Enable hidden field attribute to be set to false

The error has occured when some field in app UI declaration had
hidden parameter set to false.

Change-Id: I4591f4c72354ab1e8a262573fec5f4e91003b1ff
Closes-Bug: #1368120

muranodashboard/dynamic_ui/forms.py

@@ -105,8 +105,11 @@ def _collect_fields(field_specs, form_name, service):
         elif isinstance(spec, basestring) and helpers.is_localizable(keys):
             return key, _(spec)
         else:
-            if key == 'hidden' and spec is True:
+            if key == 'hidden':
+                if spec:
                     return 'widget', forms.HiddenInput
+                else:
+                    return 'widget', None
             elif key == 'regexp_validator':
                 return 'validators', [helpers.prepare_regexp(spec)]
             else:

muranodashboard/tests/unit/dynamic_ui/test_services.py

@@ -0,0 +1,63 @@
+#    Copyright (c) 2015 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+import testtools
+
+from django import forms
+from muranodashboard.dynamic_ui import services
+
+
+class TestService(testtools.TestCase):
+    def setUp(self):
+        super(TestService, self).setUp()
+
+        self.application = {'?': {'type': 'test.App'}}
+
+    def test_service_field_hidden_false(self):
+        """When Service class instantiated with some field having `hidden`
+        attribute set to `false` - the generated form field should have
+        widget different from `HiddenInput`.
+
+        Bug: #1368120
+        """
+        ui = [{
+            'appConfiguration': {'fields': [{'hidden': False, 'type': 'string',
+                                             'name': 'title'}]}
+        }]
+
+        service = services.Service(cleaned_data={},
+                                   application=self.application,
+                                   forms=ui)
+        form = next(e for e in service.forms
+                    if e.__name__ == 'appConfiguration')
+        field = form.base_fields['title']
+
+        self.assertNotIsInstance(field.widget, forms.HiddenInput)
+
+    def test_service_field_hidden_true(self):
+        """`hidden: true` in UI definition results to HiddenInput in Django
+        form.
+        """
+        ui = [{
+            'appConfiguration': {'fields': [{'hidden': True, 'type': 'string',
+                                             'name': 'title'}]}
+        }]
+
+        service = services.Service(cleaned_data={},
+                                   application=self.application,
+                                   forms=ui)
+        form = next(e for e in service.forms
+                    if e.__name__ == 'appConfiguration')
+        field = form.base_fields['title']
+
+        self.assertIsInstance(field.widget, forms.HiddenInput)