# Signing Edit Prevention Implementation Plan

## Overview
Implement edit prevention after signing for all clinical documents across all apps.

## Apps with Signing Functionality
1. **ABA** - ABASession, ABAConsult (2 models)
2. **OT** - OTSession, OTConsult (2 models)
3. **SLP** - SLPConsult, SLPAssessment, SLPIntervention, SLPProgressReport (4 models)
4. **Medical** - MedicalConsultation, MedicalFollowUp (2 models)
5. **Nursing** - NursingEncounter (1 model)

**Total: 11 models**

## Implementation Strategy

### 1. Create Mixin for Edit Prevention
Create `SignedDocumentEditPreventionMixin` in `core/mixins.py` that:
- Checks if document is signed in `dispatch()` method
- Prevents access to update views for signed documents
- Shows appropriate error message
- Redirects to detail view

### 2. Update All UpdateView Classes
Add the mixin to all 11 update views:
- `ABASessionUpdateView`
- `ABAConsultUpdateView`
- `OTSessionUpdateView`
- `OTConsultUpdateView`
- `SLPConsultUpdateView`
- `SLPAssessmentUpdateView`
- `SLPInterventionUpdateView`
- `SLPProgressReportUpdateView`
- `MedicalConsultationUpdateView`
- `MedicalFollowUpUpdateView`
- `NursingEncounterUpdateView`

### 3. Update Confirmation Messages
Update all sign view confirmation messages to include:
"Are you sure you want to sign this document? Once signed, no further editing will be allowed. This action cannot be undone."

### 4. Update Templates
Update detail templates to:
- Hide "Edit" button if document is signed
- Show "Signed - No Editing Allowed" message

## Files to Modify

### Python Files (12 files)
1. `core/mixins.py` - Add new mixin
2. `aba/views.py` - Update 2 views
3. `ot/views.py` - Update 2 views
4. `slp/views.py` - Update 4 views
5. `medical/views.py` - Update 2 views
6. `nursing/views.py` - Update 1 view

### Template Files (11 files)
1. `aba/templates/aba/session_detail.html`
2. `aba/templates/aba/consult_detail.html`
3. `ot/templates/ot/session_detail.html`
4. `ot/templates/ot/consult_detail.html`
5. `slp/templates/slp/consultation_detail.html`
6. `slp/templates/slp/assessment_detail.html`
7. `slp/templates/slp/intervention_detail.html`
8. `slp/templates/slp/progress_detail.html`
9. `medical/templates/medical/consultation_detail.html`
10. `medical/templates/medical/followup_detail.html`
11. `nursing/templates/nursing/encounter_detail.html`

## Implementation Steps
1. ✅ Create mixin in core/mixins.py
2. ✅ Update all UpdateView classes
3. ✅ Update all sign view confirmation messages
4. ✅ Update all detail templates
5. ✅ Test implementation