remove reminder field and make it as property

hypha/apply/funds/forms.py

@@ -432,4 +432,4 @@ class CreateReminderForm(forms.ModelForm):
 
     class Meta:
         model = Reminder
-        fields = ['time', 'action', 'medium']
+        fields = ['time', 'action']

hypha/apply/funds/migrations/0073_reminder.py

-# Generated by Django 2.2.11 on 2020-03-19 12:31
+# Generated by Django 2.2.11 on 2020-03-19 17:28
 
 from django.conf import settings
 from django.db import migrations, models
@@ -19,7 +19,6 @@ class Migration(migrations.Migration):
                 ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                 ('time', models.DateTimeField()),
                 ('action', models.CharField(choices=[('reviewers_review', 'Remind reviewers to Review')], default='reviewers_review', max_length=50)),
-                ('medium', models.CharField(choices=[('email', 'Email')], default='email', max_length=15)),
                 ('sent', models.BooleanField(default=False)),
                 ('submission', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='reminders', to='funds.ApplicationSubmission')),
                 ('user', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to=settings.AUTH_USER_MODEL)),

hypha/apply/funds/models/reminders.py

@@ -11,8 +11,8 @@ class Reminder(models.Model):
         REVIEW: 'Remind reviewers to Review',
     }
     EMAIL = 'email'
-    MEDIUM_TYPES = {
-        EMAIL: 'Email',
+    MEDIUM = {
+        REVIEW: EMAIL
     }
     ACTION_MESSAGE = {
         f'{REVIEW}-{EMAIL}': MESSAGES.REVIEW_REMINDER,
@@ -32,11 +32,6 @@ class Reminder(models.Model):
         default=REVIEW,
         max_length=50,
     )
-    medium = models.CharField(
-        choices=MEDIUM_TYPES.items(),
-        default=EMAIL,
-        max_length=15,
-    )
     sent = models.BooleanField(default=False)
 
     def __str__(self):
@@ -52,3 +47,8 @@ class Reminder(models.Model):
     @property
     def action_message(self):
         return self.ACTION_MESSAGE[f'{self.action}-{self.medium}']
+
+    @property
+    def medium(self):
+        return self.MEDIUM[self.action]
+    
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