misc: add support for lazy password fields (#38882)

tests/test_formdata.py

@@ -564,6 +564,7 @@ def variable_test_data(pub):
         fields.StringField(id='10', label='number1', varname='term1'),
         fields.StringField(id='11', label='number2', varname='term2'),
         fields.StringField(id='12', label='float1', varname='value'),
+        fields.PasswordField(id='13', label='pwd', varname='pwd'),
     ]
     formdef.workflow_roles = {'_receiver': role.id}
     formdef.geolocations = {'base': 'Base'}
@@ -587,6 +588,11 @@ def variable_test_data(pub):
         '10': '3',
         '11': '4',
         '12': '3.14',
+        '13': {
+            'cleartext': 'a',
+            'md5': '0cc175b9c0f1b6a831c399e269772661',
+            'sha1': '86f7e437faa5a7fce15d1ddcb9eaeaea377667b8'
+        },
     }
     formdata.data['5'].receive([b'hello world'])
     formdata.geolocations = {'base': {'lat': 1, 'lon': 2}}
@@ -833,6 +839,7 @@ def test_lazy_variables(pub, variable_test_data):
         for item in enumerate(context['form_var_foo_foo']):
             assert item in [(0, 'b'), (1, 'a'), (2, 'r')]
         assert context['form_var_foo_foo_baz_baz'] == 'other'
+        assert context['form_var_pwd_cleartext'] == 'a'
 
 def test_lazy_variables_missing(pub, variable_test_data):
     formdef =  FormDef.select()[0]

wcs/variables.py

@@ -480,6 +480,8 @@ class LazyFormDataVar(object):
             return LazyFieldVarDate(self._data, field, self._formdata)
         if field.key == 'map':
             return LazyFieldVarMap(self._data, field, self._formdata)
+        if field.key == 'password':
+            return LazyFieldVarPassword(self._data, field, self._formdata)
 
         return LazyFieldVar(self._data, field, self._formdata)
 
@@ -683,6 +685,15 @@ class LazyFieldVarMap(LazyFieldVar):
         return self._data.get(self._field.id).split(*args, **kwargs)
 
 
+class LazyFieldVarPassword(LazyFieldVar):
+    def __getitem__(self, key):
+        # get subpart (cleartext, md5, sha1) if it exists
+        field_value = self._data.get(self._field.id)
+        if key in field_value:
+            return field_value[key]
+        return super(LazyFieldVarPassword, self)._getitem__(key)
+
+
 class LazyUser(object):
     def __init__(self, user):
         self._user = user