🔍 Code Extractor

Registers a DocChat Flask blueprint with a Flask application instance, handling path configuration and error logging.

Purpose

This function serves as a registration utility for integrating the DocChat blueprint into a Flask application. It dynamically adds the docchat directory to the Python path if needed, imports the blueprint, registers it with the Flask app, and provides detailed logging about the registration process. It's designed to be called during Flask application initialization to enable DocChat functionality at the /docchat route.

Source Code

def register_docchat(app):
    """
    Register DocChat blueprint with Flask app.
    
    Args:
        app: Flask application instance
        
    Returns:
        Blueprint instance (or None if registration failed)
    """
    try:
        # Add docchat directory to Python path if not already there
        docchat_dir = Path(__file__).parent
        if str(docchat_dir) not in sys.path:
            sys.path.insert(0, str(docchat_dir))
        
        # Import blueprint
        from .blueprint import docchat_bp
        
        # Register blueprint
        app.register_blueprint(docchat_bp)
        
        logger.info("✅ DocChat blueprint registered at /docchat")
        logger.info(f"   DocChat directory: {docchat_dir}")
        logger.info(f"   Static files: {docchat_bp.static_folder}")
        logger.info(f"   Templates: {docchat_bp.template_folder}")
        
        return docchat_bp
        
    except ImportError as e:
        logger.error(f"❌ Failed to import DocChat blueprint: {e}")
        logger.error("   Make sure docchat is in the Python path")
        return None
        
    except Exception as e:
        logger.error(f"❌ Failed to register DocChat blueprint: {e}")
        logger.exception("Full error:")
        return None

Parameters

Parameter Details

app: A Flask application instance (flask.Flask object) to which the DocChat blueprint will be registered. This should be an initialized Flask app object that can accept blueprint registrations via the register_blueprint() method.

Return Value

Returns the registered Blueprint instance (docchat_bp) if registration succeeds, or None if registration fails due to ImportError or any other exception. The Blueprint object can be used for further configuration or inspection after registration.

Dependencies

• flask
• pathlib
• sys
• logging
• os

Required Imports

import os
import sys
import logging
from pathlib import Path

Conditional/Optional Imports

These imports are only needed under specific conditions:

from .blueprint import docchat_bp

from . import config as docchat_config

Usage Example

from flask import Flask
import logging
from register_docchat import register_docchat

# Setup logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

# Create Flask app
app = Flask(__name__)

# Register DocChat blueprint
docchat_blueprint = register_docchat(app)

if docchat_blueprint:
    print('DocChat registered successfully')
    # Run the app
    app.run(debug=True)
else:
    print('Failed to register DocChat')

Best Practices

• Ensure the logger is properly configured before calling this function to capture registration logs
• Call this function during Flask application initialization, before app.run()
• Check the return value to verify successful registration before proceeding with app startup
• Ensure the blueprint.py file exists in the same directory and properly defines docchat_bp
• The function modifies sys.path, which affects the entire Python process - be aware of potential side effects in complex applications
• Handle the None return value appropriately in production code to prevent application startup with missing functionality
• The function uses relative imports (.blueprint), so it must be part of a proper Python package structure

Tags

Similar Components

AI-powered semantic similarity - components with related functionality:

• function integrate_docchat 72.4% similar

  One-line integration function that configures and registers the DocChat component into a Flask application, handling dependency checking, configuration, and blueprint registration.

  From: /tf/active/vicechatdev/docchat/integration.py

• function get_integration_status 69.3% similar

  Retrieves the integration status of the DocChat blueprint within a Flask application, including registration status, configuration details, and dependency checks.

  From: /tf/active/vicechatdev/docchat/integration.py

• function on_load 65.8% similar

  Blueprint initialization hook that loads persisted chat sessions from disk when the DocChat blueprint is registered with the Flask application.

  From: /tf/active/vicechatdev/docchat/blueprint.py

• function configure_docchat 64.9% similar

  Configures DocChat module settings by overriding default configuration values from a Flask application instance and optional keyword arguments.

  From: /tf/active/vicechatdev/docchat/integration.py

• function check_dependencies 59.0% similar

  Validates the installation status of all required Python packages for the DocChat application by attempting to import each dependency and logging the results.

  From: /tf/active/vicechatdev/docchat/integration.py