1 files changed, 42 insertions, 0 deletions
diff --git a/main/fields.py b/main/fields.py
new file mode 100644
index 00000000..948cb5d9
--- /dev/null
+++ b/main/fields.py
@@ -0,0 +1,42 @@
+from django.db import models
+from django.core.validators import RegexValidator
+
+
+class PositiveBigIntegerField(models.BigIntegerField):
+    _south_introspects = True
+
+    def get_internal_type(self):
+        return "BigIntegerField"
+
+    def formfield(self, **kwargs):
+        defaults = { 'min_value': 0 }
+        defaults.update(kwargs)
+        return super(PositiveBigIntegerField, self).formfield(**defaults)
+
+class PGPKeyField(models.CharField):
+    _south_introspects = True
+
+    def __init__(self, *args, **kwargs):
+        super(PGPKeyField, self).__init__(*args, **kwargs)
+        self.validators.append(RegexValidator(r'^[0-9A-F]{40}$',
+            "Ensure this value consists of 40 hex characters.", 'hex_char'))
+
+    def to_python(self, value):
+        if value == '' or value is None:
+            return None
+        value = super(PGPKeyField, self).to_python(value)
+        # remove all spaces
+        value = value.replace(' ', '')
+        # prune prefixes, either 0x or 2048R/ type
+        if value.startswith('0x'):
+            value = value[2:]
+        value = value.split('/')[-1]
+        # make all (hex letters) uppercase
+        return value.upper()
+
+    def formfield(self, **kwargs):
+        # override so we don't set max_length form field attribute
+        return models.Field.formfield(self, **kwargs)
+
+
+# vim: set ts=4 sw=4 et: