o e@sNddlmZddlmZddlmZddlmZddlm Z GdddZ d S) )ObjectDoesNotExist) NOT_PROVIDED)Manager)widgets) FieldErrorc@sfeZdZdZddgZdddeddddfddZdd Zd d Zd d Z dddZ ddZ dddZ dS)Fieldaw Field represent mapping between `object` field and representation of this field. :param attribute: A string of either an instance attribute or callable off the object. :param column_name: Lets you provide a name for the column that represents this field in the export. :param widget: Defines a widget that will be used to represent this field's data in the export, or transform the value during import. :param readonly: A Boolean which defines if this field will be ignored during import. :param default: This value will be returned by :meth:`~import_export.fields.Field.clean` if this field's widget did not return an adequate value. :param saves_null_values: Controls whether null values are saved on the object :param dehydrate_method: Lets you choose your own method for dehydration rather than using `dehydrate_{field_name}` syntax. :param m2m_add: changes save of this field to add the values, if they do not exist, to a ManyToMany field instead of setting all values. Only useful if field is a ManyToMany field. NFTc Cs@||_||_||_|st}||_||_||_||_||_ dSN) attributedefault column_namerWidgetwidgetreadonlysaves_null_valuesdehydrate_methodm2m_add) selfr r rr rrrrrG/var/www/html/venv/lib/python3.10/site-packages/import_export/fields.py__init__(s  zField.__init__cCs<d|jj|jjf}t|dd}|durd||fSd|S)zC Displays the module, class and name of the field. z%s.%sr Nz<%s: %s>z<%s>) __class__ __module____name__getattr)rpathr rrr__repr__>s   zField.__repr__cKs|z||j}Wntytd|jt|fw|jj|fd|i|}||jvr<|jtkr Returns the value of the object's attribute. N__)r splitr ValueErrorrr# isinstancer)robjattrsr&attrrrr get_value_s  zField.get_valuecKs|jsO|jd}|ddD]}t||d}q|j|fi|}|dus(|jrQ|s4t||d|dS|jrCt||dj|dSt||d |dSdSdS)z If this field is not declared readonly, the object's attribute will be set to the value returned by :meth:`~import_export.fields.Field.clean`. r'N) rr r(rr!rsetattrraddset)rr+r$is_m2mr%r,r-cleanedrrrsaveys z Field.savecCs$||}|dur dS|j||S)zd Returns value from the provided object converted to export representation. Nr )r.rrender)rr+r&rrrexports z Field.exportcCs$d}|js |s td|jp||S)z{ Returns method name to be used for dehydration of the field. Defaults to `dehydrate_{field_name}` dehydrate_z6Both dehydrate_method and field_name are not supplied.)rr)r field_nameDEFAULT_DEHYDRATE_METHOD_PREFIXrrrget_dehydrate_methods zField.get_dehydrate_method)Fr ) rr __qualname____doc__r"rrrr!r.r5r7r;rrrrr s$    rN) django.core.exceptionsrdjango.db.models.fieldsrdjango.db.models.managerrr r exceptionsrrrrrrs