fix isnull typo and formatting

docs/api/models/helpers/models.md

@@ -5,7 +5,7 @@
 #### is\_field\_an\_forward\_ref
 
 ```python
-is_field_an_forward_ref(field: Type["BaseField"]) -> bool
+is_field_an_forward_ref(field: "BaseField") -> bool
 ```
 
 Checks if field is a relation field and whether any of the referenced models
@@ -91,7 +91,7 @@ extraction of ormar model_fields.
 #### group\_related\_list
 
 ```python
-group_related_list(list_: List) -> Dict
+group_related_list(list_: List) -> collections.OrderedDict
 ```
 
 Translates the list of related strings into a dictionary.

docs/api/models/helpers/pydantic.md

@@ -5,7 +5,7 @@
 #### create\_pydantic\_field
 
 ```python
-create_pydantic_field(field_name: str, model: Type["Model"], model_field: Type["ManyToManyField"]) -> None
+create_pydantic_field(field_name: str, model: Type["Model"], model_field: "ManyToManyField") -> None
 ```
 
 Registers pydantic field on through model that leads to passed model
@@ -38,32 +38,6 @@ field_name. Returns a pydantic field with type of field_name field type.
 
 `(pydantic.ModelField)`: newly created pydantic field
 
-<a name="models.helpers.pydantic.populate_default_pydantic_field_value"></a>
-#### populate\_default\_pydantic\_field\_value
-
-```python
-populate_default_pydantic_field_value(ormar_field: Type["BaseField"], field_name: str, attrs: dict) -> dict
-```
-
-Grabs current value of the ormar Field in class namespace
-(so the default_value declared on ormar model if set)
-and converts it to pydantic.FieldInfo
-that pydantic is able to extract later.
-
-On FieldInfo there are saved all needed params like max_length of the string
-and other constraints that pydantic can use to build
-it's own field validation used by ormar.
-
-**Arguments**:
-
-- `ormar_field (ormar Field)`: field to convert
-- `field_name (str)`: field to convert name
-- `attrs (Dict)`: current class namespace
-
-**Returns**:
-
-`(Dict)`: updated namespace dict
-
 <a name="models.helpers.pydantic.populate_pydantic_default_values"></a>
 #### populate\_pydantic\_default\_values
 
@@ -76,7 +50,7 @@ dictionary of the class. Fields declared on model are all subclasses of the
 BaseField class.
 
 Trigger conversion of ormar field into pydantic FieldInfo, which has all needed
-paramaters saved.
+parameters saved.
 
 Overwrites the annotations of ormar fields to corresponding types declared on
 ormar fields (constructed dynamically for relations).

docs/api/models/helpers/relations.md

@@ -5,7 +5,7 @@
 #### register\_relation\_on\_build
 
 ```python
-register_relation_on_build(field: Type["ForeignKeyField"]) -> None
+register_relation_on_build(field: "ForeignKeyField") -> None
 ```
 
 Registers ForeignKey relation in alias_manager to set a table_prefix.
@@ -23,7 +23,7 @@ aliases for proper sql joins.
 #### register\_many\_to\_many\_relation\_on\_build
 
 ```python
-register_many_to_many_relation_on_build(field: Type["ManyToManyField"]) -> None
+register_many_to_many_relation_on_build(field: "ManyToManyField") -> None
 ```
 
 Registers connection between through model and both sides of the m2m relation.
@@ -43,7 +43,7 @@ By default relation name is a model.name.lower().
 #### expand\_reverse\_relationship
 
 ```python
-expand_reverse_relationship(model_field: Type["ForeignKeyField"]) -> None
+expand_reverse_relationship(model_field: "ForeignKeyField") -> None
 ```
 
 If the reverse relation has not been set before it's set here.
@@ -76,7 +76,7 @@ If the reverse relation has not been set before it's set here.
 #### register\_reverse\_model\_fields
 
 ```python
-register_reverse_model_fields(model_field: Type["ForeignKeyField"]) -> None
+register_reverse_model_fields(model_field: "ForeignKeyField") -> None
 ```
 
 Registers reverse ForeignKey field on related model.
@@ -93,7 +93,7 @@ Autogenerated reverse fields also set related_name to the original field name.
 #### register\_through\_shortcut\_fields
 
 ```python
-register_through_shortcut_fields(model_field: Type["ManyToManyField"]) -> None
+register_through_shortcut_fields(model_field: "ManyToManyField") -> None
 ```
 
 Registers m2m relation through shortcut on both ends of the relation.
@@ -106,7 +106,7 @@ Registers m2m relation through shortcut on both ends of the relation.
 #### register\_relation\_in\_alias\_manager
 
 ```python
-register_relation_in_alias_manager(field: Type["ForeignKeyField"]) -> None
+register_relation_in_alias_manager(field: "ForeignKeyField") -> None
 ```
 
 Registers the relation (and reverse relation) in alias manager.
@@ -125,7 +125,7 @@ fk - register_relation_on_build
 #### verify\_related\_name\_dont\_duplicate
 
 ```python
-verify_related_name_dont_duplicate(related_name: str, model_field: Type["ForeignKeyField"]) -> None
+verify_related_name_dont_duplicate(related_name: str, model_field: "ForeignKeyField") -> None
 ```
 
 Verifies whether the used related_name (regardless of the fact if user defined or
@@ -150,7 +150,7 @@ model
 #### reverse\_field\_not\_already\_registered
 
 ```python
-reverse_field_not_already_registered(model_field: Type["ForeignKeyField"]) -> bool
+reverse_field_not_already_registered(model_field: "ForeignKeyField") -> bool
 ```
 
 Checks if child is already registered in parents pydantic fields.

docs/api/models/helpers/sqlalchemy.md

@@ -5,7 +5,7 @@
 #### adjust\_through\_many\_to\_many\_model
 
 ```python
-adjust_through_many_to_many_model(model_field: Type["ManyToManyField"]) -> None
+adjust_through_many_to_many_model(model_field: "ManyToManyField") -> None
 ```
 
 Registers m2m relation on through model.
@@ -21,7 +21,7 @@ Sets pydantic fields with child and parent model types.
 #### create\_and\_append\_m2m\_fk
 
 ```python
-create_and_append_m2m_fk(model: Type["Model"], model_field: Type["ManyToManyField"], field_name: str) -> None
+create_and_append_m2m_fk(model: Type["Model"], model_field: "ManyToManyField", field_name: str) -> None
 ```
 
 Registers sqlalchemy Column with sqlalchemy.ForeignKey leading to the model.
@@ -98,6 +98,72 @@ or pkname validation fails.
 
 `(Tuple[Optional[str], List[sqlalchemy.Column]])`: pkname, list of sqlalchemy columns
 
+<a name="models.helpers.sqlalchemy._process_fields"></a>
+#### \_process\_fields
+
+```python
+_process_fields(model_fields: Dict, new_model: Type["Model"]) -> Tuple[Optional[str], List[sqlalchemy.Column]]
+```
+
+Helper method.
+
+Populates pkname and columns.
+Trigger validation of primary_key - only one and required pk can be set,
+cannot be pydantic_only.
+
+Append fields to columns if it's not pydantic_only,
+virtual ForeignKey or ManyToMany field.
+
+Sets `owner` on each model_field as reference to newly created Model.
+
+**Raises**:
+
+- `ModelDefinitionError`: if validation of related_names fail,
+or pkname validation fails.
+
+**Arguments**:
+
+- `model_fields (Dict[str, ormar.Field])`: dictionary of declared ormar model fields
+- `new_model (Model class)`: 
+
+**Returns**:
+
+`(Tuple[Optional[str], List[sqlalchemy.Column]])`: pkname, list of sqlalchemy columns
+
+<a name="models.helpers.sqlalchemy._is_through_model_not_set"></a>
+#### \_is\_through\_model\_not\_set
+
+```python
+_is_through_model_not_set(field: "BaseField") -> bool
+```
+
+Alias to if check that verifies if through model was created.
+
+**Arguments**:
+
+- `field ("BaseField")`: field to check
+
+**Returns**:
+
+`(bool)`: result of the check
+
+<a name="models.helpers.sqlalchemy._is_db_field"></a>
+#### \_is\_db\_field
+
+```python
+_is_db_field(field: "BaseField") -> bool
+```
+
+Alias to if check that verifies if field should be included in database.
+
+**Arguments**:
+
+- `field ("BaseField")`: field to check
+
+**Returns**:
+
+`(bool)`: result of the check
+
 <a name="models.helpers.sqlalchemy.populate_meta_tablename_columns_and_pk"></a>
 #### populate\_meta\_tablename\_columns\_and\_pk
 
@@ -165,7 +231,7 @@ It populates name, metadata, columns and constraints.
 #### update\_column\_definition
 
 ```python
-update_column_definition(model: Union[Type["Model"], Type["NewBaseModel"]], field: Type["ForeignKeyField"]) -> None
+update_column_definition(model: Union[Type["Model"], Type["NewBaseModel"]], field: "ForeignKeyField") -> None
 ```
 
 Updates a column with a new type column based on updated parameters in FK fields.
@@ -173,7 +239,7 @@ Updates a column with a new type column based on updated parameters in FK fields
 **Arguments**:
 
 - `model (Type["Model"])`: model on which columns needs to be updated
-- `field (Type[ForeignKeyField])`: field with column definition that requires update
+- `field (ForeignKeyField)`: field with column definition that requires update
 
 **Returns**:
 

docs/api/models/helpers/validation.md

@@ -5,7 +5,7 @@
 #### check\_if\_field\_has\_choices
 
 ```python
-check_if_field_has_choices(field: Type[BaseField]) -> bool
+check_if_field_has_choices(field: BaseField) -> bool
 ```
 
 Checks if given field has choices populated.
@@ -23,7 +23,7 @@ A if it has one, a validator for this field needs to be attached.
 #### convert\_choices\_if\_needed
 
 ```python
-convert_choices_if_needed(field: Type["BaseField"], value: Any) -> Tuple[Any, List]
+convert_choices_if_needed(field: "BaseField", value: Any) -> Tuple[Any, List]
 ```
 
 Converts dates to isoformat as fastapi can check this condition in routes
@@ -37,7 +37,7 @@ Converts decimal to float with given scale.
 
 **Arguments**:
 
-- `field (Type[BaseField])`: ormar field to check with choices
+- `field (BaseField)`: ormar field to check with choices
 - `values (Dict)`: current values of the model to verify
 
 **Returns**:
@@ -48,7 +48,7 @@ Converts decimal to float with given scale.
 #### validate\_choices
 
 ```python
-validate_choices(field: Type["BaseField"], value: Any) -> None
+validate_choices(field: "BaseField", value: Any) -> None
 ```
 
 Validates if given value is in provided choices.
@@ -59,7 +59,7 @@ Validates if given value is in provided choices.
 
 **Arguments**:
 
-- `field (Type[BaseField])`: field to validate
+- `field (BaseField)`: field to validate
 - `value (Any)`: value of the field
 
 <a name="models.helpers.validation.choices_validator"></a>