Initial commit: OCA Technical packages (595 packages)

odoo-bringout-oca-rest-framework-datamodel/datamodel/fields.py

@@ -0,0 +1,50 @@
+# Copyright 2019 ACSONE SA/NV
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html)
+"""
+
+Fields
+=====
+
+Create a single place for all fields defined for datamodels
+
+"""
+import logging
+
+from .core import Datamodel
+
+_logger = logging.getLogger(__name__)
+
+try:
+    from marshmallow.fields import *  # noqa: F403,F401
+    from marshmallow.fields import Nested
+except ImportError:
+    Nested = object
+    _logger.debug("Cannot import 'marshmallow'.")
+
+
+class NestedModel(Nested):
+    def __init__(self, nested, **kwargs):
+        self.datamodel_name = nested
+        super(NestedModel, self).__init__(None, **kwargs)
+
+    @property
+    def schema(self):
+        if not self.nested:
+            # Get the major parent to avoid error of _env does not exist
+            super_parent = None
+            parent = self
+            while not super_parent:
+                if not hasattr(parent, "parent"):
+                    super_parent = parent
+                    break
+                parent = parent.parent
+            self.nested = super_parent._env.datamodels[
+                self.datamodel_name
+            ].__schema_class__
+            self.nested._env = super_parent._env
+        return super(NestedModel, self).schema
+
+    def _deserialize(self, value, attr, data, **kwargs):
+        if isinstance(value, Datamodel):
+            return value
+        return super(NestedModel, self)._deserialize(value, attr, data, **kwargs)