custom root type serialization format changed.

Author: dapper91

examples/snippets/model_root_type.py

@@ -1,35 +1,40 @@
-from pydantic_xml import BaseXmlModel, attr, element
+from typing import List
 
+from pydantic import HttpUrl
 
-# [model-start]
-class CompanyInfo(BaseXmlModel):
-    trade_name: str = attr(name='trade-name')
-    website: str = element()
+from pydantic_xml import BaseXmlModel, element
 
-    ...  # data validation logic
 
+# [model-start]
+class Socials(BaseXmlModel, tag='socials'):
+    __root__: List[HttpUrl] = element(tag='social')
 
-class Company(BaseXmlModel, tag='company'):
-    __root__: CompanyInfo
 
-    ...  # business logic
+class Contacts(BaseXmlModel, tag='contacts'):
+    __root__: Socials
 # [model-end]
 
 
 # [xml-start]
 xml_doc = '''
-<company trade-name="SpaceX">
-    <website>https://www.spacex.com</website>
-</company>
+<contacts>
+    <socials>
+        <social>https://www.linkedin.com/company/spacex</social>
+        <social>https://twitter.com/spacex</social>
+        <social>https://www.youtube.com/spacex</social>
+    </socials>
+</contacts>
 '''  # [xml-end]
 
 # [json-start]
 json_doc = '''
-{
-    "trade_name": "SpaceX",
-    "website": "https://www.spacex.com"
-}
+[
+    "https://www.linkedin.com/company/spacex",
+    "https://twitter.com/spacex",
+    "https://www.youtube.com/spacex"
+]
 '''  # [json-end]
 
-env = Company.from_xml(xml_doc)
-assert env == Company.parse_raw(json_doc)
+contacts = Contacts.from_xml(xml_doc)
+
+assert contacts == Contacts.parse_raw(json_doc)

pydantic_xml/serializers/factories/model.py

@@ -171,10 +171,8 @@ def build(
     ) -> 'Serializer':
         if field_location is Location.ELEMENT:
             return cls.ElementSerializer(model, model_field, ctx)
-        elif not ctx.parent_is_root and field_location is Location.MISSING:
+        elif field_location is Location.MISSING:
             return cls.ElementSerializer(model, model_field, ctx)
-        elif ctx.parent_is_root and field_location is Location.MISSING:
-            return cls.DeferredSerializer(model_field)
         elif field_location is Location.ATTRIBUTE:
             raise errors.ModelFieldError(
                 model.__name__, model_field.name, "attributes of model type are not supported",

tests/test_forward_ref.py

@@ -249,13 +249,15 @@ def test_root_model_forward_ref():
     class TestModel(BaseXmlModel, tag='model1'):
         __root__: 'TestSubModel'
 
-    class TestSubModel(BaseXmlModel):
+    class TestSubModel(BaseXmlModel, tag='model2'):
         __root__: int
 
     TestModel.update_forward_refs(**locals())
 
     xml = '''
-    <model1>1</model1>
+    <model1>
+        <model2>1</model2>
+    </model1>
     '''
 
     actual_obj = TestModel.from_xml(xml)

tests/test_submodels.py

@@ -79,14 +79,16 @@ class TestModel(BaseXmlModel, tag='model1'):
 
 
 def test_root_submodel_root_extraction():
-    class TestSubModel(BaseXmlModel):
+    class TestSubModel(BaseXmlModel, tag='model2'):
         __root__: int
 
     class TestModel(BaseXmlModel, tag='model1'):
         __root__: TestSubModel
 
     xml = '''
-    <model1>1</model1>
+    <model1>
+        <model2>1</model2>
+    </model1>
     '''
 
     actual_obj = TestModel.from_xml(xml)
@@ -101,7 +103,7 @@ class TestModel(BaseXmlModel, tag='model1'):
 
 
 def test_nested_root_submodel_element_extraction():
-    class TestSubModel2(BaseXmlModel):
+    class TestSubModel2(BaseXmlModel, tag='model3'):
         __root__: int
 
     class TestSubModel1(BaseXmlModel):
@@ -112,7 +114,9 @@ class TestModel(BaseXmlModel, tag='model1'):
 
     xml = '''
     <model1>
-        <element1>1</element1>
+        <element1>
+            <model3>1</model3>
+        </element1>
     </model1>
     '''