Benutzerdefiniertes Django-Modellfeld für binäre Array-Speicherung

import array
from django.db import models
 
class IntArrayField(models.BinaryField):
    """Custom Django model field encapsulating Python array.array for efficient binary storage."""
 
    def to_python(self, value):
        if value is None or isinstance(value, array.array):
            return value
        arr = array.array('i')
        arr.frombytes(bytes(value))
        return arr
 
    def from_db_value(self, value, expression, connection):
        return self.to_python(value)
 
    def get_prep_value(self, value):
        prep_val = super().get_prep_value(value)
        if isinstance(prep_val, array.array):
            return prep_val.tobytes()
        return prep_val