diff --git a/ormar/models/helpers/validation.py b/ormar/models/helpers/validation.py
index d861911..c557de4 100644
--- a/ormar/models/helpers/validation.py
+++ b/ormar/models/helpers/validation.py
@@ -1,8 +1,9 @@
 import datetime
 import decimal
+import numbers
 import uuid
 from enum import Enum
-from typing import Any, Dict, List, TYPE_CHECKING, Tuple, Type
+from typing import Any, Dict, List, Set, TYPE_CHECKING, Tuple, Type, Union
 
 try:
     import orjson as json
@@ -138,15 +139,79 @@ def generate_model_example(model: Type["Model"], relation_map: Dict = None) -> D
         if not field.is_relation:
             example[name] = field.__sample__
         elif isinstance(relation_map, dict) and name in relation_map:
-            value = generate_model_example(
-                field.to, relation_map=relation_map.get(name, {})
+            example[name] = get_nested_model_example(
+                name=name, field=field, relation_map=relation_map
             )
-            new_value = [value] if field.is_multi or field.virtual else value
-            example[name] = new_value
+    to_exclude = {name for name in model.Meta.model_fields}
+    pydantic_repr = generate_pydantic_example(pydantic_model=model, exclude=to_exclude)
+    example.update(pydantic_repr)
 
     return example
 
 
+def get_nested_model_example(
+    name: str, field: "BaseField", relation_map: Dict
+) -> Union[List, Dict]:
+    """
+    Gets representation of nested model.
+
+    :param name: name of the field to follow
+    :type name: str
+    :param field: ormar field
+    :type field: BaseField
+    :param relation_map: dict with relation map
+    :type relation_map: Dict
+    :return: nested model or list of nested model repr
+    :rtype: Union[List, Dict]
+    """
+    value = generate_model_example(field.to, relation_map=relation_map.get(name, {}))
+    new_value: Union[List, Dict] = [value] if field.is_multi or field.virtual else value
+    return new_value
+
+
+def generate_pydantic_example(
+    pydantic_model: Type[pydantic.BaseModel], exclude: Set = None
+) -> Dict:
+    """
+    Generates dict with example.
+
+    :param pydantic_model: model to parse
+    :type pydantic_model: Type[pydantic.BaseModel]
+    :param exclude: list of fields to exclude
+    :type exclude: Optional[Set]
+    :return: dict with fields and sample values
+    :rtype: Dict
+    """
+    example: Dict[str, Any] = dict()
+    exclude = exclude or set()
+    for name in pydantic_model.__fields__:
+        if name not in exclude:
+            field = pydantic_model.__fields__[name]
+            type_ = field.type_
+            if getattr(field.outer_type_, "_name", None) == "List":
+                example[name] = [get_pydantic_example_repr(type_)]
+            else:
+                example[name] = get_pydantic_example_repr(type_)
+    return example
+
+
+def get_pydantic_example_repr(type_: Any) -> Any:
+    """
+    Gets sample representation of pydantic field for example dict.
+
+    :param type_: type of pydantic field
+    :type type_: Any
+    :return: representation to include in example
+    :rtype: Any
+    """
+    if issubclass(type_, (numbers.Number, decimal.Decimal)):
+        return 0
+    elif issubclass(type_, pydantic.BaseModel):
+        return generate_pydantic_example(pydantic_model=type_)
+    else:
+        return "string"
+
+
 def construct_modify_schema_function(fields_with_choices: List) -> SchemaExtraCallable:
     """
     Modifies the schema to include fields with choices validator.
diff --git a/ormar/models/mixins/save_mixin.py b/ormar/models/mixins/save_mixin.py
index a7ac562..6a3aab0 100644
--- a/ormar/models/mixins/save_mixin.py
+++ b/ormar/models/mixins/save_mixin.py
@@ -275,12 +275,12 @@ class SavePrepareMixin(RelationMixin, AliasMixin):
         :rtype: int
         """
         for field in fields_list:
-            value = getattr(self, field.name) or []
-            if not isinstance(value, list):
-                value = [value]
-            for val in value:
+            values = getattr(self, field.name) or []
+            if not isinstance(values, list):
+                values = [values]
+            for value in values:
                 if follow:
-                    update_count = await val.save_related(
+                    update_count = await value.save_related(
                         follow=follow,
                         save_all=save_all,
                         relation_map=self._skip_ellipsis(  # type: ignore
@@ -291,8 +291,8 @@ class SavePrepareMixin(RelationMixin, AliasMixin):
                         relation_field=field,
                     )
                 else:
-                    update_count = await val._upsert_model(
-                        instance=val,
+                    update_count = await value._upsert_model(
+                        instance=value,
                         save_all=save_all,
                         previous_model=self,
                         relation_field=field,
diff --git a/ormar/models/newbasemodel.py b/ormar/models/newbasemodel.py
index 865a48b..c4dc612 100644
--- a/ormar/models/newbasemodel.py
+++ b/ormar/models/newbasemodel.py
@@ -316,11 +316,7 @@ class NewBaseModel(pydantic.BaseModel, ModelTableProxy, metaclass=ModelMetaclass
                     k,
                     model_fields[k].expand_relationship(v, self, to_register=False,)
                     if k in model_fields
-                    else (
-                        v
-                        if k in pydantic_fields
-                        else model_fields["HAP&*YA^)*GW^&QT6567q56gGG%$%"]
-                    ),
+                    else (v if k in pydantic_fields else model_fields[k]),
                     "dumps",
                 )
                 for k, v in kwargs.items()
diff --git a/tests/test_fastapi/test_fastapi_docs.py b/tests/test_fastapi/test_fastapi_docs.py
index 94ac9e1..e19fe04 100644
--- a/tests/test_fastapi/test_fastapi_docs.py
+++ b/tests/test_fastapi/test_fastapi_docs.py
@@ -1,4 +1,5 @@
-from typing import List
+import datetime
+from typing import List, Optional
 
 import databases
 import pydantic
@@ -35,6 +36,17 @@ class LocalMeta:
     database = database
 
 
+class PTestA(pydantic.BaseModel):
+    c: str
+    d: bytes
+    e: datetime.datetime
+
+
+class PTestP(pydantic.BaseModel):
+    a: int
+    b: Optional[PTestA]
+
+
 class Category(ormar.Model):
     class Meta(LocalMeta):
         tablename = "categories"
@@ -49,6 +61,8 @@ class Item(ormar.Model):
 
     id: int = ormar.Integer(primary_key=True)
     name: str = ormar.String(max_length=100)
+    pydantic_int: Optional[int]
+    test_P: Optional[List[PTestP]]
     categories = ormar.ManyToMany(Category)
 
 
@@ -126,16 +140,27 @@ def test_schema_modification():
     )
     assert schema["properties"]["categories"]["title"] == "Categories"
     assert schema["example"] == {
+        "categories": [{"id": 0, "name": "string"}],
         "id": 0,
         "name": "string",
-        "categories": [{"id": 0, "name": "string"}],
+        "pydantic_int": 0,
+        "test_P": [{"a": 0, "b": {"c": "string", "d": "string", "e": "string"}}],
     }
 
     schema = Category.schema()
     assert schema["example"] == {
         "id": 0,
         "name": "string",
-        "items": [{"id": 0, "name": "string"}],
+        "items": [
+            {
+                "id": 0,
+                "name": "string",
+                "pydantic_int": 0,
+                "test_P": [
+                    {"a": 0, "b": {"c": "string", "d": "string", "e": "string"}}
+                ],
+            }
+        ],
     }