Added a simple re-tagger

src/documents/management/commands/document_retagger.py

@@ -0,0 +1,34 @@
+from django.core.management.base import BaseCommand
+
+from documents.models import Document, Tag
+
+
+class Command(BaseCommand):
+
+    help = """
+        Using the current set of tagging rules, apply said rules to all
+        documents in the database, effectively allowing you to back-tag all
+        previously indexed documents with tags created (or modified) after their
+        initial import.
+    """.replace("    ", "")
+
+    def __init__(self, *args, **kwargs):
+        self.verbosity = 0
+        BaseCommand.__init__(self, *args, **kwargs)
+
+    def handle(self, *args, **options):
+
+        self.verbosity = options["verbosity"]
+
+        for document in Document.objects.all():
+            tags = Tag.objects.exclude(
+                pk__in=document.tags.values_list("pk", flat=True))
+            for tag in tags:
+                if tag.matches(document.content):
+                    self._render(
+                        'Tagging {} with "{}"'.format(document, tag), 1)
+                    document.tags.add(tag)
+
+    def _render(self, text, verbosity):
+        if self.verbosity >= verbosity:
+            print(text)