File: //usr/lib/python3/dist-packages/django/core/serializers/__pycache__/python.cpython-310.pyc
o
�a� � @ sf d Z ddlmZ ddlmZ ddlmZmZ ddlm Z G dd� dej
�Z
edd �d
d �Z d d
� Z dS )z�
A Python "serializer". Doesn't do much serializing per se -- just converts to
and from basic Python data types (lists, dicts, strings, etc.). Useful as a basis for
other serializers.
� )�apps)�base)�DEFAULT_DB_ALIAS�models)�is_protected_typec @ sd e Zd ZdZdZdd� Zdd� Zdd� Zd d
� Zd d � Z d
d� Z
dd� Z dd� Z dd� Z
dd� ZdS )�
Serializerz7
Serialize a QuerySet to basic Python objects.
Tc C s d | _ g | _d S �N)�_current�objects��self� r
�@/usr/lib/python3/dist-packages/django/core/serializers/python.py�start_serialization s
z Serializer.start_serializationc C s d S r r
r r
r
r �end_serialization s z Serializer.end_serializationc C s
i | _ d S r )r �r �objr
r
r � start_object s
zSerializer.start_objectc C s | j �| �|�� d | _d S r )r
�append�get_dump_objectr r r
r
r �
end_object s
zSerializer.end_objectc C s@ dt |j�i}| jrt|d�s| �||jj�|d< | j|d< |S )N�model� natural_key�pk�fields)�str�_meta�use_natural_primary_keys�hasattr�_value_from_fieldr r )r r �datar
r
r r " s
zSerializer.get_dump_objectc C s |� |�}t|�r |S |�|�S r )�value_from_objectr �value_to_string)r r �field�valuer
r
r r ) s
z Serializer._value_from_fieldc C s | � ||�| j|j< d S r )r r �name)r r r# r
r
r � handle_field0 s zSerializer.handle_fieldc C sP | j rt|jjd�rt||j�}|r|�� }n d }n| �||�}|| j|j< d S )Nr ) �use_natural_foreign_keysr � remote_fieldr �getattrr% r r r )r r r# �relatedr$ r
r
r �handle_fk_field3 s
zSerializer.handle_fk_fieldc sz |j jjjr;�jrt|j jd�rdd� � n�fdd�� t|di ��|j t||j ��
� �}� fdd�|D ��j |j < d S d S )Nr c S s | � � S r )r �r$ r
r
r � m2m_valueA s z.Serializer.handle_m2m_field.<locals>.m2m_valuec s � � | | jj�S r )r r r r, r r
r r- D s �_prefetched_objects_cachec s g | ]}� |��qS r
r
)�.0r* )r- r
r �
<listcomp>J s z/Serializer.handle_m2m_field.<locals>.<listcomp>) r( �throughr � auto_createdr' r r r) �getr% �iteratorr )r r r# �m2m_iterr
)r- r r �handle_m2m_field> s
� �zSerializer.handle_m2m_fieldc C s | j S r )r
r r
r
r �getvalueL s zSerializer.getvalueN)�__name__�
__module__� __qualname__�__doc__�internal_use_onlyr r r r r r r& r+ r6 r7 r
r
r
r r
s r F)�using�ignorenonexistentc k s� � |� dd�}i }| D �]2}zt|d �}W n
tjy# |r"Y q � w i }d|v rVz|jj�|�d��||jjj< W n t yU } ztj�
| |d |�d�d��d} ~ ww i }
i } ||vrjdd� |j� � D �||< || } |d � � D ]�\}
}|r|
| vrqt|j�
|
�}|jr�t|jtj�r�z
t�||||�}W n tjy� } ztj�
| j|d |�d�| j��d} ~ ww |tjkr�|| |< qt||
|j< qt|j�r t|jtj��r z
t�||||�}W n t y� } ztj�
| |d |�d�|��d} ~ ww |tjk�r|| |< qt|||j< qtz
|�|�||j< W qt t �y. } ztj�
| |d |�d�|��d} ~ ww t�|||�}t�||
| �V q dS ) z�
Deserialize simple Python objects back into Django ORM instances.
It's expected that you pass the Python objects themselves (instead of a
stream or a string) to the constructor
�handle_forward_referencesFr r Nc S s h | ]}|j �qS r
)r% )r/ �fr
r
r � <setcomp>m s z Deserializer.<locals>.<setcomp>r )�pop�
_get_modelr �DeserializationErrorr r � to_pythonr3 �attname� Exception�WithData�
get_fields�items� get_fieldr( �
isinstancer �
ManyToManyRel�deserialize_m2m_values�M2MDeserializationError� original_exc� DEFER_FIELDr% � ManyToOneRel�deserialize_fk_value�build_instance�DeserializedObject)� object_listr= r> �optionsr? �field_names_cache�d�Modelr �e�m2m_data�deferred_fields� field_names�
field_name� field_valuer# �valuesr$ r r
r
r � DeserializerP sr �
�" �� ��
��
���rb c C s. zt �| �W S ttfy t�d| ��w )z6Look up a model from an "app_label.model_name" string.z Invalid model identifier: '%s')r � get_model� LookupError� TypeErrorr rD )�model_identifierr
r
r rC � s
�rC N)
r; � django.appsr �django.core.serializersr � django.dbr r �django.utils.encodingr r rb rC r
r
r
r �<module> s C H