I’m working in a Django project. I’ve created a model to save the last 50 errors that happen.

models.py

class Error(models.Model):
    ERROR_TYPE_CHOICES = [
        ('ERROR', 'ERROR'),
        ('WARNING', 'WARNING'),
    ]
    user_mail = models.CharField(max_length=500, blank=True, null=True)
    error_type = models.CharField(max_length=7, choices=ERROR_TYPE_CHOICES)
    error_message = models.CharField(max_length=1000, blank=True, null=True)
    error_message_detail = models.CharField(max_length=500, blank=True, null=True)
    created_at = models.DateTimeField(default=timezone.now)

    # Static field for maximum errors limit
    max_errors = 50

    def __str__(self):
        return f"{self.error_type}: {self.error_message}"

    class Meta:
        ordering = ['-created_at']  # Order by descending creation date

    @classmethod
    def check_and_trim(cls):
        # # Obtain all errors ordered by creation date
        errors = cls.objects.all().order_by('-created_at')
        # If there are more than 50 errors, delete the older ones
        if errors.count() > cls.max_errors:
            errors_to_delete = errors[cls.max_errors:]
            for error in errors_to_delete:
                error.delete()

admin.py

class ErrorAdmin(admin.ModelAdmin):
    list_display = ('user_mail', 'error_type', 'error_message', 'error_message_detail', 'created_at')

admin.site.register(Error, ErrorAdmin)

So as you can see when there are more than 50 errors the oldest one is erased so that the new one can be saved.

In the future maybe is needed to be saved more than 50 errors, so instead of changing the code I’d like to add a feature now so in the localhost:8000/admin/Error you can input how many errors you want to be saved.