added role column to worker list. Issue #238

See issue #238 (closed) I understand this might be not that useful since this info can be found on the worker details but you can now search for doctors etc. I also did it to understand the way role filters work. I created a property method to access the role. Why is the first role the role of the worker?

smash/web/models/worker.py

@@ -7,7 +7,7 @@ from django.db import models
 
 from web.models.constants import GLOBAL_STUDY_ID, COUNTRY_OTHER_ID
 from web.models.worker_study_role import STUDY_ROLE_CHOICES, HEALTH_PARTNER_ROLE_CHOICES, \
-    VOUCHER_PARTNER_ROLE_CHOICES, WORKER_STAFF, WORKER_HEALTH_PARTNER, WORKER_VOUCHER_PARTNER
+    VOUCHER_PARTNER_ROLE_CHOICES, WORKER_STAFF, WORKER_HEALTH_PARTNER, WORKER_VOUCHER_PARTNER, ROLE_CHOICES
 
 logger = logging.getLogger(__name__)
 
@@ -161,6 +161,16 @@ class Worker(models.Model):
         else:
             return False
 
+    @property
+    def role(self):
+        roles = self.roles.filter(study=GLOBAL_STUDY_ID)
+        if roles.count() == 0:
+            return WORKER_STAFF
+        role = roles[0].role
+        if role not in [role_type for role_type, _ in ROLE_CHOICES]:
+            raise TypeError("Unknown worker role")
+        return role
+
     @staticmethod
     def get_by_user(the_user):
         if isinstance(the_user, User):

[Piotr Gawron]

This line is not covered by unit tests ;)

[Carlos Vega]

Yes, thank you. I just added two more commits to fix that.