189 lines
4.8 KiB
Markdown
189 lines
4.8 KiB
Markdown
<a name="models.excludable"></a>
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# models.excludable
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<a name="models.excludable.Excludable"></a>
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## Excludable Objects
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```python
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@dataclass
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class Excludable()
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```
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Class that keeps sets of fields to exclude and include
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<a name="models.excludable.Excludable.get_copy"></a>
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#### get\_copy
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```python
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| get_copy() -> "Excludable"
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```
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Return copy of self to avoid in place modifications
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**Returns**:
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`(ormar.models.excludable.Excludable)`: copy of self with copied sets
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<a name="models.excludable.Excludable.set_values"></a>
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#### set\_values
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```python
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| set_values(value: Set, is_exclude: bool) -> None
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```
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Appends the data to include/exclude sets.
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**Arguments**:
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- `value (set)`: set of values to add
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- `is_exclude (bool)`: flag if values are to be excluded or included
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<a name="models.excludable.Excludable.is_included"></a>
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#### is\_included
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```python
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| is_included(key: str) -> bool
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```
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Check if field in included (in set or set is {...})
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**Arguments**:
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- `key (str)`: key to check
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**Returns**:
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`(bool)`: result of the check
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<a name="models.excludable.Excludable.is_excluded"></a>
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#### is\_excluded
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```python
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| is_excluded(key: str) -> bool
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```
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Check if field in excluded (in set or set is {...})
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**Arguments**:
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- `key (str)`: key to check
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**Returns**:
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`(bool)`: result of the check
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<a name="models.excludable.ExcludableItems"></a>
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## ExcludableItems Objects
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```python
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class ExcludableItems()
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```
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Keeps a dictionary of Excludables by alias + model_name keys
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to allow quick lookup by nested models without need to travers
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deeply nested dictionaries and passing include/exclude around
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<a name="models.excludable.ExcludableItems.from_excludable"></a>
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#### from\_excludable
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```python
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| @classmethod
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| from_excludable(cls, other: "ExcludableItems") -> "ExcludableItems"
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```
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Copy passed ExcludableItems to avoid inplace modifications.
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**Arguments**:
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- `other (ormar.models.excludable.ExcludableItems)`: other excludable items to be copied
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**Returns**:
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`(ormar.models.excludable.ExcludableItems)`: copy of other
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<a name="models.excludable.ExcludableItems.get"></a>
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#### get
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```python
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| get(model_cls: Type["Model"], alias: str = "") -> Excludable
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```
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Return Excludable for given model and alias.
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**Arguments**:
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- `model_cls (ormar.models.metaclass.ModelMetaclass)`: target model to check
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- `alias (str)`: table alias from relation manager
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**Returns**:
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`(ormar.models.excludable.Excludable)`: Excludable for given model and alias
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<a name="models.excludable.ExcludableItems.build"></a>
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#### build
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```python
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| build(items: Union[List[str], str, Tuple[str], Set[str], Dict], model_cls: Type["Model"], is_exclude: bool = False) -> None
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```
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Receives the one of the types of items and parses them as to achieve
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a end situation with one excludable per alias/model in relation.
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Each excludable has two sets of values - one to include, one to exclude.
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**Arguments**:
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- `items (Union[List[str], str, Tuple[str], Set[str], Dict])`: values to be included or excluded
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- `model_cls (ormar.models.metaclass.ModelMetaclass)`: source model from which relations are constructed
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- `is_exclude (bool)`: flag if items should be included or excluded
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<a name="models.excludable.ExcludableItems._set_excludes"></a>
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#### \_set\_excludes
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```python
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| _set_excludes(items: Set, model_name: str, is_exclude: bool, alias: str = "") -> None
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```
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Sets set of values to be included or excluded for given key and model.
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**Arguments**:
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- `items (set)`: items to include/exclude
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- `model_name (str)`: name of model to construct key
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- `is_exclude (bool)`: flag if values should be included or excluded
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- `alias (str)`:
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<a name="models.excludable.ExcludableItems._traverse_dict"></a>
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#### \_traverse\_dict
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```python
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| _traverse_dict(values: Dict, source_model: Type["Model"], model_cls: Type["Model"], is_exclude: bool, related_items: List = None, alias: str = "") -> None
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```
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Goes through dict of nested values and construct/update Excludables.
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**Arguments**:
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- `values (Dict)`: items to include/exclude
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- `source_model (ormar.models.metaclass.ModelMetaclass)`: source model from which relations are constructed
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- `model_cls (ormar.models.metaclass.ModelMetaclass)`: model from which current relation is constructed
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- `is_exclude (bool)`: flag if values should be included or excluded
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- `related_items (List)`: list of names of related fields chain
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- `alias (str)`: alias of relation
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<a name="models.excludable.ExcludableItems._traverse_list"></a>
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#### \_traverse\_list
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```python
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| _traverse_list(values: Set[str], model_cls: Type["Model"], is_exclude: bool) -> None
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```
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Goes through list of values and construct/update Excludables.
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**Arguments**:
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- `values (set)`: items to include/exclude
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- `model_cls (ormar.models.metaclass.ModelMetaclass)`: model from which current relation is constructed
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- `is_exclude (bool)`: flag if values should be included or excluded
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