Issue #246 added methods to check the study voucher and voucher_type property

smash/web/models/study.py

@@ -29,3 +29,19 @@ class Study(models.Model):
 
     def __unicode__(self):
         return "%s" % self.name
+
+    @property
+    def has_voucher_types(self):
+        return self.columns.voucher_types
+
+    @property
+    def has_vouchers(self):
+        return self.columns.vouchers
+
+    @staticmethod
+    def get_by_id(study_id):
+        study = Study.objects.filter(id=study_id)
+        if len(study) > 0:
+            return study[0]
+        else:
+            return None
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