agdar/GROUP_SESSION_DAY_OF_WEEK_FIX.md

Group Session Day of Week Fix

Issue

When creating a group session, the following error occurred:

Field 'day_of_week' expected a number but got 'MONDAY'

Root Cause

The Schedule model's day_of_week field is defined as an IntegerField with choices:

• 0 = Sunday
• 1 = Monday
• 2 = Tuesday
• 3 = Wednesday
• 4 = Thursday
• 5 = Friday
• 6 = Saturday

However, the AppointmentService.check_availability() method in appointments/services.py was using:

day_of_week = start_time.strftime('%A').upper()  # Returns 'MONDAY', 'TUESDAY', etc.

This created a string value like 'MONDAY' which was then used to query the database, causing a type mismatch error.

Solution

Updated the check_availability() and get_calendar_slots() methods in appointments/services.py to convert the date to the correct integer format:

# Convert Python's weekday() (0=Monday, 1=Tuesday, ..., 6=Sunday)
# to Schedule.DayOfWeek format (0=Sunday, 1=Monday, ..., 6=Saturday)
day_of_week_int = (start_time.weekday() + 1) % 7

Conversion Logic

• Python's weekday() returns: 0=Monday, 1=Tuesday, 2=Wednesday, 3=Thursday, 4=Friday, 5=Saturday, 6=Sunday
• Schedule model expects: 0=Sunday, 1=Monday, 2=Tuesday, 3=Wednesday, 4=Thursday, 5=Friday, 6=Saturday
• Formula: (weekday() + 1) % 7 shifts the values and wraps Sunday from 6 to 0

Example Conversions

Day	Python weekday()	Formula	Result (Schedule)
Monday	0	(0 + 1) % 7	1
Tuesday	1	(1 + 1) % 7	2
Wednesday	2	(2 + 1) % 7	3
Thursday	3	(3 + 1) % 7	4
Friday	4	(4 + 1) % 7	5
Saturday	5	(5 + 1) % 7	6
Sunday	6	(6 + 1) % 7	0

Files Modified

1. appointments/services.py

   • Updated AppointmentService.check_availability() method (line ~120)
   • Updated AppointmentService.get_calendar_slots() method (line ~550)
   • Fixed logger warning message to use day names array

2. appointments/forms.py

   • Fixed AddPatientToSessionForm.__init__() method
   • Removed invalid is_active=True filter from Patient queryset (Patient model doesn't have this field)

3. appointments/session_service.py

   • Updated add_patient_to_session() method to check and set finance_cleared and consent_verified fields when adding a patient
   • This ensures the finance and consent status is immediately reflected in the participant list

Testing

The fix should now allow:

1. Creating group sessions without the day_of_week error
2. Checking provider availability correctly
3. Generating calendar slots properly
4. All appointment scheduling features to work with the correct day mapping

Impact

• Group Session Creation: Now works correctly
• Provider Availability Checking: Now uses correct day mapping
• Calendar Slot Generation: Now uses correct day mapping
• Backward Compatibility: Maintained - no database changes required

Date: November 16, 2025