Medicine Save Behavior Change:
- Previously: Medicines added to table locally, saved on 'Save Discharge Advice' click
- Now: AJAX auto-save immediately when '+ADD / Update' button is clicked
- Matches OPD Consult Form workflow (instant save on add)
Implementation:
- Modified btn_discharge_med_add click handler to make AJAX POST
- POST parameters: action='add_drug', ajax_mode='json', new_drug_name, new_drug_type,
new_drug_dose, new_drug_when, new_drug_freq, new_drug_day, new_drug_qty, new_drug_remark
- Controller add_drug action already existed - now returns JSON when ajax_mode='json'
- On success: adds row to table, clears form, shows 'Medicine saved successfully'
- On failure: shows error message from server
- CSRF token updated after each AJAX call
Remove Button Behavior:
- Remove button now shows confirmation dialog
- Warns user: 'This will only remove from current view. Reload to see saved medicines.'
- Note: Remove action is NOT yet AJAX - full page reload shows actual DB state
- Future enhancement: make Remove button also AJAX (action='remove_drug')
Technical Notes:
- Kept discharge_medicine_json serialization as backup (unused now, but harmless)
- Medicine data: med_id=0 marks client-added medicines
- Success check: data.update === 1
- Error handling: network timeout 30s, shows xhr.status on fail
- Form fields cleared after successful save
- Focus returns to medicine name field for next entry
User Benefits:
- Instant feedback - no need to scroll down and click 'Save Discharge Advice'
- Medicines immediately persisted to database
- Can add multiple medicines in quick succession
- Consistent with OPD prescription workflow
- Reduced risk of data loss (saves immediately vs. waiting for form submit)