Some initial work on data export model

misago/users/models/dataexport.py

@@ -0,0 +1,37 @@
+from django.conf import settings
+from django.db import models
+from django.utils import timezone
+from django.utils.translation import ugettext_lazy as _
+
+
+def get_export_upload_to(instance, filename):
+    raise NotImplementedError() # todo: generate secure upload to path
+
+
+class DataExport(models.Model):
+    STATUS_REQUESTED = 0
+    STATUS_PROCESSING = 1
+    STATUS_READY = 2
+    STATUS_EXPIRED = 3
+
+    STATUS_CHOICES = (
+        (STATUS_REQUESTED, _("Requested")),
+        (STATUS_PROCESSING, _("Processing")),
+        (STATUS_READY, _("Ready")),
+        (STATUS_EXPIRED, _("Expired")),
+    )
+
+    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.PROTECT)
+    status = models.PositiveIntegerField(
+        default=STATUS_REQUESTED,
+        choices=STATUS_CHOICES,
+        db_index=True,
+    )
+    requester = models.ForeignKey(
+        settings.AUTH_USER_MODEL,
+        related_name='+',
+        on_delete=models.SET_NULL,
+    )
+    requested_on = models.DateTimeField(default=timezone.now)
+    expires_on = models.DateTimeField(default=timezone.now)
+    export_file = models.FileField(upload_to=get_export_upload_to, null=True, blank=True)