age <= i0f0o0 && this.age > i0f0o1 && this.name == i0f1',
+              ('this.age <= i0f0o0 && this.age > i0f0o1 && '
+               '((this.name instanceof Array) &&   '
+               'this.name.indexOf(i0f1) != -1) || this.name == i0f1'),
              {'i0f0o0': 65, 'i0f0o1': 18, 'i0f1': 'test'}),
         ]
         for item, js, scope in examples: