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Flask API endpoint that deletes a data section after verifying ownership by the authenticated user.

Purpose

This function serves as a REST API endpoint to delete a data section from the system. It authenticates the user, verifies they own the data section being deleted, and then removes it from the database. It includes error handling for unauthorized access, missing sections, and deletion failures.

Source Code

def delete_data_section(section_id):
    """Delete a data section"""
    user_email = get_current_user()
    
    # Verify ownership
    data_section = data_section_service.get_data_section(section_id)
    if not data_section or data_section.owner != user_email:
        return jsonify({'error': 'Data section not found or access denied'}), 404
    
    try:
        # Delete the data section
        success = data_section_service.delete_data_section(section_id)
        
        if success:
            return jsonify({
                'success': True,
                'message': 'Data section deleted successfully'
            })
        else:
            return jsonify({'error': 'Failed to delete data section'}), 500
            
    except Exception as e:
        logger.error(f"Error deleting data section: {e}")
        return jsonify({'error': str(e)}), 500

Parameters

Parameter Details

section_id: String identifier (likely UUID) of the data section to be deleted. This is extracted from the URL path parameter in the route '/api/data-sections/<section_id>'. Must correspond to an existing data section in the database.

Return Value

Returns a Flask JSON response tuple. On success: (jsonify({'success': True, 'message': 'Data section deleted successfully'}), 200). On not found/unauthorized: (jsonify({'error': 'Data section not found or access denied'}), 404). On failure: (jsonify({'error': 'Failed to delete data section'}), 500) or (jsonify({'error': str(e)}), 500) for exceptions.

Dependencies

• flask
• logging

Required Imports

from flask import jsonify
import logging

Usage Example

# Example API call to delete a data section
# Assuming Flask app is running and user is authenticated

import requests

# User must be authenticated with valid session/token
session = requests.Session()
# ... perform authentication ...

section_id = 'abc123-def456-ghi789'
response = session.delete(
    f'http://localhost:5000/api/data-sections/{section_id}',
    headers={'Authorization': 'Bearer <token>'}
)

if response.status_code == 200:
    result = response.json()
    print(result['message'])  # 'Data section deleted successfully'
elif response.status_code == 404:
    print('Section not found or access denied')
else:
    print(f'Error: {response.json()["error"]}')

Best Practices

• Always verify ownership before allowing deletion to prevent unauthorized access
• Use proper HTTP status codes (404 for not found, 500 for server errors)
• Log errors for debugging and monitoring purposes
• Return consistent JSON response structure for both success and error cases
• Implement proper authentication and authorization checks before any destructive operations
• Consider implementing soft deletes instead of hard deletes for data recovery
• Add rate limiting to prevent abuse of delete endpoints
• Consider adding audit logging to track who deleted what and when
• Ensure cascading deletes are handled properly if data sections have related records

Tags

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