# User Search Filters Enhancement

## Overview
This document describes the implementation of enhanced search filters for the user management page. Class and session filters have been added to allow administrators to easily find students based on their class and academic session.

## Changes Made

### 1. Data Retrieval
- Added queries to fetch active classes and academic sessions for dropdown population
- Classes are ordered by name and section
- Sessions are ordered by name in descending order

### 2. Search Filter UI
- Added "ক্লাস" (Class) dropdown filter
- Added "সেশন" (Session) dropdown filter
- Updated form layout to accommodate new filters
- Maintained responsive design for all screen sizes

### 3. Search Logic Enhancement
- Implemented backend logic to filter users by class ID
- Implemented backend logic to filter users by session name
- Added proper parameter binding for security
- Ensured filters work correctly with existing search criteria

### 4. Query Updates
- Modified user count query to include class and session filters
- Updated user retrieval query to handle new filter conditions
- Enhanced statistics query to work with new filters
- Updated pagination logic to maintain filter state

## Implementation Details

### Form Structure
The search form now includes:
1. Text search field (existing)
2. Role filter dropdown (existing)
3. Class filter dropdown (new)
4. Session filter dropdown (new)
5. Status filter dropdown (existing)
6. Per page selection (existing)
7. Search button (existing)

### Backend Logic
- Class filter uses `s.class_id = ?` condition
- Session filter uses `s.session = ?` condition
- When class or session filters are applied, the query automatically restricts results to student users
- All filters work in combination with each other

### URL Parameters
New query parameters:
- `class_filter` - Class ID for filtering
- `session_filter` - Session name for filtering

## Benefits
1. **Precise Filtering**: Administrators can quickly find students from specific classes or sessions
2. **Combination Search**: All filters work together for complex searches
3. **User-Friendly**: Dropdowns populated with actual data from the database
4. **Maintained State**: Filter selections persist during pagination

## Testing
The implementation has been tested to ensure:
1. Class and session dropdowns populate correctly with database data
2. Filters work individually and in combination
3. Pagination maintains filter state
4. Performance is acceptable with large datasets
5. No impact on existing functionality

## Future Considerations
- Add group filter for students
- Implement date range filtering
- Add export functionality for filtered results
- Include filter counts for better UX