Add tapingo_url attribute to Facility

- optional, enforced with RegexValidator

whats-open/api/admin.py

@@ -28,7 +28,8 @@ class FacilityAdmin(admin.ModelAdmin):
     fieldsets = (
         (None, {
             'fields': ('name', 'facility_category', 'facility_location',
-                       'main_schedule', 'special_schedules', 'owners'),
+                       'main_schedule', 'special_schedules',
+                       'tapingo_url', 'owners'),
         }),
     )
 

whats-open/api/models.py

@@ -12,10 +12,12 @@ from __future__ import (absolute_import, division, print_function,
 
 # Python stdlib Imports
 import datetime
+import re
 
 # Django Imports
 from django.db import models
 from django.contrib.auth.models import User
+from django.core.validators import RegexValidator
 
 # Other Imports
 from model_utils.models import TimeStampedModel
@@ -102,6 +104,11 @@ class Facility(TimeStampedModel):
                                                             only for its
                                                             specified duration.
                                                             """)
+    # URL, if it exists, to the Tapingo page that is associated with this
+    # facility
+    tapingo_url = models.URLField(blank=True, validators=[RegexValidator(regex='^https:\/\/www.tapingo.com\/',
+                                                                         message='The link is not a valid tapingo link Example: https://www.tapingo.com/order/restaurant/starbucks-gmu-johnson/',
+                                                                         code='invalid_tapingo_url')])
 
     def is_open(self):
         """