transactions: add filter against 0.00 transactions

k4ever/transaction/models.py

@@ -1,6 +1,10 @@
 from django.db import models
+from django.core.validators import *
 from django.contrib.auth.models import User
 
+from decimal import Decimal
+
+
 class TransactionType(models.Model):
 	""" Type for a :class:`Transaction`. States how the money has
 	    been added to the account and if somebody needs to check
@@ -16,9 +20,10 @@ class Transaction(models.Model):
 	user = models.ForeignKey(User)
 	transactionType = models.ForeignKey(TransactionType, verbose_name='Typ')
 	dateTime = models.DateTimeField()
-	amount = models.DecimalField(max_digits=8, decimal_places=2)
+	amount = models.DecimalField(max_digits=8, decimal_places=2, validators=[MinValueValidator(Decimal("0.01"))])
 	checked = models.BooleanField(default=False)
 
+	
 	def __unicode__(self):
 		return u"%s for user %s (%s),%schecked" % (self.amount, self.user, self.transactionType, (self.checked and " " or " not "))
 	# TODO: Find out what would happen if parent save/delete does not like us