Alert model added

- An alert is a message we display to clients in case of some event
- start/stop date and time
- message
- urgency tag for colorization purposes

whats-open/api/admin.py

@@ -13,7 +13,7 @@ from __future__ import (absolute_import, division, print_function,
 from django.contrib import admin
 
 # App Imports
-from .models import Facility, Schedule, OpenTime, Category, Location
+from .models import Facility, Schedule, OpenTime, Category, Location, Alert
 
 class FacilityAdmin(admin.ModelAdmin):
     """
@@ -60,3 +60,4 @@ admin.site.register(Schedule, ScheduleAdmin)
 # Use the default ModelAdmin interface for these
 admin.site.register(Category)
 admin.site.register(Location)
+admin.site.register(Alert)

whats-open/api/models.py

@@ -289,3 +289,51 @@ class OpenTime(TimeStampedModel):
                                    # to
                                    weekdays[self.end_day],
                                    self.end_time.strftime("%H:%M:%S"))
+
+class Alert(TimeStampedModel):
+    """
+    Some type of notification that is displayed to clients that conveys a
+    message. Past examples include: random closings, modified schedules being
+    in effect, election reminder, advertising for other SRCT projects.
+
+    Alerts last for a period of time until the information is no longer dank.
+
+    alert: {
+        urgency_tag: [info, slight, major, emergency],
+        message: String(),
+        startDate: Date(),
+        endDate: Date()
+    }
+    """
+    # Define string constants to represent urgency tag levels
+    INFO = 'info'
+    SLIGHT = 'slight'
+    MAJOR = 'major'
+    EMERGENCY = 'emergency'
+
+    # Tuple that ties a urgency tag with an integer representation
+    URGENCY_CHOICES = (
+        (INFO, 'Info'),
+        (SLIGHT, 'Slight'),
+        (MAJOR, 'Major'),
+        (EMERGENCY, 'Emergency'),
+    )
+
+    # The urgency tag for this Alert
+    urgency_tag = models.CharField(max_length=10, default='Info',
+                                   choices=URGENCY_CHOICES)
+
+    # The text that is displayed that describes the Alert
+    message = models.CharField(max_length=140)
+
+    # The date + time that the alert will be start being served
+    start_datetime = models.DateTimeField()
+
+    # The date + time that the alert will stop being served
+    end_datetime = models.DateTimeField()
+
+    def __str__(self):
+        """
+        String representation of an Alert object.
+        """
+        return "%s | %s" % (self.message, self.urgency_tag)

whats-open/api/serializers.py

@@ -8,11 +8,18 @@ from __future__ import (absolute_import, division, print_function,
                         unicode_literals)
 
 # App Imports
-from .models import Category, Facility, Schedule, OpenTime, Location
+from .models import Category, Facility, Schedule, OpenTime, Location, Alert
 
 # Other Imports
 from rest_framework import serializers
 
+class AlertSerializer(serializers.ModelSerializer):
+    """
+    """
+    class Meta:
+        model = Alert
+        fields = '__all__'
+
 class OpenTimeSerializer(serializers.ModelSerializer):
     """
     """